61 V 3A asynchronous step-down switching regulator with adjustable current limitation for automotive

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  • The A7987 is a step-down monolithic switching regulator that can deliver up to 3 A DC. The adjustable output voltage ranges from 0.8 V to VIN. The wide input voltage range and the almost 100% duty cycle capability meet the fail-safe specifications for industrial systems. The embedded switch-over feature on the VBIAS pin maximizes the efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current in accordance with the nominal output current, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing with digital frequency fold-back implements an effective constant current protection over the different application conditions. The peak current fold-back decreases the stress of the power components in heavy short-circuit conditions. The PGOOD open collector output can also implement the output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise for low noise requirements such as in infotainment applications.

    Key Features

    • 3 A DC output current
    • 4.5 V to 61 V operating input voltage
    • RDS(on) = 250 mΩ typ.
    • Adjustable fsw (250 kHz to 1.5 MHz)
    • Low IQ-SHD (11 µA typ. from VIN)
    • Low IQ (1 mA typ. - VIN 24 V - VOUT 3.3 V)
    • Output voltage adjustable from 0.8 V to VIN
    • Synchronization
    • Adjustable soft-start time
    • Adjustable current limitation
    • Low-dropout operation
    • VBIAS improves efficiency at light load
    • PGOOD open collector output
    • Output voltage sequencing
    • Digital frequency fold-back in short-circuit
    • Auto recovery thermal shutdown
    • Qualified following AEC-Q100 requirements

样片和购买

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A7987TR HTSSOP16 Tape And Reel
批量生产
2 10000 EAR99 - 查看供货情况

Distributor availability ofA7987TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 976 1 Order Now
AVNET AMERICA 1000 0 Order Now
MOUSER WORLDWIDE 818 1 Order Now
RUTRONIK EUROPE 50 2500 Order Now

代理商库存报告日期: 2019-11-15

代理商名称

DIGIKEY

库存

976

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

1000

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

818

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

50

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-15

获取样片

A7987TR

封装

HTSSOP16

包装类型

Tape And Reel

单价(US$)

2.0*

Distributor availability ofA7987TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 976 1 Order Now
AVNET AMERICA 1000 0 Order Now
MOUSER WORLDWIDE 818 1 Order Now
RUTRONIK EUROPE 50 2500 Order Now

代理商库存报告日期: 2019-11-15

代理商名称

DIGIKEY

库存

976

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

1000

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

818

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

50

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-15

供货状态

批量生产

单价(US$)

2

数量

10000

ECCN (US)

EAR99

Country of Origin

-

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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    • 产品型号

      3 A step down DC/DC switching regulator (VIN = 4.5 V to 60 V) based on the A7987

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技术文档

    • 描述 版本 文档大小 操作
      DS12928
      61 V, 3 A asynchronous step-down switching regulator with adjustable current limitation for automotive
      2.0
      1.98 MB
      PDF
      DS12928

      61 V, 3 A asynchronous step-down switching regulator with adjustable current limitation for automotive

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Electric vehicle (EV) ecosystem

      Switching Converters (DC-DC) – Quick Reference Guide

产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
A7987TR
批量生产
HTSSOP16 汽车 Ecopack2

A7987TR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

批量生产

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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