AS1357-T-F

AS1357-T-F Datasheet

AS1357

Part	Datasheet
AS1357-T-F	AS1357-T-F (pdf)

Related Parts	Information
AS1357	AS1357
AS1357V-T	AS1357V-T
AS1357V	AS1357V

PDF Datasheet Preview
AS1357 Programmable Triple LDO Data Sheet 1 General Description The AS1357 is a high-performance triple CMOS lowdropout voltage regulator in a single QFN package. The efficient set of programmable power supplies is optimized to deliver the best compromise between quiescent current and regulator performance for mobile phones, PDAs, MP3 players, and other battery powered devices. The one-time-programmable OTP function provides greater design flexibility by allowing for independent programming of the output voltage for each regulator onsite. The OTP function allows for fast prototyping reducing development times and costs significant. Factory trimmed versions for full-production are also available. Stability is guaranteed with ceramic output capacitors of only 1µF ±20% X5R up to 4.7µF ±20% X5R . The low equivalent series resistance ESR of these capacitors ensures low output impedance at high frequencies. Regulation performance is excellent even under low dropout conditions, when the power transistor has to operate in linear mode. The low-noise performance allows direct connection of noise sensitive circuits without additional filtering networks. The AS1357 is available in a 12-pin QFN 4x4 or 16-pin QFN 3x3 package. 2 Key Features ! 3 Independent Voltage Regulators with Shutdown ! Output Current 200mA each LDO ! One Time Programmable Output Voltage User- or Factory-Trimmed ! Programmable Output Voltage Range to 3.3V in 0.1V Steps ! Accuracy ! PSRR 70dB at 1kHz, 40dB at 100kHz ! Line Regulation ±2mV ! Load Regulation ±0.6mV ! Supply Range 3 to 5.5V ! 0.2V Dropout Voltage I = 200mA ! Shutdown Current ! Supply Current Without Load 175µA typ ! Softstart for Low Inrush Current ! Stable with low ESR Ceramic Capacitors from 1 to 4.7µF ! Low Noise 40µV rms to 100kHz Bandwidth ! Thermal Protection ! Over-Current Protection ! Temperature Range -40 to +85°C ! Package Types 12-pin QFN 4x4 and 16-pin QFN 3x3 3 Applications The AS1357 is ideal for cordless and mobile phones, MP3 players, CD and DVD players, PDAs, handheld computers, digital cameras, and any other hand-held battery-powered device. Figure Pinout Assignments Top View EN3 N/C REF EN2 1 EN1 2 VDD 3 AS1357 12-pin QFN 4x4 9 GND 8 VDD 7 N/C VOUT1 VOUT2 VOUT3 13 GND Exposed Pad EN2 EN3 N/C REF 16 15 14 13 EN1 1 12 GND VDD 2 VDD 3 AS1357 16-pin QFN 3x3 11 GND 10 VDD VDD 4 9 VDD VOUT1 VOUT2 VOUT3 N/C 1 - 10 AS1357 Data Sheet - Pinout 4 Pinout Pin Assignments Furthermore, the AS1357 is available in pre-programmed versions with fixed output voltages see Ordering Information on page 5 - 10 AS1357 Data Sheet - Typical Application Figure AS1357 Block Diagram EN2 VDD EN3 GND Thermal Protection Overcurrent Protection Softstart Control VREF Thermal Protection Overcurrent Protection Softstart Control VREF VOUT1 VOUT2 Thermal Protection Overcurrent Protection Softstart Control VREF VOUT3 Reference Voltage AS1357 6 - 10 AS1357 Data Sheet - Package Drawings and Markings 8 Package Drawings and Markings The AS1357 is available in a 12-pin QFN 4x4 package and a 16-pin QFN 3x3 package. Figure 12-pin QFN 4x4 and 16-pin QFN 3x3 Packages Index Area D/2 xE/2 D2/2 aaa C 2x aaa C 2x Top View 11 NX ccc C See Detail B Pin 1 Marker Index Area D/2 xE/2 NXb 5 SEE Detail B bbb C A B ddd C Bottom View Side View Seating Plane -C- E2/2 E2 9 Ordering Information The AS1357 is available with preset LDO output voltages or customer-specific versions with a minimum order quantity of Each customer-specific device is factory trimmed to the desired output voltage see Table Table Ordering Information Part LDO Values AS1357-T User-programmable LDO values 1 AS1357 User-programmable LDO values 1 AS1357V-T 2 User-programmable LDO values 1 AS1357V 2 User-programmable LDO values 1 AS1357_A7A-T VOUT1 = 2.8V, VOUT2 = 2.5V, VOUT3 = 2.8V AS1357_uxy-T 3, 4 Customer-specific LDO values AS1357V_uxy-T 2, 3, 4 Customer-specific LDO values Delivery Form Tape and Reel Tray Tape and Reel Tray Tape and Reel ----- Package 12-pin QFN 4x4 12-pin QFN 4x4 16-pin QFN 3x3 16-pin QFN 3x3 12-pin QFN 4x4 12-pin QFN 4x4 16-pin QFN 3x3 The values are programmed via the AS1352/57 programming board. Available upon request. Contact austriamicrosystems, AG for more information. Customer-specific values are as follows: u = Customer-specific VOUT1 value suffix. x = Customer-specific VOUT2 value suffix. y = Customer-specific VOUT3 value suffix. “-T” suffix for tape and reel, no suffix for tray delivery form. Table Output Voltages Suffix Guide Part Suffix Output Voltage 8 AS1357_uxy 9 - 10 AS1357 Data Sheet - Ordering Information Copyrights Copyright 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG A-8141 Schloss Premstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 10 - 10

PDF Datasheet Preview

AS1357

Programmable Triple LDO

Data Sheet
1 General Description

The AS1357 is a high-performance triple CMOS lowdropout voltage regulator in a single QFN package. The efficient set of programmable power supplies is optimized to deliver the best compromise between quiescent current and regulator performance for mobile phones, PDAs, MP3 players, and other battery powered devices.

The one-time-programmable OTP function provides greater design flexibility by allowing for independent programming of the output voltage for each regulator onsite. The OTP function allows for fast prototyping reducing development times and costs significant. Factory trimmed versions for full-production are also available.

Stability is guaranteed with ceramic output capacitors of only 1µF ±20% X5R up to 4.7µF ±20% X5R . The low equivalent series resistance ESR of these capacitors ensures low output impedance at high frequencies.

Regulation performance is excellent even under low dropout conditions, when the power transistor has to operate in linear mode.

The low-noise performance allows direct connection of noise sensitive circuits without additional filtering networks.

The AS1357 is available in a 12-pin QFN 4x4 or 16-pin QFN 3x3 package.
2 Key Features
! 3 Independent Voltage Regulators with Shutdown ! Output Current 200mA each LDO ! One Time Programmable Output Voltage

User- or Factory-Trimmed ! Programmable Output Voltage Range to 3.3V in
0.1V Steps ! Accuracy ! PSRR 70dB at 1kHz, 40dB at 100kHz ! Line Regulation ±2mV ! Load Regulation ±0.6mV ! Supply Range 3 to 5.5V ! 0.2V Dropout Voltage I = 200mA ! Shutdown Current ! Supply Current Without Load 175µA typ ! Softstart for Low Inrush Current ! Stable with low ESR Ceramic Capacitors from 1 to
4.7µF ! Low Noise 40µV rms to 100kHz Bandwidth ! Thermal Protection ! Over-Current Protection ! Temperature Range -40 to +85°C ! Package Types 12-pin QFN 4x4 and
16-pin QFN 3x3
3 Applications

The AS1357 is ideal for cordless and mobile phones, MP3 players, CD and DVD players, PDAs, handheld computers, digital cameras, and any other hand-held battery-powered device.

Figure Pinout Assignments Top View

EN3 N/C REF

EN2 1 EN1 2 VDD 3

AS1357
12-pin QFN 4x4
9 GND 8 VDD 7 N/C

VOUT1 VOUT2 VOUT3
13 GND Exposed Pad

EN2 EN3 N/C REF
16 15 14 13

EN1 1
12 GND

VDD 2 VDD 3

AS1357
16-pin QFN 3x3
11 GND 10 VDD

VDD 4
9 VDD

VOUT1 VOUT2 VOUT3 N/C
1 - 10

AS1357 Data Sheet - Pinout
4 Pinout

Pin Assignments
Furthermore, the AS1357 is available in pre-programmed versions with fixed output voltages see Ordering Information on page
5 - 10

AS1357 Data Sheet - Typical Application Figure AS1357 Block Diagram

EN2 VDD

EN3 GND

Thermal Protection Overcurrent Protection Softstart

Control

VREF

Thermal Protection Overcurrent Protection Softstart

Control

VREF

VOUT1 VOUT2

Thermal Protection Overcurrent Protection Softstart

Control

VREF

VOUT3

Reference Voltage

AS1357
6 - 10

AS1357 Data Sheet - Package Drawings and Markings
8 Package Drawings and Markings

The AS1357 is available in a 12-pin QFN 4x4 package and a 16-pin QFN 3x3 package.

Figure 12-pin QFN 4x4 and 16-pin QFN 3x3 Packages

Index Area

D/2 xE/2

D2/2
aaa C 2x
aaa C 2x

Top View
11 NX
ccc C

See Detail B

Pin 1 Marker

Index Area D/2 xE/2

NXb 5

SEE Detail B
bbb C A B ddd C

Bottom View

Side View

Seating Plane -C-

E2/2 E2
9 Ordering Information

The AS1357 is available with preset LDO output voltages or customer-specific versions with a minimum order quantity of Each customer-specific device is factory trimmed to the desired output voltage see Table
Table Ordering Information

Part

LDO Values

AS1357-T

User-programmable LDO values 1

AS1357

User-programmable LDO values 1

AS1357V-T 2

User-programmable LDO values 1

AS1357V 2

User-programmable LDO values 1

AS1357_A7A-T

VOUT1 = 2.8V, VOUT2 = 2.5V, VOUT3 = 2.8V

AS1357_uxy-T 3, 4

Customer-specific LDO values

AS1357V_uxy-T 2, 3, 4

Customer-specific LDO values

Delivery Form Tape and Reel

Tray Tape and Reel

Tray Tape and Reel
-----

Package 12-pin QFN 4x4 12-pin QFN 4x4 16-pin QFN 3x3 16-pin QFN 3x3 12-pin QFN 4x4 12-pin QFN 4x4 16-pin QFN 3x3

The values are programmed via the AS1352/57 programming board. Available upon request. Contact austriamicrosystems, AG for more information. Customer-specific values are as follows:
u = Customer-specific VOUT1 value suffix. x = Customer-specific VOUT2 value suffix. y = Customer-specific VOUT3 value suffix. “-T” suffix for tape and reel, no suffix for tray delivery form.

Table Output Voltages Suffix Guide

Part

Suffix Output Voltage
8 AS1357_uxy
9 - 10
AS1357 Data Sheet - Ordering Information

Copyrights

Copyright 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters austriamicrosystems AG A-8141 Schloss Premstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01

For Sales Offices, Distributors and Representatives, please visit:
10 - 10

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS1357-T-F Datasheet file may be downloaded here without warranties.

Datasheet ID: AS1357-T-F 519615