Datasheet > AS7620

AS7620

更新时间： 2024-02-08 08:07:01

品牌	Logo	应用领域
艾迈斯 - AMSCO		转换器监控
页数	文件大小	规格书
2页	622K
描述
500mA Hysteretic High Voltage Step-Down Converter with Dual Power Monitor

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AS7620 技术参数

是否Rohs认证：	符合	生命周期：	Contact Manufacturer
Reach Compliance Code：	unknown	风险等级：	5.84

AS7620 数据手册

Data Sheet

AS7620

500mA Hysteretic High Voltage Step-Down Converter

with Dual Power Monitor

1 General Description

2 Key Features

ꢀ

Low quiescent current for efficient partial load

operation

The AS7620 is an easy-to-use, high-efficiency, high-

voltage, hysteretic step-down DC-DC converter,

operating in asynchronous mode. Its low-power

architecture extends hold-up time in battery-backed and

critical applications where maximum up-time over a wide

input supply voltage range is needed, while still

providing for high efficiencies of up to 90% during peak

current demands.

ꢀ

Wide Supply Voltage Range, 3.6V to 32V

100% Duty Cycle extends operating range

Pin-programmable cycle-by-cycle current limit

Integrated PMOS eliminates bootstrap capacitor

Resistor-programmable Early Power Fail Warning

Input

Although the AS7620 is optimized for 24V applications

found in industrial and medical systems, its ability to

support 100% Duty Cycle makes the AS7620 ideal for

applications demanding maximum up-time and soft

power fail behavior. In combination with low idle current

of only 30µA, on-demand switching reduces operating

current at low load currents.

ꢀ

Power-Good Flag

Thermal Shutdown

Fixed 3.3V and adjustable output (1.2V to VIN)

Small 4x4mm 12-Lead MLPQ Enhanced Power

Package

By selecting an appropriate inductor value, operating

current can be lowered and switching frequencies tuned

to certain load conditions.

ꢀ

Specified from -40ºC to +125ºC junction and 85ºC

maximum ambient temperatures

A pin-strapped current limit input minimizes inductor

peak current and thus inductor size and cost for any

given application.

3 Applications

The AS7620 is suitable for Industrial 24VDC

The device further includes output short-circuit

protection and thermal shutdown. In shutdown mode,

only 1µA (typ) of current is consumed.

applications like PLCs, robotics; Home Security and

Building Control applications; Solid-state utility meters;

Signage and LED column power; and Sensor interfaces.

Figure 1. Block Diagram

VIN

LDO

Level

Temp

Shifter

Hysteretic

Controller

SHDN

Soft-Start

SENSE

ILIM

REF

AS7620

VEPF

www.austriamicrosystems.com

Revision 1.00

1 - 15

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与AS7620相关器件

型号	品牌	获取价格	描述	数据表
AS7620_1	AMSCO	获取价格	500mA Hysteretic High Voltage Step-Down Converter with Dual Power Monitor
AS7620_13	AMSCO	获取价格	650mA, Ul t ra low Ripple Step Down DC/DC Conver ter
AS7620A-BQFT	AMSCO	获取价格	500mA Hysteretic High Voltage Step-Down Converter with Dual Power Monitor
AS7620B-BQFT	AMSCO	获取价格	500mA Hysteretic High Voltage Step-Down Converter with Dual Power Monitor
AS7620-BQFT	AMSCO	获取价格	650mA, Ul t ra low Ripple Step Down DC/DC Conver ter
AS7660	ETC	获取价格	DC-to-DC Voltage Converter
AS7660G	ETC	获取价格	DC-to-DC Voltage Converter
AS7660GP	ETC	获取价格	DC-to-DC Voltage Converter
AS7660GS	ETC	获取价格	DC-to-DC Voltage Converter
AS7660GZ	ETC	获取价格	DC-to-DC Voltage Converter

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