Datasheet > AS1325-BSTT-50

AS1325-BSTT-50

更新时间： 2024-02-28 11:11:03

品牌	Logo	应用领域
艾迈斯 - AMSCO		转换器
页数	文件大小	规格书
16页	973K
描述
300mA Step-Up DC-DC Converter

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AS1325-BSTT-50 技术参数

是否无铅：	不含铅	生命周期：	Active
Reach Compliance Code：	unknown	风险等级：	5.74
Base Number Matches：	1

AS1325-BSTT-50 数据手册

austriamicrosystems

Data Sheet

AS1325

300mA Step-Up DC-DC Converter

1 General Description

2 Key Features

ꢀ

Fixed Output Voltage:

The AS1325 is a high-efficiency step-up DC-DC con-

verter designed to generate a fixed output voltage of

+3.3V or +5V.

- 3.3V (AS1325-BSTT-33) or 5V (AS1325-BSST-50)

ꢀ

Output Current:

The AS1325 achieves an efficiency of up to 96% and the

minimum input voltage is 1.5V. The AS1325-BSTT-33

delivers up to 300mA output current at the fixed output

voltage of +3.3V (@ 2V VBATT). With the fixed output

voltage of +5V the AS1325-BSST-50 supplies up to

185mA output current (@ 2V VBATT).

- Up to 300mA (AS1325-BSTT-33) @ 2V VBATT

- Up to 185mA (AS1325-BSST-50) @ 2V VBATT

ꢀ

Internal Synchronous Rectifier

Shutdown Mode Supply Current: Less Than 1µA

Efficiency: Up to 96%

In order to save power the AS1325 features a shutdown

mode, where it draws less than 1µA. In shutdown mode

the battery is connected directly to the output enabling

the supply of real-time-clocks.

Minimum Input Voltage: +1.5V

Accurate Shutdown Low-Battery Cutoff Threshold

The AS1325 provides a power-on reset output that goes

high-impedance when the output reaches 90% of its reg-

ulation point.

Battery Input Connected to Pin OUT in Shutdown

Mode for Backup Power

ꢀ

Antiringing Control Minimizes EMI

Ripple Reduction at Light Loads

6-pin SOT23 Package

The SHDNN trip threshold of the AS1325 can be used

as an input voltage detector that disables the device

when the battery voltage falls to a predetermined level.

An internal synchronous rectifier is included.

The AS1325 is available in a 6-pin SOT23 package.

3 Applications

The AS1325 is ideal for low-power applications where

ultra-small size is critical as in medical diagnostic equip-

ment, hand-held instruments, pagers, digital cameras,

remote wireless transmitters, cordless phones, and PC

cards. The device is also perfect as a local supply or as

a battery backup.

Figure 1. Application Diagram

+5.0V Output only

+3.3 or

+5.0V

Output

BATT

OUT

COUT

22µF

100kΩ

+1.5 to +3.3V or

+1.5 to +5.0V

Battery

RESETN

Output

AS1325

10µH

RESETN

CIN

22µF

Off

SHDNN

GND

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