L6981

批量生产
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38 V, 1.5 A synchronous step-down converter with low quiescent current

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样片和购买
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质量与可靠性
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Product overview

描述

The L6981 is an easy to use synchronous monolithic step-down regulator capable of delivering up to 1.5 A DC to the load. The wide input voltage range makes the device suitable for a broad range of applications. The L6981 is based on a peak current mode architecture and is packaged in an SO8 with internal compensation, thus minimizing design complexity and size. The L6981 is available both in low consumption mode (LCM) and low noise mode (LNM) versions. LCM maximizes the efficiency at light-load with controlled output voltage ripple so the device is suitable for battery-powered applications. LNM makes the switching frequency constant and minimizes the output voltage ripple for light-load operations, meeting the specification for low noise sensitive applications.
The EN pin provides enable/disable functionality. The typical shutdown current is 2 µA when disabled. As soon as the EN pin is pulled up the device is enabled and the internal 1.3 ms soft-start takes place. Pulse-by-pulse current sensing on both power elements implements an effective constant current protection and thermal shutdown prevents thermal run-away.
  • All features

    • 3.5 V to 38 V operating input voltage
    • Output voltage from 0.85 V to VIN
    • 1.5 A DC output current
    • Internal compensation network
    • Two different versions: LCM for high efficiency at light-loads and LNM for noise sensitive applications
    • 2 μA shutdown current
    • Internal soft-start
    • Enable
    • Overvoltage protection
    • Output voltage sequencing
    • Thermal protection
    • Synchronization to external clock for LNM devices
    • SO8 package

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特别推荐

All tools & software

    • 产品型号
      状态
      描述
      类型
      供应商

      STEVAL-L6981CDR

      批量生产

      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on the L6981CDR

      电源和功率转换器解决方案评估板 --
      STEVAL-L6981CDR

      描述:

      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on the L6981CDR

      STEVAL-L6981NDR

      批量生产

      38 V, 3 A synchronous step-down switching regulator evaluation board based on the L6981NDR

      电源和功率转换器解决方案评估板 --
      STEVAL-L6981NDR

      描述:

      38 V, 3 A synchronous step-down switching regulator evaluation board based on the L6981NDR

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L6981

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

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**
L6981C33DR
预览
SO-8 工业 Ecopack2
L6981C50DR
预览
SO-8 工业 Ecopack2
L6981CDR
批量生产
SO-8 工业 Ecopack2
L6981N33DR
预览
SO-8 工业 Ecopack2
L6981N50DR
预览
SO-8 工业 Ecopack2
L6981NDR
批量生产
SO-8 工业 Ecopack2

L6981C33DR

Package:

SO-8

Material Declaration**:

Marketing Status

预览

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981C50DR

Package:

SO-8

Material Declaration**:

Marketing Status

预览

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981CDR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981N33DR

Package:

SO-8

Material Declaration**:

Marketing Status

预览

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981N50DR

Package:

SO-8

Material Declaration**:

Marketing Status

预览

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981NDR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

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

产品型号
从分销商订购
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
L6981C50DR 无法联系到经销商,请联系我们的销售办事处
预览
EAR99 NEC Tape And Reel SO-8 - - CHINA
L6981N50DR 无法联系到经销商,请联系我们的销售办事处
预览
EAR99 NEC Tape And Reel SO-8 - - CHINA
L6981N33DR 无法联系到经销商,请联系我们的销售办事处
预览
EAR99 NEC Tape And Reel SO-8 - - CHINA
L6981CDR 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 SO-8 - - CHINA 1.0 / 1k
L6981NDR 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 SO-8 - - CHINA 1.0 / 1k
L6981C33DR 无法联系到经销商,请联系我们的销售办事处
预览
EAR99 NEC Tape And Reel SO-8 - - CHINA

L6981C50DR

供货状态

预览

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

L6981N50DR

供货状态

预览

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

L6981N33DR

供货状态

预览

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

L6981CDR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.0 / 1k

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

1.0 / 1k

Country of Origin

CHINA

L6981NDR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.0 / 1k

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

1.0 / 1k

Country of Origin

CHINA

L6981C33DR

供货状态

预览

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-8

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

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