A7987

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

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样片和购买
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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.

    主要特性

    • 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

产品型号
封装
包装类型
供货状态
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
从ST订购
从分销商订购
A7987TR HTSSOP16 Tape And Reel
批量生产
EAR99 PHILIPPINES 2.0 / 1k 获取样片 查看供货情况

...的经销商可用性A7987TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 746 1 马上订购
RS COMPONENTS EUROPE 200 1 马上订购
AVNET AMERICA 1000 0 马上订购
MOUSER WORLDWIDE 63 1 马上订购
Farnell Element14 EUROPE 134 1 马上订购
RUTRONIK EUROPE 50 2500 马上订购

代理商库存报告日期: 2020-05-27

代理商名称

DIGIKEY

库存

746

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

200

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

1000

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

63

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

134

Min.Order

1

地区

EUROPE 马上订购

RUTRONIK

库存

50

Min.Order

2500

地区

EUROPE 马上订购

代理商库存报告日期: 2020-05-27

A7987TR

封装

HTSSOP16

包装类型

Tape And Reel

Budgetary Price (US$)*/Qty

2.0 / 1k

...的经销商可用性A7987TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 746 1 马上订购
RS COMPONENTS EUROPE 200 1 马上订购
AVNET AMERICA 1000 0 马上订购
MOUSER WORLDWIDE 63 1 马上订购
Farnell Element14 EUROPE 134 1 马上订购
RUTRONIK EUROPE 50 2500 马上订购

代理商库存报告日期: 2020-05-27

代理商名称

DIGIKEY

库存

746

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

200

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

1000

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

63

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

134

Min.Order

1

地区

EUROPE 马上订购

RUTRONIK

库存

50

Min.Order

2500

地区

EUROPE 马上订购

代理商库存报告日期: 2020-05-27

供货状态

批量生产

Budgetary Price (US$)* / Qty

2.0 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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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技术文档

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产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
A7987TR
批量生产
HTSSOP16 Automotive Ecopack2

A7987TR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

批量生产

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

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