Datasheet > A5975AD

A5975AD

更新时间： 2023-12-20 18:46:35

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		开关稳压器
页数	文件大小	规格书
50页	1741K
描述
最高2.5 A的降压开关稳压器，用于汽车应用

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A5975AD 数据手册

A5975AD

Up to 2.5 A step-down switching regulator for automotive

applications

Datasheet - production data

 Protection against feedback disconnection

 Thermal shutdown

Application

 Dedicated to automotive applications

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Description

The A5975AD is a step-down monolithic power

switching regulator with a minimum switch current

Features

 Qualified following the AEC-Q100

limit of 3.1 A, it is therefore able to deliver up to

2.5 A DC current to the load depending on the

application conditions. The output voltage can be

set from 1.235 V to 35 V. The high current level is

also achieved thanks to a HSOP8 package with

requirements (see PPAP for more details)

 2.5 A DC output current

 Operating input voltage from 4 V to 36 V

 3.3 V / (±2%) reference voltage

 Output voltage adjustable from 1.235 V to 35 V

 Low dropout operation: 100% duty cycle

 500 kHz internally fixed frequency

 Voltage feed-forward

exposed frame, that allows to reduce the R

THJ-A

down to approximately 40 °C/W. The device uses

an internal P-channel DMOS transistor (with a

typical R

of 250 m) as switching element

DS(on)

to minimize the size of the external components.

An internal oscillator fixes the switching frequency

at 500 kHz. Having a minimum input voltage of

only 4 V, it fits automotive applications requiring

device operation even in cold crank conditions.

Pulse-by-pulse current limit with the internal

frequency modulation offers an effective constant

current short-circuit protection.

 Zero load current operation

 Internal current limiting

 Inhibit for zero current consumption

 Synchronization

Figure 1. Application schematic

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March 2021

DocID018761 Rev 2

1/50

This is information on a product in full production.

www.st.com

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