L4972

批量生产

2 A开关稳压器

下载数据手册 Order Direct
概述
Online design
样片和购买
解决方案
文件
CAD资源
工具与软件
质量与可靠性
Partner products
Sales Briefcase

产品概述

描述

The L4972A is a stepdown monolithic power switching regulator delivering 2A at a voltage variable from 5.1 to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4972 include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a Powerdip 16 + 2 + 2 and SO20 large plastic packages and requires few external components. Efficient operation at switching frequencies up to 200KHz allows reduction in the size and cost of external filter component.
  • 所有功能

    • PWM LATCH FOR SINGLE PULSE PER PERIOD
    • UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
    • SWITCHING FREQUENCY UP TO 200KHz
    • VERY HIGH EFFICIENCY
    • CONTINUOUS MODE OPERATION
    • THERMAL SHUTDOWN
    • RESET AND POWER FAIL FUNCTIONS
    • PRECISE 5.1V ± 2% ON CHIP REFERENCE
    • 2A OUTPUT CURRENT
    • 0 TO 90% DUTY CYCLE RANGE
    • 5.1V TO 40V OUTPUT VOLTAGE RANGE
    • INTERNAL CURRENT LIMITING
    • INPUT/OUTPUT SYNC PIN
    • INTERNAL FEED-FORWARD LINE REG.

电路原理图

EDA符号、封装和3D模型

STMicroelectronics - L4972

为您的应用下载所有EDA符号、封装和3D模型,加快您的设计速度。您可以从大量CAD格式中进行选择,以匹配您的设计工具链。

Symbols

符号

Footprints

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**
L4972A
批量生产
PDIP 20 工业 Ecopack1
L4972AD
NRND
SO-20 工业 Ecopack1 (*)
L4972AD013TR
批量生产
SO-20 工业 Ecopack1 (*)

L4972A

Package:

PDIP 20

Material Declaration**:

Marketing Status

批量生产

Package

PDIP 20

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L4972AD

Package:

SO-20

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

L4972AD013TR

Package:

SO-20

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

(**) 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
L4972A Available at 3 distributors

经销商的可用性L4972A

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 318 1 Buy from Distributor
MOUSER WORLDWIDE 1126 1 Buy from Distributor
Farnell Element14 EUROPE 441 1 Buy from Distributor

代理商库存报告日期: 2021-10-24

代理商名称

DIGIKEY

库存

318

Min.Order

1

地区

WORLDWIDE Buy from Distributor

MOUSER

库存

1126

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

441

Min.Order

1

代理商库存报告日期: 2021-10-24

Free Sample Buy Direct
批量生产
EAR99 NEC Tube PDIP 20 - - MALAYSIA 2.2363 / 1k
L4972AD Available at 3 distributors

经销商的可用性L4972AD

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 486 1 Buy from Distributor
RS COMPONENTS EUROPE 10 1 Buy from Distributor
MOUSER WORLDWIDE 471 1 Buy from Distributor

代理商库存报告日期: 2021-10-24

代理商名称

DIGIKEY

库存

486

Min.Order

1

地区

WORLDWIDE Buy from Distributor

RS COMPONENTS

库存

10

Min.Order

1

MOUSER

库存

471

Min.Order

1

地区

WORLDWIDE Buy from Distributor

代理商库存报告日期: 2021-10-24

Buy Direct
NRND
EAR99 NEC Tube SO-20 - - - 2.033 / 1k
L4972AD013TR 无法联系到经销商,请联系我们的销售办事处 Buy Direct
批量生产
EAR99 NEC Tape And Reel SO-20 - - MALAYSIA 2.2363 / 1k

L4972A

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.2363 / 1k

经销商的可用性L4972A

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 318 1 Buy from Distributor
MOUSER WORLDWIDE 1126 1 Buy from Distributor
Farnell Element14 EUROPE 441 1 Buy from Distributor

代理商库存报告日期: 2021-10-24

代理商名称

DIGIKEY

库存

318

Min.Order

1

地区

WORLDWIDE Buy from Distributor

MOUSER

库存

1126

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

441

Min.Order

1

代理商库存报告日期: 2021-10-24

ECCN (EU)

NEC

包装类型

Tube

封装

PDIP 20

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

2.2363 / 1k

Country of Origin

MALAYSIA

L4972AD

供货状态

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.033 / 1k

经销商的可用性L4972AD

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 486 1 Buy from Distributor
RS COMPONENTS EUROPE 10 1 Buy from Distributor
MOUSER WORLDWIDE 471 1 Buy from Distributor

代理商库存报告日期: 2021-10-24

代理商名称

DIGIKEY

库存

486

Min.Order

1

地区

WORLDWIDE Buy from Distributor

RS COMPONENTS

库存

10

Min.Order

1

MOUSER

库存

471

Min.Order

1

地区

WORLDWIDE Buy from Distributor

代理商库存报告日期: 2021-10-24

ECCN (EU)

NEC

包装类型

Tube

封装

SO-20

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

2.033 / 1k

Country of Origin

-

L4972AD013TR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.2363 / 1k

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-20

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

2.2363 / 1k

Country of Origin

MALAYSIA

(*) 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