Details subject change without notice. BUCK_BOOST BOOST CONTROLLE
|
|
|
Top Searches for this datasheet
AAT1105A
Details subject change without notice.
BUCK_BOOST BOOST CONTROLLER
Features
Complete Power Control Circuitry CH1: Buck_Boost, CH2: Boost Under-Voltage Lockout (UVLO) Protection Totem Pole Output Output Short Circuit Protection Dead-Time Control0% 100% Wide Operating Frequency 10kHz 800kHz Shutdown Control Power Good Protection
General Description
AAT1105A provides integrated two-channel pulse-width-modulation (PWM) solution power supply DC-DC system. This device offers system engineers flexibility tailor-make power supply circuitry specific applications. Each channel contains error amplifier, comparator, dead-time control (DTC), output driver. under-voltage protection, oscillator, short circuit protection (SCP) voltage reference circuit common features channels. AAT1105A contains step-up (boost) circuit channel (CH2) inverting (buck_boost) circuit channel (CH1). Dead-time control provide 100% dead-time through resistive divider network. Soft-start implemented paralleling resistor with capacitor. dead-time control inputs assigned individually, dead-time control inputs used control operation. compact design optimized external parts AAT1105A offers simple effective solution.
Range: 2.6V~6.5V
Configuration
VIEW
SHDN DTC1 OUT1 VREF DTC2 OUT2
(TSSOP-16 PACKAGE)
Advanced Analog Technology, Inc.
Page
AAT1105A
Description Name
SHDN DTC1 OUT1 OUT2 DTC2 VREF
Description External Timing Capacitance External Timing Resistance
Shutdown Input PinInternal Pull Inverting Input Error Amplifier Output Error Amplifier Output Dead-Time Soft-Start Setting Output Ground Power Supply Output Output Dead-Time Soft-Start Setting Output Error Amplifier Inverting Input Error Amplifier Power Good Output Timer Latch Setting Reference Voltage (1.293V) Output
Advanced Analog Technology, Inc.
Page
AAT1105A
Absolute Maximum Ratings CHARACTERISTICS Supply Voltage Input Voltage DTC, SHDN)
Output Voltage Output Current Operating Free-Air Temperature Range Storage Temperature Range Power Dissipation
SYMBOL
Tstorage
VALUE
+0.3
/+120 +125
UNIT
Recommended Operating Conditions
Supply Voltage, Input Voltage, IE1, Output Voltage Oscillator (OSC) Capacitance Oscillator (OSC) Resistance Oscillator (OSC) Frequency Output Current, out1 Operating Free-Air Temperature
Symbol
15,000 +50/
Unit
Advanced Analog Technology, Inc.
Page
AAT1105A
Electrical Characteristics, 3.3V (Unless Otherwise Specified) (See Note Oscillator Parameter Test Condition 220pF, Frequency 5.6k 2.6V 6.0V, Frequency Changes with 220pF, 5.6k Under-Voltage Protection
Parameter Test Condition Unit
Unit
Upper Threshold Voltage Lower Threshold Voltage Hysteresis VUPH VUPL
VUPH VUPL VHYS
1.81 1.57
2.03 1.79 0.24
2.25 2.01
Short Circuit Protection Control
Parameter Test Condition Unit
Input Threshold Voltage Input Threshold Voltage Short-Circuit Detect Threshold Voltage Terminal Source Current Stand-by Voltage Latch Voltage
Vtscd VSTB
1.81 0.30 0.76
1.29 0.37 0.85
1.40 0.44 0.94
Shutdown Control
Parameter Test Condition Unit
Shutdown Enable Voltage Shutdown Release Voltage
Note Typical values parameters specified
Advanced Analog Technology, Inc.
Page
AAT1105A
Electrical Characteristics, 3.3V (Unless Otherwise Specified) (See Note (Cont.) Reference Voltage
Parameter Test Conditions
Unit
Internal Reference Voltage Reference Voltage Input Voltage Regulation Output Regulation
VREFi VREF
-1mA -1mA -1mA 2.6V 6.0V -0.1mA
0.622 0.641 0.660 1.280 1.293 1.306
(Error Amplifier)
Parameter Test Condition
Unit
±100
Input Offset Voltage Input Bias Current Input Voltage Range Open-Loop Voltage Amplification Output Voltage Swing Output Sink Current Output Source Current Common-Mode Rejection Ratio
VOS+ VOS- CMRR
CH1,CH2, Unity Gain CH1, CH1,
OE=0.65V OE=0.65V
PRDB (Power Good Protection)
Parameter Test Condition
Unit
Level Output Voltage
Vdbl
Pull-High 100k
Advanced Analog Technology, Inc.
Page
AAT1105A
Electrical Characteristics, 3.3V (Unless Otherwise Specified) (See Note (Cont.) Dead Time Control Parameter Test Condition Unit VDTC 1.0V Input Bias Current
Input Threshold (DTC1) Input Threshold (DTC2) Voltage
V1d100
Duty 10kHz Duty 100%, 10kHz Duty 10kHz Duty 100%, 10kHz 20µA 50µA DTC1=1.08V DTC2=0.48V
0.92 0.48 0.48 0.92 1.15
1.00 0.56 0.56 1.00 1.20
1.08 0.64 0.64 1.08
Voltage
V2d100 V1DTC I1DTC
Latch Input Voltage (DTC1) Latch Input Voltage (DTC2) Latch Mode Source Current (DTC1) Latch Mode Source Current (DTC2)
Output Stage
Parameter Test Condition
High-Level Output Voltage Low-Level Output Voltage Rise Time Fail Time Leakage Current Capacitance Output
RISE FALL LEAK
=+50mA =1,000pF =1,000pF =6.0V
Unit
Operating Current
Parameter Test Condition
Supply Current
DD-OFF DD-ON
Output "OFF" State
Unit
Advanced Analog Technology, Inc.
Page
AAT1105A
Block Diagram
VREFi 1.233V Err-Amp Comp
OUT1
VREFi 1.233V
Err-Amp VREF
OUT2
DTC1 DTC2
LATCH LATCH
UVLO
VREF
SHDN
VREF
VREF
SHUTDOWN CONTROL
Advanced Analog Technology, Inc.
Page
AAT1105A
Application Circuit
OUT1
VREF
AAT1105A
OUT2 SHDN SHDN VREF
DTC1
DTC2
CSCP
Advanced Analog Technology, Inc.
Page
AAT1105A
Application Circuit
Optional Circuit power good protection
Optional Circuit: Positive charge pump circuit
OUT1
VREF
AAT1105
Optional Circuit discharge
OUT2 SHDN SHDN
VREF DTC1 DTC2
Optional Circuit Negative charge pump circuit
CSCP
Advanced Analog Technology, Inc.
Page
AAT1105A
Buck-BoostInverting Timing Chart
1.0V
0.37V
0.56V
OUTPUT OUTPUT
0.85V
tSCP
COMP
2.03V
LOCKOUT FREE
Note:
Advanced Analog Technology, Inc.
Page
AAT1105A
Boost Step-upTiming Chart CH-2
1.29V 1.0V
0.56V
OUTPUT
OUTPUT
0.85
tSCP
COMP
2.03V
LOCKOUT FREE
Note:
Advanced Analog Technology, Inc.
Page
AAT1105A
Package Dimension
16-Pin TSSOP
Advanced Analog Technology, Inc.
Page
AAT1105A
Package Dimension (Cont.)
SYMBOLS
DIMENSIONS MILLIMETERS 1.05 0.05 -0.20 -4.900 6.20 4.30 -0.50 -TYP 1.10 0.10 1.00 0.25 0.127 5.075 6.40 4.40 0.65 0.60 -MAX 1.20 0.15 1.05 0.28 -5.100 6.60 4.50 -0.70 0.076
DEMINSIONS INCHES 0.041 0.002 -0.008 -0.1930 0.244 0.170 -0.020 -TYP 0.043 0.004 0.039 0.010 0.005 0.1998 0.252 0.173 0.026 0.024 -MAX 0.047 0.006 0.041 0.011 -0.2000 0.260 0.177 -0.028 0.003
NOTE: CONTROLLING DIMENSION: MILLIMETERS LEAD FRAME MATERIAL: OLIN C7025/EFTEC DIMENSION DOES INCLUDE MOLD FLASH, BURRS GATE BURRS. MOLD FLASH, BURRS GATE BURRS SHALL EXCEED 0.006" [0.15 MILLIMETERS] END. DIMENSION "E1" DOES INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL EXCEED 0.010" [0.25 MILLIMETERS] SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.003" [0.08 MILLIMETERS] TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION. DAMBAR CANNOT LOCATED LOWER RADIUS FOOT. MINIMUM SPACE BETWEEN PROTRUSION ADJACENT LEAD 0.0028" [0.07 MILLIMETERS]. TOLERANCE: 0.010 [0.25 MILLIMETERS] UNLESS OTHERWISE SPECIFIED. OTHERWISE DIMENSION FOLLOW ACCEPTABLE SPEC. REFERENCE DOCUMENT: JEDEC SPEC MO-153.
Advanced Analog Technology, Inc.
Page
AAT1105A
Tape Reel
Advanced Analog Technology, Inc.
Page
AAT1105A
Tape Reel (Cont.)
NOTE:
SPROCKET HOLE PITCH CUMULATIVE TOLERANCE MILLIMETERS. CAMBER EXCEED MILLIMETER MILLIMETERS. MATERIAL: ANTI-STATIC BLACK ADVANTEK POLYSTYRENE. MEASURED PLANE MILLIMETERS ABOVE BOTTOM POCKET. MEASURED FROM PLANE INSIDE BOTTOM POCKET SURFACE CARRIER. POCKET POSITION RELATIVE SPROCKET HOLE MEASURED TRUE POSITION POCKET, POCKET HOLE.
Part Marking
TSSOP16 Marking
AAT1105A XXXXXX
TSSOP16 Back Marking
YYWW
Advanced Analog Technology, Inc.
Page
AAT1105A
Ordering Information
Advanced Analog Technology, Inc.
Page
Other recent searches
MAC97 - MAC97 MAC97 Datasheet
KGA4115 - KGA4115 KGA4115 Datasheet
HVA121T-1 - HVA121T-1 HVA121T-1 Datasheet
HVA121SM-12 - HVA121SM-12 HVA121SM-12 Datasheet
CVCO55BE-2430-2585 - CVCO55BE-2430-2585 CVCO55BE-2430-2585 Datasheet
BCX56 - BCX56 BCX56 Datasheet
Privacy Policy | Disclaimer
© 2012 Datasheet Archive
