5V/50mA Noise Inductorless Boost Converter General Description

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

5V/50mA Noise Inductorless Boost Converter General Description

Datasheet Thumbnail

Top Searches for this datasheet

AS1301
5V/50mA Noise Inductorless Boost Converter
General Description
AS1301 50mA inductorless boost converter using double H-bridge charge-pump topology with external flying capacitors. AS1301 runs 1MHz fixed frequency utilized with noise regulation scheme allow usage together with sensitive circuitry from same battery supply. Designed reside portable space limited equipment 1MHz charge pump converts 5.25V input regulated output with accuracy. shutdown function reduces supply current <5µA disconnects load from output. integrated soft-start circuitry prevents current spikes being drawn from battery during start-up. AS1301 available TDFN (3x3x0.8mm) 10-pin WL-CSP 8-bumps packages.
Features
Efficiency 5.25V Input Voltage Regulated Output Automatic Mode Up-Switching <5µA Shutdown Current Tolerant Enable Signal 50mA Load Current Overload Protection Output Disconnected During Shutdown Soft Start Inductor Required Small External Components Required (COUT 2.2µF, CFLY 220nF) Noise Fixed Frequency 1MHz Charge Pump: Battery Feed Through Mode Single Phase Mode Dual Phase Mode Package Options: TDFN (3x3x0.8mm) 10-pin WL-CSP 8-bumps with 0.5mm pitch
Applications
device ideal dual/triple cells single Li-Ion battery cell conversion, mobile phones, portable instruments, microprocessor based systems, remote data-acquisition systems, inductorless DC-DC conversion. Figure Block Diagram
CFLY1 VBATT C1CFLY2 C25V Supply VOUT COUT 2.2µF
VBATT CBAT 2.2µF
AS1301
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Assignments
Assignments
Figure Assignments (Through View)
VOUT
AS1301
C1EN VBATT VOUT VBATT C2C1A1
TDFN (3x3x0.8mm) 10-pin
WL-CSP 8-bumps
Descriptions
Table Descriptions Name VOUT C1C2C2+ VBATT Pinout TDFN Number Exposed Description Enable (operating EN=1) Output voltage charge pump Connector flying Connector flying Connector flying Connector flying Supply voltage Ground Leave open connect Leave open connect Leave open connect
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Absolute Maximum Ratings
Absolute Maximum Ratings
Stresses beyond those listed Table cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated Section Electrical Characteristics page implied. Exposure absolute maximum rating conditions extended periods affect device reliability. Table Absolute Maximum Ratings Parameter pins Operating Temperature Range Storage Temperature Range -0.3 +7.0 +125 Units MIL-Std. 883E 3015.7 methods reflow peak soldering temperature (body temperature) specified accordance with IPC/JEDEC J-STD020C "Moisture/Reflow Sensitivity Classification Non-Hermetic Solid State Surface Mount Devices". lead finish Pb-free leaded packages matte (100% Sn). Notes
Package Body Temperature
+260
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Electrical Characteristics
Electrical Characteristics
5.25V, VOUT COUT CBAT 2.2µF, CFLY1 CFLY2 =220nF TAMB Typical values TAMB Unless otherwise specified. Table Electrical Characteristics Symbol VOFF VBATT VCP5 IOUT Vripple tSTART Iinr VO/IO11 VO/IO23 VO/IO12 fOSC tdebup IOP12 IOP23 IOP11 IOFF TOFFL TOFFH Input Levels Input High level Input level Parameter Startup Voltage, Rising VBATT Startup Voltage, Falling VBATT Battery Supply Voltage Settled Average Output Voltage Load Current Output Voltage Ripple Start-up Time Inrush Current Load Regulation Mode Load Regulation Mode Load Regulation Mode Efficiency Switching Mode Efficiency Switching Mode Oscillator Frequency Switching Debounce Time Operating Quiescent Current Operating Quiescent Current Operating Current Mode Shut Down Current Temperature Shut-down Temperature Shut-down mode without load mode without load without load Mode Mode VBATT IOUT 10~50mA VBATT 4.5V, IOUT 10~50mA VBATT 3.1V, IOUT 10~50mA VBATT 3.1V, IOUT 30mA VBATT 3.5V, IOUT 30mA optional selectable mV/mA VOUT 5.1V load after startup COUT 2.2µF, 50mA load 2.505 VON/ VOFF 4.75 Conditions 2.865 5.25 5.25 Units mVPP
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Typical Operating Characteristics
5.25V, VOUT COUT CBAT 2.2µF, CFLY1 CFLY2 =220nF, TAMB Unless otherwise specified Figure Efficiency vs.Input Voltage, ILOAD=10mA
Figure Efficiency vs.Input Voltage, ILOAD=20mA
Efficiency
Efficiency
2.75 3.25 3.75 4.25 4.75 5.25
mode mode mode
2.75 3.25 3.75 4.25 4.75 5.25
mode mode mode
Input Voltage
Input Voltage
Figure Efficiency vs.Input Voltage, ILOAD=30mA
Figure Efficiency vs.Input Voltage, ILOAD=40mA
Efficiency
Efficiency
2.75 3.25 3.75 4.25 4.75 5.25
mode mode mode
2.75 3.25 3.75 4.25 4.75 5.25
mode mode mode
Input Voltage
Input Voltage
Figure Efficiency vs.Input Voltage, ILOAD=50mA
Figure Quiescent Current Input Voltage
Quiescent Current (mA)
mode mode mode
2.25
Efficiency
2.75 3.25 3.75 4.25 4.75 5.25
3.25
4.25
5.25
Input Voltage
Input Voltage
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Figure Output Voltage Output Current
Figure Output Voltage Output Current
Output Voltage
4.5V
Output Voltage
3.5V
Output Current (mA)
Output Current (mA)
Figure Output Voltage Input Voltage
Figure Output Voltage Temp., IOUT 0.1mA
5.07
3.1V
Output Voltage
2.75
10mA 30mA
50mA
Output Voltage
5.06
4.2V 3.6V
5.05
5.04
3.25
3.75
4.25
4.75
5.25
5.03
Input Voltage
Temperature (°C)
Figure Output Voltage Temp., IOUT 10mA
5.05 5.04
3.1V 10mA 30mA 50mA
Figure Output Voltage Temp., IOUT 30mA
5.07
3.1V VINVIN 3.1V 4.2V 3.6V 4.2V
Output Voltage Output Voltage
Output Voltage
5.03 5.02 5.01 4.99
5.06 5.05
4.2V 3.6V
3.6V
5.04 5.03
4.98 2.75 3.25
3.75
4.25
4.75
5.25
Input Voltage Temperature(°C)
Temperature (°C) Temperature (°C)
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Figure Efficiency Output Current,
Figure Efficiency Output Current, 3.3V
Efficiency
Efficiency
mode
mode mode
Output Current (mA)
Output Current (mA)
Figure Efficiency Output Current, 3.5V
Figure Efficiency Output Current,
Efficiency
Efficiency
mode mode
mode mode
Output Current (mA)
Output Current (mA)
Figure Efficiency Output Current, 4.3V
Figure Efficiency Output Current, 4.7V
Efficiency
mode mode
Efficiency
mode
Output Current (mA)
Output Current (mA)
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Figure Load Transient, 5.2V
Figure Load Transient, 3.6V
20mA/Div
50µs/Div
50µs/Div
Figure Start-Up Time,
Figure Start-Up Time, 5.25V
2V/Div
VOUT
VOUT
5V/Div 100mA/Div
200µs/Div
200µs/Div
Figure Line Transient, 4.5V 3.5V
1kHz RLOAD Duty Cycle 200µs/Div
www.austriamicrosystems.com
100mA/Div
IBATT
1V/Div 50mV/Div
VOUT
Revision 1.00
5V/Div 100mA/Div
IBATT
IBATT
2V/Div
20mA/Div
IOUT
IOUT
100mV/Div
VOUT
50mV/Div
VOUT
AS1301 Data Sheet
Detailed Description
Detailed Description
Operating Principle
Functional Description
AS1301 high efficiency noise switched capacitor DC/DC converter that capable boost operation. equipped with built-in coupled H-bridge type switch configurations. Based value output voltage system automatically initiates mode up-switching achieve highest possible efficiency. regulation output voltage achieved regulation loop, which modulates on-resistance power transistors that amount charge transferred from input output each clock cycle controlled equal charge needed load.
Regulation Loop
AS1301 operates constant frequency load. regulation loop power transistors, resistor divider, error amplifier used keep output voltage within allowed limits. error amplifier, including loopfilter compensation ramp, takes feedback reference inputs generates error voltage signal. error voltage then used gate voltage power transistor which modulates on-resistance latter. modulated transistor on-resistance controls charge transferred from input output therefore regulation output realized. Based adjusting amount charge transferred, this regulation concept delivers smallest voltage ripple possible. Figure Functional Block Diagram
CFLY1 C1CFLY2 C2VOUT COUT Vctrl Temp
Soft Start
VBATT CBAT
Double-H Bridge Topology
State Machine Control Logic
Mode Select
Vmode trig
AS1301
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Detailed Description
Switch Configuration
AS1301 nine built-in power switches shape coupled H-bridge topologies. system features operation mode well operation where input directly connected output. This feedthrough mode suitable input voltages higher than output voltage. operation mode flying capacitors placed series each capacitor charged half input voltage. pumping phase flying capacitors place parallel. bottom-plate parallel flying capacitors CFLY1 CFLY2 then connected input voltage that voltage top-plate flying capacitors boosted voltage equal VBATT+ VBATT/2. connecting top-plate capacitors output, output voltage mode half VBATT. top-plate voltage higher than regulation loop adapts power transistor's on-resistance drop some voltage. operation mode runs single-phase operation only. Figure Single Phase Operating Mode
Charging Flying Capacitors VOUT VBATT CFLY1 CFLY2 VBATT CFLY1 CFLY2 Generating Output Voltage VOUT
operation mode just both flying capacitors placed series input voltage, therefore charged input voltage. During pumping phase input voltage connected bottom charged flying capacitor CFLY. voltage top-plate capacitor boosted 2VBATT. connecting top-plate capacitor output, output charged double VBATT. top-plate voltage higher than regulation loop limits charge transfer output. collaboration with second flying capacitor this mode features dual-phase operation. Figure Dual Phase Operating Mode
Charging CFLY1, CFLY2 used output voltage VOUT VBATT CFLY1 CFLY2 VBATT CFLY1 CFLY2 Charging CFLY2, CFLY1 used output voltage VOUT
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Detailed Description
Overload Protection
When output voltage drops about 200mV below battery voltage very high load AS1301 enters overload protection condition. this condition output connected input current limiting connection. Once overload removed, device enters soft start periode ramps nominal output voltage.
Undervoltage Lockout
AS1301 equipped with undervoltage lockout functionality. battery voltage drops below 2.7V (typ) device enters undervoltage lockout condition. device remains this condition until battery voltage high enough enter soft start period. internal hysteresis 100mV will prevent ringing during startup. input voltage climbs back 2.8V (typ) after such condition device will turn-on automatically again.
Shutdown Mode
AS1301 enters low-power shutdown mode when logic low. shutdown charge-pump action halted, output completely disconnected from input VOUT will drop During shutdown output voltage forced higher then input voltage, because permanent monitoring input- output voltage will prevent erroneous current form output back input during shutdown.
Thermal Shutdown
AS1301 offers thermal shutdown, which prevents eventual damage over-temperature condition. Thermal shutdown will initiated junction temperature exceeds 145°C. temperature drops below this value, thermal shutdown will released automatically device will resume operation.
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Application Information
Application Information
External Component Selection
high internal oscillator frequency 1MHz permits small capacitors both flying capacitors output capacitors. given load value flying- output capacitors well their affecting output voltage performance. general, capacitor's inversely proportional physical size. Larger capacitances higher voltage ratings tend reduce ESR. function frequency too, must rated devices operating frequency. Another factor affecting capacitor temperature. Note: Many capacitors have huge capacity variation over temperature. This compensated choosing capacitor with better thermal coefficient choosing larger nominal value ensure proper operation over temperature.
Input Output Capacitor Selection
critical which type input bypass capacitor CBAT output filter capacitor COUT used, will still affect performance charge-pump. capacitors should used minimize VOUT ripple. Multi-layer ceramic capacitors recommended since they have extremely available small footprints.
Input Capacitor
1.2µF/2.2µF input bypass capacitor such tantalum ceramic recommended reduce noise supply transients. During startup mode change supplies part peak input current drawn device. Table Recommended Input Capacitor Part Number GRM21BR71A225KA01 2.2µF Code Rated Voltage Dimensions (L/W/T) 2x1.2x1.35mm Manufacturer Murata www.murata.com
Output Capacitor
output capacitor charged VOUT voltage during pumping phase. output capacitor introduces steps output voltage waveform whenever charge pump charges COUT. These steps contribute ripple voltage VOUT. Therefore, ceramic tantalum capacitors recommended COUT minimize output voltage ripple. Table Recommended Output Capacitor Part Number GRM21BR71A225KA01 2.2µF Code Rated Voltage Dimensions (L/W/T) 2x1.2x1.35mm Manufacturer Murata www.murata.com
Charge-Pump Capacitor Selection
ensure required output current avoid high peak currents values flying capacitors CFLY1 CFLY2 very critical. 120nF capacitor sufficient most applications. Dependent operation mode AS1301 alternately charges discharges CFLY1/2 While output capacitor produces part output voltage ripple, voltage drop caused flying capacitors affects maximum available output voltage. Therefore capacitors, e.g. tantalum ceramic, recommended flying capacitors well. Table Recommended Charge-Pump Capacitor Part Number GRM188R71E224KA88 220nF Code Rated Voltage Dimensions (L/W/T) 1.6x0.8x0.87mm Manufacturer Murata www.murata.com
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Package Drawings Markings
Package Drawings Markings
device available TDFN (3x3x0.8mm) 10-pin WL-CSP 8-bumps package. Figure TDFN (3x3x0.8mm) 10-pin package Diagram
DETAIL
E2/2
INDEX AREA (D/2 xE/2)
(ND-1)
BVIEW
INDEX AREA (D/2 xE/2)
VIEW
Terminal
SIDE VIEW
Datum
TERMINAL SIDE
Table TDFN (3x3x0.8mm) 10-pin package Dimensions Symbol 0.70 0.75 0.80 0.00 0.02 0.05 0.20 0.03 0.15 0.13 0.15 0.10 0.10 0.05 0.08 0.10 Note:
Symbol
Dimensioning tolerancing conform ASME Y14.5M-1994. dimensions millimeters, angle degrees. total number terminals.
D2/2
SEATING PLANE
0.08
3.00 3.00
2.20 1.40 0.30 0.20 0.18
0.40
2.70 1.75 0.50
0.25 0.50
0.30
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Package Drawings Markings
Figure WL-CSP 8-bumps Package Diagram
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Ordering Information
Ordering Information
Table Ordering Information Part AS1301A-BWLT AS1301A-BTDT Marking ASO4 ASO4 Description 5V/50mA Noise Inductorless Boost Converter 5V/50mA Noise Inductorless Boost Converter Delivery Form Package WL-CSP 8-bumps TDFN (3x3x0.8mm) 10-pin
www.austriamicrosystems.com
Revision 1.00
AS1301 Data Sheet
Ordering Information
Copyrights
Copyright 1997-2007, austriamicrosystems Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered rights reserved. material herein reproduced, adapted, merged, translated, stored, used without prior written consent copyright owner. products companies mentioned trademarks registered trademarks their respective companies.
Disclaimer
Devices sold austriamicrosystems covered warranty patent indemnification provisions appearing Term Sale. austriamicrosystems makes warranty, express, statutory, implied, description regarding information forth herein regarding freedom described devices from patent infringement. austriamicrosystems reserves right change specifications prices time without notice. Therefore, prior designing this product into system, necessary check with austriamicrosystems current information. This product intended normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, high reliability applications, such military, medical life-support life-sustaining equipment specifically recommended without additional processing austriamicrosystems each application. shipments less than parts manufacturing flow might show deviations from standard production flow, such test flow test location. information furnished here austriamicrosystems believed correct accurate. However, austriamicrosystems shall liable recipient third party damages, including limited personal injury, property damage, loss profits, loss use, interruption business indirect, special, incidental consequential damages, kind, connection with arising furnishing, performance technical data herein. obligation liability recipient third party shall arise flow austriamicrosystems rendering technical other services.
Contact Information
Headquarters austriamicrosystems A-8141 Schloss Premstaetten, Austria Tel: 3136 Fax: 3136
Sales Offices, Distributors Representatives, please visit:
www.austriamicrosystems.com
Revision 1.00

5V/50mA Noise Inductorless Boost Converter General Description

Top Searches for this datasheet

Other recent searches