L7987

批量生产
Design Win Education

具有可调电流限值的61 V 3 A异步降压开关稳压器

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样片和购买
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Sales Briefcase

产品概述

描述

The L7987 device is a step-down monolithic switching regulator able to deliver up to 3 A DC. The output voltage adjustability ranges from 0.8 V to VIN. The wide input voltage range and the 100% duty cycle capability meet the fail safe specifications for industrial systems. The embedded switchover feature on the VBIASpin maximizes the efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current accordingly 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 foldback implements an effective constant current protection over the different application conditions. The peak current foldback decreases the stress of the power components in heavy short-circuit condition. The PGOOD open collector output can also implement output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise in low noise applications like sensors with A/D conversion.
  • 所有功能

    • 3 A DC output current
    • 4.5 V to 61 V operating input voltage
    • RDS,ON= 250 mΩ typ.
    • Adjustable fSW(250 kHz - 1.5 MHz)
    • Low IQ-SHD (11 μA typ. from VIN)
    • Low IQ (1 mA typ. - VIN24 V - VOUT3.3 V)
    • Output voltage adjustable from 0.8 V to VIN
    • Synchronization
    • Adjustable soft-start time
    • Adjustable current limitation
    • Low dropout operation (12 μs max.)
    • VBIASimproves efficiency at light load
    • PGOOD open collector output
    • Output voltage sequencing
    • Digital frequency foldback in short-circuit
    • Peak current foldback in short-circuit
    • Auto-recovery thermal shutdown

eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Power Supply Design Tool

SMPS design, by topology, by type and by product
PFC design with analog and digitial control
Supports various PCB configurations
Power Supply
Choose type:
Input Specification
Input Specification
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
V
this option is required
A
this option is required
Output Power: 0

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All tools & software

    • 产品型号
      状态
      描述
      类型
      供应商

      STEVAL-ISA152V1

      批量生产

      基于L7987的3.3 V/3 A高效降压DC-DC转换器(VIN= 4.5 - 60 V)

      DC-DC Converter --
      STEVAL-ISA152V1

      描述:

      基于L7987的3.3 V/3 A高效降压DC-DC转换器(VIN= 4.5 - 60 V)

EDA符号、封装和3D模型

STMicroelectronics - L7987

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符号

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封装

3D model

3D模型

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
L7987
批量生产
HTSSOP16 工业 Ecopack2
L7987TR
批量生产
HTSSOP16 工业 Ecopack2

L7987

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7987TR

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

HTSSOP16

Grade

Industrial

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

样片和购买

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产品型号
Order from distributors
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
L7987TR 无法联系到经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tape and Reel HTSSOP16 - - PHILIPPINES
L7987 无法联系到经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tube HTSSOP16 - - CHINA

L7987TR 批量生产

封装:
HTSSOP16
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L7987TR

ECCN (EU):

NEC

包装类型:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

PHILIPPINES

无法联系到经销商,请联系我们的销售办事处

L7987 批量生产

封装:
HTSSOP16
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L7987

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

CHINA

无法联系到经销商,请联系我们的销售办事处
Swipe or click the button to explore more details Don't show this again

(*) 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