Datasheet > AS1341-BTDT-1K

AS1341-BTDT-1K

更新时间： 2024-09-24 12:56:03

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
18页	990K
描述
650mA, Ul t ra low Ripple Step Down DC/DC Conver ter

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AS1341-BTDT-1K 技术参数

生命周期：	Active	Reach Compliance Code：	unknown
风险等级：	5.74	Base Number Matches：	1

AS1341-BTDT-1K 数据手册

AS1341

650mA, Ultra low Ripple Step Down DC/DC Converter

1 General Description

The AS1341 is a high-efficiency step-down converter with adjustable

output voltages from 1.25V to VIN using supply voltages of up to

20V.

2 Key Features

ꢀ

Output Voltages: Fixed 5V or Adjustable

Input Voltage Range: 4.5V to 20V

Output Current: Up to 600mA

1.25V Lowest Output Voltage

Efficiency: up to 96%

An integrated current-limited 0.4Ω MOSFET delivers load currents

up to 600mA.

The AS1341 also includes a 100% duty cycle LDO mode with a low

dropout of only 250mV for high efficiency if input voltages is in the

range of the output voltage.

Quiescent Supply Current: 12µA

Power-OK Output

The AS1341 has a low quiescent current (12µA) to improve light-

load efficiency and minimize battery use, and draws only 0.8µA in

shutdown mode.

Internal 0.4Ω P-Channel MOSFET

Shutdown Current: 0.8µA

High switching frequencies (up to 200kHz) allow the use of small

surface-mount inductors and output capacitors.

The device is available in a TDFN-8 3x3mm pin package.

100% Maximum Duty Cycle for Low Dropout

Current-Limited Architecture

Thermal Shutdown

TDFN-8 3x3mm Package

3 Applications

The device is ideal for notebook computers, distributed power

systems, keep-alive supplies, and any other battery-operated,

portable device.

Figure 1. AS1341 - Typical Application

V_IN

4.5V to 20V

V_OUT= 5V

COUT

SHDNN

AS1341

OUT

ILIMIT

RPULL

POK

GND

Indicates High-Power Trace

www.ams.com/DC-DC_Step-Up/AS1341

Revision 1.09

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