AS1332-BWLT

AS1332-BWLT Datasheet

AS1332

Part	Datasheet
AS1332-BWLT	AS1332-BWLT (pdf)

Related Parts	Information
AS1332 EB	AS1332 EB

PDF Datasheet Preview
Datasheet AS1332 650mA, Step-Down DC-DC Converter for RF Power Amplifiers 1 General Description The AS1332 is a step-down DC-DC converter designed to power radiofrequency RF power amplifiers PAs from a single Li-Ion battery. The device also achieves high-performance in mobile phones and similar RF PA applications. The AS1332 steps down an input voltage of 2.7V to 5.5V to output voltages ranging from 1.3V to 3.16V. Using a VCON analog input, the output voltage is set for controlling power levels and efficiency of the RF PA. The RF interferences are minimized due to the fixedfrequency PWM operation. The battery consumption is reduced to 0.01µA typ. during shutdown. Because of the high switching frequencies 2 MHz tiny surface-mount components can be used. Additional to the small size the amount is also small. Only three external components are required, an inductor and two ceramic capacitors. The AS1332 is available in a 8-pin WL-CSP. 2 Key Features ! PWM Switching Frequency 2MHz ! Single Lithium-Ion Cell Operation 2.7V to 5.5V ! Dynamic Programmable Output Voltage 1.3V to 3.16V ! Maximum load capability of 650mA ! High Efficiency 96% Typ at 3.6VIN, 3.16VOUT at 400mA from internal synchronous rectification ! Current Overload Protection ! Thermal Overload Protection ! Soft Start ! 8-pin WL-CSP 3 Applications The AS1332 is an ideal solution for cellular phones, hand-held radios, RF PC cards, and battery powered RF devices. Figure AS1332 - Typical Application Circuit VIN 2.7V to 5.5V 10 µF VCON 0.52V to 1.27V PVIN AS1332 µH SW FB µF VOUT 1.3V to 3.16V VOUT = x VCON VCON PGND AGND 1 - 19 AS1332 Datasheet - Pin Assignments 4 Pin Assignments Figure Pin Configuration Top View PVIN A1 SW A2 A3 PGND VDD B1 B3 AGND EN C1 C2 C3 FB VCON Datasheet - Ordering Information 11 Ordering Information The device is available as the standard products listed in Table Table Ordering Information Ordering Code AS1332-BWLT Marking ASQW Description 650mA, DC-DC Step-Down for RF Delivery Form Tape and Reel Package 8-pin WL-CSP Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at 18 - 19 AS1332 Datasheet Copyrights Copyright 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 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 life-sustaining 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 Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 19 - 19

PDF Datasheet Preview

Datasheet

AS1332
650mA, Step-Down DC-DC Converter for RF Power Amplifiers
1 General Description

The AS1332 is a step-down DC-DC converter designed to power radiofrequency RF power amplifiers PAs from a single Li-Ion battery. The device also achieves high-performance in mobile phones and similar RF PA applications.

The AS1332 steps down an input voltage of 2.7V to 5.5V to output voltages ranging from 1.3V to 3.16V. Using a VCON analog input, the output voltage is set for controlling power levels and efficiency of the RF PA.

The RF interferences are minimized due to the fixedfrequency PWM operation. The battery consumption is reduced to 0.01µA typ. during shutdown.

Because of the high switching frequencies 2 MHz tiny surface-mount components can be used. Additional to the small size the amount is also small. Only three external components are required, an inductor and two ceramic capacitors.

The AS1332 is available in a 8-pin WL-CSP.
2 Key Features
! PWM Switching Frequency 2MHz ! Single Lithium-Ion Cell Operation 2.7V to 5.5V ! Dynamic Programmable Output Voltage 1.3V to
3.16V ! Maximum load capability of 650mA ! High Efficiency 96% Typ at 3.6VIN, 3.16VOUT at
400mA from internal synchronous rectification ! Current Overload Protection ! Thermal Overload Protection ! Soft Start ! 8-pin WL-CSP
3 Applications

The AS1332 is an ideal solution for cellular phones, hand-held radios, RF PC cards, and battery powered RF devices.

Figure AS1332 - Typical Application Circuit

VIN 2.7V to 5.5V
10 µF

VCON 0.52V to 1.27V

PVIN

AS1332
µH SW

FB µF

VOUT 1.3V to 3.16V

VOUT = x VCON

VCON

PGND

AGND
1 - 19

AS1332

Datasheet - Pin Assignments
4 Pin Assignments

Figure Pin Configuration

Top View

PVIN A1

SW A2 A3 PGND

VDD B1

B3 AGND

EN C1

C2 C3 FB

VCON
Datasheet - Ordering Information
11 Ordering Information

The device is available as the standard products listed in Table
Table Ordering Information
Ordering Code AS1332-BWLT

Marking ASQW

Description 650mA, DC-DC Step-Down for RF

Delivery Form Tape and Reel

Package 8-pin WL-CSP

Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect:

For further information and requests, please contact us or find your local distributor at
18 - 19

AS1332

Datasheet

Copyrights

Copyright 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 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 life-sustaining 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 Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01

For Sales Offices, Distributors and Representatives, please visit:
19 - 19

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 AS1332-BWLT Datasheet file may be downloaded here without warranties.

Datasheet ID: AS1332-BWLT 519595