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L5981

批量生产
储存到myST

最高1 A步降开关稳压器

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样片和购买
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工具与软件
质量与可靠性
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产品概述

描述

The L5981 is a step-down switching regulator with a 1.5 A (min.) current limited embedded Power MOSFET, so it is able to deliver in excess of 1 A DC current to the load depending on the application condition. 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 package with an exposed pad allows reducing the RthJA down to approximately 60 °C/W.

  • 所有功能

    • 1 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
    • VFQFPN8 3 mm x 3 mm package
    阅读更多 阅读较少信息

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Resource title
Latest update

产品规格 (1)

Resource title
Latest update
DS5036 1 A step-down switching regulator 7.0
19 Sep 2016
19 Sep 2016
DS5036 1 A step-down switching regulator 7.0

技术文档 (1)

Resource title
Latest update
TN1224 Mounting instructions for SMD (surface mounting device) packages 2.2
20 Jan 2020
20 Jan 2020
TN1224 Mounting instructions for SMD (surface mounting device) packages 2.2

Design Notes & Tips (1)

Resource title
Latest update
DN0011 ST1S03 alternative topology: Using a buck in a negative buck-boost configuration 1.2
16 Jul 2019
16 Jul 2019
DN0011 ST1S03 alternative topology: Using a buck in a negative buck-boost configuration 1.2

手册 (1)

Resource title
Latest update
Electric vehicle (EV) ecosystem 1.1
23 Mar 2020
23 Mar 2020
Electric vehicle (EV) ecosystem 1.1

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L5981

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**
L5981TR
批量生产
QFN-8L P 0.5 mm 工业 Ecopack2

L5981TR

Package:

QFN-8L P 0.5 mm

Material Declaration**:

PDF XML
More Info

Marketing Status

批量生产

Package

QFN-8L P 0.5 mm

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 。

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.

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
L5981TR Available at 2 distributors

经销商的可用性L5981TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 3707 1 马上订购
MOUSER WORLDWIDE 1955 1 马上订购

代理商库存报告日期: 2021-04-16

代理商名称

DIGIKEY

库存

3707

Min.Order

1

地区

WORLDWIDE 马上订购

MOUSER

库存

1955

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2021-04-16

Free Sample Buy Direct
批量生产
EAR99 NEC Tape And Reel QFN-8L P 0.5 mm -40 150 PHILIPPINES 0.918 / 1k

L5981TR

供货状态

批量生产

ECCN (US)

EAR99
更多信息

Budgetary Price (US$)*/Qty

0.918 / 1k

经销商的可用性L5981TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 3707 1 马上订购
MOUSER WORLDWIDE 1955 1 马上订购

代理商库存报告日期: 2021-04-16

代理商名称

DIGIKEY

库存

3707

Min.Order

1

地区

WORLDWIDE 马上订购

MOUSER

库存

1955

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2021-04-16

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

QFN-8L P 0.5 mm

Operating Temperature (°C)

(最小值)

-40

(最大值)

150

Budgetary Price (US$)* / Qty

0.918 / 1k

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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