Datasheet > AS1329_13

AS1329_13

更新时间： 2022-05-10 19:31:32

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
20页	862K
描述
Low Vol tage, Micropower, DC-DC Step-Up Conver ters

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AS1329_13 数据手册

AS1329

Low Voltage, Micropower, DC-DC Step-Up Converters

1 General Description

2 Key Features

ꢀ

Low Start-Up Voltage: 0.85V

The AS1329A, AS1329B and the AS1329C are synchronous, fixed

frequency, very high-efficiency DC-DC boost converters capable of

supplying 3.3V at 160mA from a single AA-supply. Compact size and

minimum external parts requirements make these devices perfect for

modern portable devices.

Output Range: 2.5V to 5.0V

Single-Cell Operation

Operating with coils down to 2.2µH

Delivers 160mA @ 3.3V (from Single AA Cell)

Delivers 220mA @ 5.0V (from Two AA Cells)

Delivers 570mA @ 3.3V (from Two AA Cells)

95% Efficiency

High-speed switching frequency (1.2MHz) and internally

compensated PWM current mode design provide highly-reliable DC-

DC conversion, especially when driving white LEDs. The converters

are available as the standard products listed in Table 1.

Table 1. Standard Products

Model

Light Load Switching

Medium Load

Automatic Powersave Operation

AS1329A

High-Speed Fixed-Frequency: 1.2MHz

Internal PMOS Synchronous Rectifier

Automatic Powersave Operation (AS1329A&B)

Continuous Switching at Light Loads (AS1329C)

Logic Controlled Shutdown (< 1µA)

6-pin TSOT-23 Package

AS1329B

AS1329C

Light Load Automatic Powersave Operation

Continuous Switching

The devices contain two internal MOSFET switches: one NMOS

switch and one PMOS synchronous rectifier. Anti-ringing control

circuitry reduces EMI by damping the inductor in discontinuous

mode, and the devices exhibit extremely low quiescent current (<

1µA) in shutdown.

In shutdown mode the battery is connected directly to the output

enabling the supply of real-time-clocks. The AS1329 is available in a

6-pin TSOT-23 package.

3 Applications

The AS1329 is ideal for low-power applications where ultra-small

size is critical as in medical diagnostic equipment, hand-held

instruments, pagers, digital cameras, remote wireless transmitters,

MP3 players, LCD bias supplies, cordless phones, GPS receivers,

and PC cards.

Figure 1. Typical Application Diagram – Single Cell to 3.3V

Synchronous Boost Converter

4.7µH

3.3V

OUT

AA Battery

160mA

VIN

VOUT

10µF

1.02MΩ

AS1329

Off

SHDNN

604kΩ

GND

www.ams.com/DC-DC_Step-Up/AS1329

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型号	品牌	描述	获取价格	数据表
AS1329A	AMSCO	Low Voltage, Micropower, DC-DC Step-Up Converters	获取价格
AS1329A-BTTT	AMSCO	Low Voltage, Micropower, DC-DC Step-Up Converters	获取价格
AS1329B	AMSCO	Low Voltage, Micropower, DC-DC Step-Up Converters	获取价格
AS1329B-BTTT	AMSCO	Low Voltage, Micropower, DC-DC Step-Up Converters	获取价格
AS1329C	AMSCO	Low Voltage, Micropower, DC-DC Step-Up Converters	获取价格
AS1329C-BTTT	AMSCO	Low Voltage, Micropower, DC-DC Step-Up Converters	获取价格