UCD9240 Digital Point Load System Controller FEATURES Controls po

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

UCD9240 Digital Point Load System Controller FEATURES Controls po

Datasheet Thumbnail

Top Searches for this datasheet

UCD9240
UCD9240 Digital Point Load System Controller
FEATURES Controls power stages voltage feedback control loops. Supports PMBus version 1.1. Flexible configuration, device control: Four single dual power stages, 4-phase power stages, 2,4,6, 8-phase power stage. Supports switching frequencies 2MHz. Supports conversion ratio 2MHz with psec duty-cycle resolution. +/-1mV feed-back resolution. Hardware accelerated digital 3-pole/3-zero compensator. Internal regulator drives external pass element, giving wide supply voltage range. 12-bit digital monitoring power supply parameters, including: Vin, Vout, each rail, Iout, each power stage (phase), External Temperature, each stage. Multiple levels current fault protection: External current fault inputs, Fast analog comparators monitor current sense voltage, Digital current sense monitor average current. Eight Synchronous Rectifier Enable (SRE) outputs. Able synchronize clocks between multiple UCD9240 devices. Enhanced non-volatile memory with Programmable soft start soft stop ramps under closed loop control. Supports multiple soft-start soft-stop configuration including pre-bias start-up. Supports voltage tracking. Supports current sharing multi-phase power stages. Supports phase shedding multi-phase power stages based average current. Programmable control outputs. Programmable margining sequencing. Power+ Designer, full featured based design tool simulate, configure, monitor power supply performance.
APPLICATIONS
Industrial Networking Equipment Servers Storage Systems Telecommunications Equipment
DESCRIPTION UCD9240 digital synchronous buck controller that control power stages multi-phase configuration feedback outputs with phases output. This device provides enhanced configurability control point load (POL) applications. device configured PMBus with Power+ Designer GUI. switching frequency, output configuration feedback compensation programmed through Power+ Designer. This allows UCD9240 support multiple converter arrangements meet dynamic converter performance broad range applications. Each high speed digital control loop dedicated 3-pole/3-zero compensator 250ps PWMs. This architecture enables wide input output voltage conversion ratio's switching frequency 2MHz. Additionally, UCD9240 able monitor manage power supply operating conditions report status host system through PMBus. management parameters configurable through Power+ Designer. design tool allows power supply designer easily configure control loop characteristics generate expected performance displaying Bode plots each controlled power stage. multi-phase power stage outputs, UCD9240 incorporates current balancing. average current each phase monitored duty cycle each phase adjusted balance average current. addition, UCD9240 supports "shedding" more phases (ganged power stages) commanded through PMBus average current demand. When phase dropped added UCD9240 automatically adjusts phase each output minimize output ripple well needed change loop compensation.
PRODUCT PREVIEW information concerns products formative design phase development. Characteristic data other specifications design goals. Texas Instruments reserves right change discontinue these products without notice.
WWW.TI.COM
Copyright 2007, Texas Instruments Incorporated
UCD9240 Digital Point Load System Controller
FUNCTIONAL BLOCK DIAGRAM
Fusion Power Peripherals
EAP4 EAP4 EAN4 EAN4
Error
Compensator 3P/3Z
Digital High
DPWMDPWM-4A DPWMDPWM-4B
FAULTFAULT-4A FAULTFAULT-4B
EAP3 EAP3 EAN3 EAN3
Error
Compensator 3P/3Z
Digital High
DPWMDPWM-3A DPWMDPWM-3B FAULTFAULT-3A
FAULTFAULT-3B
EAP2 EAP2 EAN2 EAN2
Error
Compensator 3P/3Z
Digital High
DPWMDPWM-2A DPWMDPWM-2B
FAULTFAULT-2A FAULTFAULT-2B
Error
EAP1 EAP1 EAN1 EAN1
Compensator
Diff
3P/3Z
Coeff. Coeff. Regs
Digital High
DPWMDPWM-1A DPWMDPWM-1B FAULTFAULT-1A
FAULT-1B FAULT-
SYNC-IN SYNCSYNC -OUT
BPCAP
ADDRADDR-00 ADDRADDR-01 CSCS-1A CSCS-1B CS2A CSCS-2B CSCS-3A CSCS-3B CSCS-4A CSCS-4B Vtrack Temperature
Analog Comparators
TRIP1
ksps
ARMARM-7 core
Flash memory with
control
TRIP2
SRESRE-4B SRESRE-4A SRESRE-3B SRESRE-3A SRESRE-2B SRESRE-2A SRESRE-1B SRESRE-1A
TRIP3
Vreg
TRIP4
PMBus
PMBusPMBus-Clk PMBusPMBus-Data PMBusPMBus-Alert PMBusPMBus-Cntl
ADCREFIN
POR/BOR
www.ti.com
UCD9240 Digital Point Load System Controller
64-PIN 80-PIN ASSIGNMENTS
UCD9240-64pin
EAp1 EAn1 EAp2 EAn2 EAp3 EAn3 EAp4 EAn4 AddrSens0 AddrSens1 CS-1A (COMP1) CS-2A (COMP2) CS-3A (COMP3) CS-4A (COMP4) CS-1B CS-2B Vtrack Temp DPWM-1A DPWM-1B DPWM-2A DPWM-2B DPWM-3A DPWM-4A FAULT-1A FAULT-1B FAULT-2A FAULT-2B FAULT-3A FAULT-4A SRE-1A SRE-1B SRE-2A SRE-2B SRE-3A SRE-4A
EAp1 EAn1 EAp2 EAn2 EAp3 EAn3 EAp4 EAn4 AddrSen0 AddrSen1 CS-1A (COMP1) CS-2A (COMP2) CS-3A (COMP3) CS-4A (COMP4) CS-1B CS-2B CS-3B CS-4B Vtrack Temp ADCref
UCD9240-80pin
DPWM-1A DPWM-1B DPWM-2A DPWM-2B DPWM-3A DPWM-3B DPWM-4A DPWM-4B FAULT-1A FAULT-1B FAULT-2A FAULT-2B FAULT-3A FAULT-3B FAULT-4A FAULT-4B SRE-1A SRE-1B SRE-2A SRE-2B SRE-3A SRE-3B SRE-4A SRE-4B
TMUX-0 TMUX-1 PMBus-Clk TMUX-2 PMBus-Data FAN-PWM PMBus-Alert (TCLK) FAN-TACH PMBus-Ctrl PowerGood (TMS) (TDI) SYNC-IN (TDO) SYNC-OUT -RESET -TRST
TMUX-1 TMUX-2 TMUX-3 PMBus-Clk PMBus-Data PMBus-Alert PMBus-Ctrl PowerGood
SYNC-IN SYNC-OUT FAN-PWM FAN-TACH Diag
-TRST
-RESET
UCD9240 available plastic 64-pin package (RGC) 80-pin TQFP package (PFC).
www.ti.com
UCD9240 Digital Point Load System Controller
TYPICAL APPLICATION SCHEMATIC
diagram above shows UCD9240 Power Supply Controller working system which requires regulation four independent power supplies. loop each power supply created respective voltage outputs feeding into Error differential inputs, completed DPWM outputs feeding into UCD7230 drivers which PTD08A0x0 modules above diagram.
www.ti.com
UCD9240 Digital Point Load System Controller
DESCRIPTIONS
64-Pin Package signal
EAp1 EAn1 EAp2 EAn2 EAp3 EAn3 EAp4 EAn4
80-Pin Package signal
EAp1 EAn1 EAp2 EAn2 EAp3 EAn3 EAp4 EAn4
Description
Error Analog, differential voltage, Positive channel input. Error Analog, differential voltage, Negative channel input. Error Analog, differential voltage, Positive channel input. Error Analog, differential voltage, Negative channel input. Error Analog, differential voltage, Positive channel input. Error Analog, differential voltage, Negative channel input. Error Analog, differential voltage, Positive channel input. Error Analog, differential voltage, Negative channel input.
AddrSens0 AddrSens1 CS-1A CS-2A CS-3A CS-4A CS-1B CS-2B Vtrack Temp
AddrSens0 AddrSens1 CS-1A CS-2A CS-3A CS-4A CS-1B CS-2B Vtrack Temp CS-3B CS-4B
ADCref
PMBus address sense. Least significant address bits PMBus address sense. Most significant address bits. Power stage current sense input, Analog comparator Power stage current sense input, Analog comparator Power stage current sense input, Analog comparator Power stage current sense input, Analog comparator Power stage current sense input. Power stage current sense input. sense input. Voltage Tracking Temperature sense input Power stage current sense input. Power stage current sense input. analog input analog input Decoupling Ground reference.
dPWM-1A dPWM-1B dPWM-2A dPWM-2B dPWM-3A
dPWM-4A
dPWM-1A dPWM-1B dPWM-2A dPWM-2B dPWM-3A dPWM-3B dPWM-4A dPWM-4B
DPWM output. DPWM output. DPWM output. DPWM output. DPWM output. DPWM output. DPWM output. DPWM output.
FAULT-1A FAULT-1B FAULT-2A FAULT-2B FAULT-3A
FAULT-4A
FAULT-1A FAULT-1B FAULT-2A FAULT-2B FAULT-3A FAULT-3B FAULT-4A FAULT-4B
External Fault input External Fault input External Fault input External Fault input External Fault input External Fault input External Fault input External Fault input
SRE-1A SRE-1B SRE-2A SRE-2B SRE-3A
SRE-4A
SRE-1A SRE-1B SRE-2A SRE-2B SRE-3A SRE-3B SRE-4A SRE-4B diag
Synchronous Rectifier Enable Synchronous Rectifier Enable Synchronous Rectifier Enable Synchronous Rectifier Enable Synchronous Rectifier Enable Synchronous Rectifier Enable Synchronous Rectifier Enable Synchronous Rectifier Enable Diagnostic
TMUX-0 TMUX-1 TMUX-2
TMUX-0 TMUX-1 TMUX-2
Temperature multiplexer select Temperature multiplexer select Temperature multiplexer select
www.ti.com
UCD9240 Digital Point Load System Controller
FAN-PWM FAN-PWM PowerGood FAN-Tach control output. Power Good signal tachometer input
FAN-Tach Sync_Out Sync_In PowerGood
Sync_Out Sync_In
Sync output from DPWM Sync input DPWM connect DVss. connect DVss. connect DVss. connect DVss
nRESET PMBus_Clk PMBus_Data PMBus_Alert PMBus_Cntrl
nRESET PMBus_Clk PMBus_Data PMBus_Alert PMBus_Cntrl
Active device reset input. PMBus (Must have pull-up 3.3V) PMBus Data (Must have pull-up 3.3V) PMBUS Alert PMBUS Cntl
V33FB V33A V33D V33DIO V33DIO BPCap
V33FB V33A V33D V33DIO V33DIO BPCap
3.3V linear regulator Feedback connection. Analog supply Digital Core 3.3V supply Digital 3.3V supply. Digital 3.3V supply. 1.8V Bypass Capacitor Connection.
AVss AVss AVss DVss DVss DVss
AVss AVss AVss DVss DVss DVss
Analog Ground. Analog Ground. Analog Ground. Digital Ground. Digital Ground. Digital Ground.
www.ti.com
UCD9240 Digital Point Load System Controller
ELECTRICAL SPECIFIACTIONS Recommended operating conditions
SYMBOL PARAMETER
UNIT
V33D,V33DIO,V33A
Supply voltage during operation
Operating free-air temperature range
Absolute Maximum Ratings1
Voltage applied V33D DVss Voltage applied V33A AVss Voltage applied (see NOTE) Storage temperature, TSTG -0.3 -0.3 -0.3 V33D -40C 150C
Electrical Characteristics
Supply Current
SYMBOL PARAMETER TEST CONDITION UNIT
I33a
Supply current
V33A 3.3V
I33dio
Supply current
V33DIO 3.3V
I33d
Supply current
V33D 3.3V
I33d
Supply current
V33D 3.3V storing configuration parameters flash memory
Regulator Inputs/Outputs
SYMBOL PARAMETER TEST CONDITION UNIT
Vreg BPCap
Bypass Capacitor Voltage
3.3V Linear Regulator
3.25
3.35
V33FB
3.3V linear Feedback
I33FB
Series pass base drive
Beta
Series pass device
Bias Supply Generator
supply voltages, required. internal series pass regulator generates from supply. requires bypass capacitor from BPCap ground. either supplied from external source, generated from with regulation circuitry built into UCD9240 that drives external series pass transistor. Transistor beta must least typical application circuit shows base
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only functional operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability. NOTE: voltages referenced VSS.
www.ti.com
UCD9240 Digital Point Load System Controller
external connected pull resistor VD33FB pin. emitter becomes supply chip should bypassed ground with Analog Inputs/Outputs
PARAMETER TEST CONDITIONS UNIT
EAPn, EANn
Vsense Differential Voltage Range
Maximum Vsense excursion
-0.3
EAP-EAN
Small Signal Error voltage resolution
during start/stop ramp during mode
Error Voltage Accuracy
"DAC commanded
1.01
Input impedance
ground reference
Input capacitance
differential
IBIAS
Bias current PMBus Addr pins
VADDR
PMBus Address programming bins
Table
0.141
2.50
VRANGE: CSxx
voltage range current sense input
VRANGE: Vin, Vtrack, Vtemp
input voltage range
VOVERCURRENT: CS1-A, CS2-A, CS3-A, CS4-A
Analog Overcurrent Threshold
Current Sense Input capacitance
ADCRefIn
External Reference (80-pin package)
(Not currently supported Firmware!)
V33A
Timing
PARAMETER TEST CONDITIONS UNIT
Tretention
Retention configuration parameters
Years
t(reset)
Pulse length needed Reset
Fault Detection Latency
t(FAULT)
time disable output
High level FAULT
t(CLF)
time disable output
Step change voltage from 1.0V 2.5V
t(OC)
time disable output overcurrrent detection average
Step change voltage from PMBus programmed over-current threshold 150% threshold
production tested. Limits verified design.
www.ti.com
UCD9240 Digital Point Load System Controller
www.ti.com
UCD9240 Digital Point Load System Controller
Digital Inputs/Outputs
PARAMETER TEST CONDITIONS
UNIT
Low-level output voltage
IOH= mA3, V33DIO
Dgnd 0.25
High-level output voltage
mA4, V33DIO
V33dio
High-level input voltage
V33DIO
Low-level input voltage
V33DIO
PMBus/SMBus/I2C timing characteristics timing diagram communications interface that supports SMBus PMBus shown below. Table C/SMBus/PMBus Timing Characteristics -40°C 85°C, 3.0V 3.6V; Typical values 25°C 2.5V (Unless otherwise noted)
PARAMETER TEST CONDITIONS UNIT
FSMB
SMBus/PMBus operating frequency
Slave mode, SMBC duty cycle
FI2C
operating frequency
Slave mode, duty cycle
FMAS
SMBus master clock frequency
Master mode, clock slave extend
51.2
t(BUF)
free time between start stop
t(HD:STA)
Hold time after (repeated) start
t(SU:STA)
Repeated start setup time
t(SU:STO)
Stop setup time
t(HD:DAT)
Data hold time
Receive Mode
Transmit Mode
t(SU:DAT)
Data setup time
t(TIMEOUT)
Error signal/detect
below
t(LOW)
Clock period
t(HIGH)
Clock high period
below
t(LOW:SEXT) Cumulative clock slave extend time
below
t(LOW:MEXT) Cumulative clock master extend time
below
Clock/data fall time
below
Clock/data rise time
(10) below
1000
maximum total current, IOHmax IOLmax, outputs combined, should exceed +/-12 hold maximum voltage drop specified.
maximum total current, IOHmax IOLmax, outputs combined, should exceed +/-48 hold maximum voltage drop specified. UCD9110 times when clock exceeds t(TIMEOUT). t(HIGH), Max, minimum idle time. SMBC SMBD causes reset transaction involving UCD9110 that progress. This specification valid when NC_SMB control remains default cleared state (CLK[0]=0). t(LOW:SEXT) cumulative time slave device allowed extend clock cycles message from initial start stop. t(LOW:MEXT) cumulative time master device allowed extend clock cycles message from initial start stop. Rise time VILMAX 0.15) (VIHMIN 0.15) Fall time 0.9VDD (VILMAX 0.15)
www.ti.com
UCD9240 Digital Point Load System Controller
coefficients filter sections generated thru modeling power stage load Power+ Designer. Several banks filter coefficients downloaded device which automatically switch them based operation power stage.
Figure I2C/SMBus/PMBus Timing Diagram
www.ti.com
UCD9240 Digital Point Load System Controller
FUNCTION OVERVIEW
UCD9240 contains four Fusion Power Peripherals (FPP). Each configured drive from eight power stages. Each consists differential feedback input, circuits used output regulation voltage, error measurement circuits, digital hardware accelerated 3-pole/3-zero compensator digital engine. Each controller configured through PMBus serial interface.
PMBus Interface
PMBus serial interface specifically designed support power management. based SMBus interface, which built physical specification. UCD9240 supports interface through dedicated hardware firmware ARM-7 digital supervisory processor. UCD9240 supports revision PMBus standard. Wherever possible, standard PMBus commands used support function device. unique features UCD9240, MFR_SPECIFIC commands defined configure activate those features. firmware UCD9240 PMBus compliant, accordance with "Compliance" section PMBus specification. firmware also compliant with SMBus specification, including support SMBus ALERT function. hardware support either signaling, though present firmware defaults kHz.
PMBus Address Decode ADC12 Reading
pins allocated decode PMBus address. power-up device applies IBIAS each address detect voltage that captured internal 12-bit ADC. PMBus address calculated follows. PMBus Address 12*bin(VAD01) bin(VAD00) Where bin(VAD0x) address address shown
www.ti.com
UCD9240 Digital Point Load System Controller
Table
AddrSens0, AddrSens1
IBIAS
On/Off Control
Resistor PMBus Address
Figure PMBus Address Detection Method
www.ti.com
UCD9240 Digital Point Load System Controller
Table PMBus Address bins
Address
Voltage 2.299 1.815 1.463 1.177 0.953 0.749 0.604 0.486 0.383 0.308 0.249 0.196 0.157
Resistor 86.6 68.1 54.9 44.2 34.8 28.0 22.6 17.8 14.3
impedance (short) address produces voltage below minimum voltage will cause PMBus address default address 0x0B. high impedance (open) address that produces voltage above maximum voltage will also cause PMBus address default address 0x0B.
Figure PMBus Voltage Adjustment Methods Output Voltage Adjustment Output Voltage programmed issuing VOUT_COMMAND, VOUT_TRIM VOUT_MARGIN, commands PMBus. Soft-Start, Soft-Stop Normal Operation During soft-start soft-stop internal gain changed have +-8mV resolution This allows have wider dynamic range during start/stop ramp. During normal operation gain adjusted +-1mv resolution tighter regulation.
www.ti.com
UCD9240 Digital Point Load System Controller
Digital Compensator
Each voltage rail controller UCD9240 includes digital compensator. compensator digital filter consisting second order infinite impulse response (IIR) filter section cascaded with first order filter section. based design tool program: development tool UCD9240 comes with "POWER+DESIGNER", which used assist defining compensator coefficients. design tool allows compensator described terms pole frequencies, zero frequencies gain desired control loop. addition, Design Tool used characterize power stage that compensator coefficients chosen based total loop gain each feedback system. coefficients filter sections generated thru modeling power stage load Power+ Designer. Additionally, UCD9240 allows several banks filter coefficients which configured switch automatically based operation power stage. compensator also allows minimum maximum duty cycle programmed. This again done issuing PMBus command device. Engine output compensator feeds high resolution engine. engine produces pulse width modulated gate drive output from device. operation, compensator calculates necessary duty cycle 16-bit number representing value from 1.0. This duty cycle value multiplied period generate duty period. resolution duty period psec. When UCD9240 configured drive multiple power stage circuits from compensator, each gate drive output pulse width adjusted correct current imbalance between connected power stage sections. This done monitoring current using input current sense pins increasing pulse width signal driving power stage with lowest current decreasing pulse width signal driving power stage with highest measured current. Each engine synchronized another engine external sync signal SYNC_IN SYNC_OUT pins. input sync signal causes ramp timer reset. Sync signal outputs from each four engines occur when ramp timer crosses programmed threshold. this phase multiple power stage drive signals tightly controlled. synchronization behavior programmed through MFR_SPECIFIC PMBus command.
www.ti.com
UCD9240 Digital Point Load System Controller
Engine
SysClk SyncIn
high ramp counter reset
Switch period Current balance Compensator output EADC trigger threshold SyncOut phase
gate drive output
EADC trigger
SyncOut
switching frequency issuing FREQUENCY_SWITCH PMBus command.
Fault Handling
UCD9240 several fault handling features. following faults handled. monitored over-voltage under-voltage. logic high signal from external source, such gate driver will cause fault immediately shut down engine. response event programmed through PMBus command. device contains programmable internal analog comparators that monitor current sense inputs. current sense input exceeds programmed threshold signal shut down. Monitoring averaging current sense inputs each multiphase power stage that makes output rail. Over current under current (negative) thresholds programmed PMBus each rail. response event also programmed through PMBus command. Temperature periodically measured compared PMBus configured over-temperature threshold.
Temperature Measurement
UCD9240 ability measure current temperature controlled power stage. Temp select pins TMUX0-2 used control external analog multiplexer which cycles through each power stage temperature measurement signals. programmed accept output from either linear device such LM20 temperature sensor diode forward voltage.
www.ti.com
UCD9240 Digital Point Load System Controller
Figure Temperature (4-rail, 6-phase example)
Current Measurement
Pins CS1-A, CS1-B, CS2-A, CS2-B, CS3-A, CS3-B, CS4-A, CS4-B used measure output inductor current each controlled power stages. MFR_SPECIFIC PMBus commands used calibrate each measurement. When measured current exceeds either over-current undercurrent threshold FAULT declared UCD9240 performs PMBus programmed fault recovery. current measurements digitally filtered (averaged) before compared against FAULT threshold. response PMBus request current reading, device will return average current value. When UCD9240 configured drive multi-phase power converter, device will average current measurement each power stages tied power rail.
Current Sense Detection
Several mechanisms provide sense output current. This allows design power systems with multiple layers protection. logic high signal FAULT input will immediately drive signal associated page (rail/output) low. signal will driven between usec later. intelligent gate driver such UCD7230 used generate FAULT signal. UCD7230 monitors voltage drop across high side exceeds resistor programmed threshold, UCD7230 activates output turns drives. used drive FAULT input UCD9240. Typically, FAULT input used monitor protect against short circuit switches load. Therefore this threshold highest current setting multiple over-current settings. Four current sense inputs wired internal analog comparator, each page (rail/output). threshold current sense input 2.0V. This input used detect output current sense amplifier such amplifier UCD7230 which monitors current power stage inductor. current sense voltage exceeds 2.0V corresponding output immediately driven low. signal will driven between usec later. over-current threshold condition programmed choosing appropriate divider network input CSx.y pin. This forms "middle" level over-current protection. Each Current Sense input UCD9240 also monitored 12-bit ADC. This measured value averaged compared with PMBus programmable threshold. This threshold typically lowest overcurrent setting closest maximum allowed current design.
www.ti.com
UCD9240 Digital Point Load System Controller
PACKAGING 64-pin Package
Notes: linear dimensions millimeters. Dimensioning tolerancing ASME Y14.5-1994. This drawing subject change without notice. Quad Flatpack, no-leads (QFN) package configuration.
www.ti.com
UCD9240 Digital Point Load System Controller
80-pin Package
Notes: linear dimensions millimeters. This drawing subject change without notice. Falls within JEDEC MS-026
Ordering Information
Part Number Package Operating Temp. Range,
UCD9240PHR
80-pin
UCD9240RHBR
64-pin
www.ti.com
PACKAGE OPTION ADDENDUM
www.ti.com
4-May-2007
PACKAGING INFORMATION
Orderable Device UCD9240RGCR UCD9240RGCT
Status PREVIEW PREVIEW
Package Type
Package Drawing
Pins Package Plan 2000
Lead/Ball Finish Call Call
Peak Temp Call Call
marketing status values defined follows: ACTIVE: Product device recommended designs. LIFEBUY: announced that device will discontinued, lifetime-buy period effect. NRND: recommended designs. Device production support existing customers, does recommend using this part design. PREVIEW: Device been announced production. Samples available. OBSOLETE: discontinued production device.
Plan planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), Green (RoHS Sb/Br) please check latest availability information additional product content details. TBD: Pb-Free/Green conversion plan been defined. Pb-Free (RoHS): TI's terms "Lead-Free" "Pb-Free" mean semiconductor products that compatible with current RoHS requirements substances, including requirement that lead exceed 0.1% weight homogeneous materials. Where designed soldered high temperatures, Pb-Free products suitable specified lead-free processes. Pb-Free (RoHS Exempt): This component RoHS exemption either lead-based flip-chip solder bumps used between package, lead-based adhesive used between leadframe. component otherwise considered Pb-Free (RoHS compatible) defined above. Green (RoHS Sb/Br): defines "Green" mean Pb-Free (RoHS compatible), free Bromine (Br) Antimony (Sb) based flame retardants exceed 0.1% weight homogeneous material)
MSL, Peak Temp. Moisture Sensitivity Level rating according JEDEC industry standard classifications, peak solder temperature. Important Information Disclaimer:The information provided this page represents TI's knowledge belief date that provided. bases knowledge belief information provided third parties, makes representation warranty accuracy such information. Efforts underway better integrate information from third parties. taken continues take reasonable steps provide representative accurate information have conducted destructive testing chemical analysis incoming materials chemicals. suppliers consider certain information proprietary, thus numbers other limited information available release. event shall TI's liability arising such information exceed total purchase price part(s) issue this document sold Customer annual basis.
Addendum-Page
IMPORTANT NOTICE
Texas Instruments Incorporated subsidiaries (TI) reserve right make corrections, modifications, enhancements, improvements, other changes products services time discontinue product service without notice. Customers should obtain latest relevant information before placing orders should verify that such information current complete. products sold subject TI's terms conditions sale supplied time order acknowledgment. warrants performance hardware products specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques used extent deems necessary support this warranty. Except where mandated government requirements, testing parameters each product necessarily performed. assumes liability applications assistance customer product design. Customers responsible their products applications using components. minimize risks associated with customer products applications, customers should provide adequate design operating safeguards. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right relating combination, machine, process which products services used. Information published regarding third-party products services does constitute license from such products services warranty endorsement thereof. such information require license from third party under patents other intellectual property third party, license from under patents other intellectual property Reproduction information data books data sheets permissible only reproduction without alteration accompanied associated warranties, conditions, limitations, notices. Reproduction this information with alteration unfair deceptive business practice. responsible liable such altered documentation. Resale products services with statements different from beyond parameters stated that product service voids express implied warranties associated product service unfair deceptive business practice. responsible liable such statements. products authorized safety-critical applications (such life support) where failure product would reasonably expected cause severe personal injury death, unless officers parties have executed agreement specifically governing such use. Buyers represent that they have necessary expertise safety regulatory ramifications their applications, acknowledge agree that they solely responsible legal, regulatory safety-related requirements concerning their products products such safety-critical applications, notwithstanding applications-related information support that provided Further, Buyers must fully indemnify representatives against damages arising products such safety-critical applications. products neither designed intended military/aerospace applications environments unless products specifically designated military-grade "enhanced plastic." Only products designated military-grade meet military specifications. Buyers acknowledge agree that such products which designated military-grade solely Buyer's risk, that they solely responsible compliance with legal regulatory requirements connection with such use. products neither designed intended automotive applications environments unless specific products designated compliant with ISO/TS 16949 requirements. Buyers acknowledge agree that, they non-designated products automotive applications, will responsible failure meet such requirements. Following URLs where obtain information other Texas Instruments products application solutions: Products Amplifiers Data Converters Interface Logic Power Mgmt Microcontrollers Power Wireless amplifier.ti.com dataconverter.ti.com dsp.ti.com interface.ti.com logic.ti.com power.ti.com microcontroller.ti.com www.ti.com/lpw Applications Audio Automotive Broadband Digital Control Military Optical Networking Security Telephony Video Imaging Wireless www.ti.com/audio www.ti.com/automotive www.ti.com/broadband www.ti.com/digitalcontrol www.ti.com/military www.ti.com/opticalnetwork www.ti.com/security www.ti.com/telephony www.ti.com/video www.ti.com/wireless
Mailing Address: Texas Instruments, Post Office 655303, Dallas, Texas 75265 Copyright 2007, Texas Instruments Incorporated

UCD9240 Digital Point Load System Controller FEATURES Controls po

Top Searches for this datasheet

Other recent searches