L6981

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38 V, 1.5 A synchronous step-down converter with 20 µA quiescent current

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产品概述

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.

  • 所有功能

    • 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
    阅读更多 阅读较少信息

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EDA符号、封装和3D模型

意法半导体 - L6981

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SIMPLIS models (1)

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版本
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L6981-SIMPLIS-examples-schematics
2023.07 25 Jan 2024
25 Jan 2024
L6981-SIMPLIS-examples-schematics 2023.07

质量与可靠性

产品型号 Marketing Status 包 等级规格 符合RoHS级别 材料声明**
L6981C33DR
批量生产
SO-8 工业 Ecopack2
L6981C50DR
批量生产
SO-8 工业 Ecopack2
L6981CDR
批量生产
SO-8 工业 Ecopack2
L6981N33DR
批量生产
SO-8 工业 Ecopack2
L6981N50DR
批量生产
SO-8 工业 Ecopack2
L6981NDR
批量生产
SO-8 工业 Ecopack2

L6981C33DR

Package:

SO-8

Material Declaration**:

More Info

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981C50DR

Package:

SO-8

Material Declaration**:

More Info

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981CDR

Package:

SO-8

Material Declaration**:

PDF XML
More Info

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981N33DR

Package:

SO-8

Material Declaration**:

More Info

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981N50DR

Package:

SO-8

Material Declaration**:

More Info

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6981NDR

Package:

SO-8

Material Declaration**:

PDF XML
More Info

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。

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