3 A step-down switching regulator

下载数据手册

Sample and Buy from our eStore

样片和购买
概述
工具与软件
资源
解决方案
质量与可靠性
Sales Briefcase
eDesignSuite
开始
样片和购买
Partner products
  • The L5987 is a step-down switching regulator with a 3.5 A (minimum) current limited embedded Power MOSFET, so it is able to deliver an up to 3 A current to the load depending on the application conditions.

    The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN. Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus.
    Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
    The VFQFPN8 and the HSOP packages with an exposed pad allow reducing the RthJAdown to 60 °C/W and 40 °C/W respectively.

    Key Features

    • 3 A DC output current
    • 2.9 V to 18 V input voltage
    • Output voltage adjustable from 0.6 V
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and inhibit
    • Low dropout operation: 100% duty cycle
    • Voltage feedforward
    • Zero load current operation
    • Overcurrent and thermal protection
    • VFQFPN 3 x 3 -8L and HSOP8 package

电路原理图

下载 下载

样片和购买

产品型号
封装
包装类型
供货状态
预算价格(US$)
数量
ECCN (US)
Country of Origin
从分销商订购
从ST订购
L5987TR DFN8 3x3 Tape And Reel
批量生产
0.995 10000 EAR99 PHILIPPINES 查看供货情况

Distributor availability ofL5987TR

代理商名称
地区 库存 最小订购量 Third party link
ARROW EUROPE 4000 0 Order Now
MOUSER WORLDWIDE 3996 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

ARROW

库存

4000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

3996

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-18

获取样片
L5987ATR PowerSO-8 Tape And Reel
批量生产
0.995 10000 EAR99 CHINA 查看供货情况

Distributor availability ofL5987ATR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2034 1 Order Now
Newark Element14 AMERICA 625 0 Order Now
MOUSER WORLDWIDE 1837 1 Order Now
Farnell Element14 EUROPE 1273 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

DIGIKEY

库存

2034

Min.Order

1

地区

WORLDWIDE Order Now

Newark Element14

库存

625

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

1837

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1273

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-18

获取样片
L5987A PowerSO-8 Tube
批量生产
0.995 10000 EAR99 CHINA 查看供货情况

Distributor availability ofL5987A

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now
MOUSER WORLDWIDE 1999 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

DIGIKEY

库存

2000

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1999

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-18

立即购买

L5987TR

封装

DFN8 3x3

包装类型

Tape And Reel

单价(US$)

0.995*

Distributor availability ofL5987TR

代理商名称
地区 库存 最小订购量 Third party link
ARROW EUROPE 4000 0 Order Now
MOUSER WORLDWIDE 3996 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

ARROW

库存

4000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

3996

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-18

供货状态

批量生产

单价(US$)

0.995

数量

10000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

L5987ATR

封装

PowerSO-8

包装类型

Tape And Reel

单价(US$)

0.995*

Distributor availability ofL5987ATR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2034 1 Order Now
Newark Element14 AMERICA 625 0 Order Now
MOUSER WORLDWIDE 1837 1 Order Now
Farnell Element14 EUROPE 1273 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

DIGIKEY

库存

2034

Min.Order

1

地区

WORLDWIDE Order Now

Newark Element14

库存

625

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

1837

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1273

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-18

供货状态

批量生产

单价(US$)

0.995

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

L5987A

封装

PowerSO-8

包装类型

Tube

单价(US$)

0.995*

Distributor availability ofL5987A

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now
MOUSER WORLDWIDE 1999 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

DIGIKEY

库存

2000

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1999

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-18

供货状态

批量生产

单价(US$)

0.995

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 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

精选 产品

适合您的资源

评估工具

    • 产品型号

      3 A step-down switching regulator demonstration board based on the L5987, L5987A

      3 A step-down switching regulator evaluation board based on the L5987

00 选择要下载的文档

技术文档

    • 描述 版本 文档大小 操作
      DS5917
      3 A step-down switching regulator
      4.0
      1,002.57 KB
      PDF
      DS5917

      3 A step-down switching regulator

    • 描述 版本 文档大小 操作
      DN0011
      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration
      1.2
      361.3 KB
      PDF
      DN0011

      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration

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**
L5987A
批量生产
PowerSO-8 工业 Ecopack2
L5987ATR
批量生产
PowerSO-8 工业 Ecopack2
L5987TR
批量生产
DFN8 3x3 工业 Ecopack2

L5987A

Package:

PowerSO-8

Material Declaration**:

Marketing Status

批量生产

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5987ATR

Package:

PowerSO-8

Material Declaration**:

Marketing Status

批量生产

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5987TR

Package:

DFN8 3x3

Material Declaration**:

Marketing Status

批量生产

Package

DFN8 3x3

Grade

Industrial

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.

eDesignSuite

转换器

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.