L4973

批量生产

3.5 A开关稳压器

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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 L4973 is a step down monolithic power switching regulator delivering 3.5A at fixed voltages of 3.3V or 5.1V and using a simple external divider output adjustable voltage up to 50V. Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical RDS(on) of 0.15Ω) to obtain very high efficiency and very fast switching times. Switching frequency up to 300KHz are achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 40V cover the majority of the today applications. Features of this new generation of DC-DC converter includes pulse by pulse current limit, hiccup mode for output short circuit protection, voltage feed forward regulation, soft start, input/output synchronization, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown. Packages available are in plastic dual in line, DIP- 18 (12+3+3) for standard assembly, and SO20 (12+4+4) for SMD assembly.
  • 所有功能

    • Inhibit for zero current consumption (100mA at VCC= 24V)
    • Input/output synchronization function
    • Thermal shutdown
    • Protection against feedback disconnection
    • Soft start function
    • Output over voltage protection
    • Internal current limiting (pulse by pulse and HICCUP mode)
    • Zero load current operation (min 1mA)
    • Up to 3.5A step down converter
    • 3.3V and 5.1V (±1%) fixed output, and adjustable outputs from: 0.5V to 50V (3.3 type)5.1V to 50V (5.1 type)
    • Operating input voltage from 8V to 55V
    • Voltage feed forward
    • Precise 5.1V (1.5%) reference voltage externally available
    • Frequency adjustable up to 300kHz

电路原理图

EDA符号、封装和3D模型

STMicroelectronics - L4973

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**
L4973D3.3
批量生产
SO-20 工业 Ecopack2
L4973D3.3-013TR
批量生产
SO-20 工业 Ecopack1 (*)
L4973D5.1
批量生产
SO-20 工业 Ecopack2
L4973D5.1-013TR
批量生产
SO-20 工业 Ecopack2
L4973V3.3
批量生产
PDIP 18 工业 Ecopack1
L4973V5.1
批量生产
PDIP 18 工业 Ecopack1

L4973D3.3

Package:

SO-20

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4973D3.3-013TR

Package:

SO-20

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

L4973D5.1

Package:

SO-20

Material Declaration**:

Marketing Status

批量生产

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4973D5.1-013TR

Package:

SO-20

Material Declaration**:

Marketing Status

批量生产

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4973V3.3

Package:

PDIP 18

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PDIP 18

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L4973V5.1

Package:

PDIP 18

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PDIP 18

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

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
L4973D3.3 Available at 1 distributors

经销商的可用性L4973D3.3

代理商名称
地区 库存 最小订购量 第三方链接
RS COMPONENTS EUROPE 15 1 Buy from Distributor

代理商库存报告日期: 2021-10-11

代理商名称

RS COMPONENTS

库存

15

Min.Order

1

代理商库存报告日期: 2021-10-11

批量生产
EAR99 NEC Tube SO-20 - - MALAYSIA 1.9921 / 1k
L4973D5.1-013TR Available at 2 distributors

经销商的可用性L4973D5.1-013TR

代理商名称
地区 库存 最小订购量 第三方链接
MOUSER WORLDWIDE 5 1 Buy from Distributor
ANGLIA Live EUROPE 20145 1 Buy from Distributor

代理商库存报告日期: 2021-10-15

代理商名称

MOUSER

库存

5

Min.Order

1

地区

WORLDWIDE Buy from Distributor

ANGLIA Live

库存

20145

Min.Order

1

代理商库存报告日期: 2021-10-15

Buy Direct
批量生产
EAR99 NEC Tape And Reel SO-20 - - MALAYSIA 2.0471 / 1k
L4973V3.3 Available at 3 distributors

经销商的可用性L4973V3.3

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 308 1 Buy from Distributor
MOUSER WORLDWIDE 1 1 Buy from Distributor
Farnell Element14 EUROPE 948 1 Buy from Distributor

代理商库存报告日期: 2021-10-15

代理商名称

DIGIKEY

库存

308

Min.Order

1

地区

WORLDWIDE Buy from Distributor

MOUSER

库存

1

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

948

Min.Order

1

代理商库存报告日期: 2021-10-15

Buy Direct
批量生产
EAR99 NEC Tube PDIP 18 - - MALAYSIA 1.8623 / 1k
L4973D3.3-013TR 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-20 - - MALAYSIA 1.9921 / 1k
L4973D5.1 Available at 2 distributors

经销商的可用性L4973D5.1

代理商名称
地区 库存 最小订购量 第三方链接
RS COMPONENTS EUROPE 159 1 Buy from Distributor
ANGLIA Live EUROPE 207 1 Buy from Distributor

代理商库存报告日期: 2021-10-11

代理商名称

RS COMPONENTS

库存

159

Min.Order

1

ANGLIA Live

库存

207

Min.Order

1

代理商库存报告日期: 2021-10-11

批量生产
EAR99 NEC Tube SO-20 - - MALAYSIA 2.0471 / 1k
L4973V5.1 Available at 6 distributors

经销商的可用性L4973V5.1

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 600 1 Buy from Distributor
RS COMPONENTS EUROPE 181 1 Buy from Distributor
Newark Element14 AMERICA 2 0 Buy from Distributor
MOUSER WORLDWIDE 999 1 Buy from Distributor
Farnell Element14 EUROPE 986 1 Buy from Distributor
ANGLIA Live EUROPE 560 20 Buy from Distributor

代理商库存报告日期: 2021-10-15

代理商名称

DIGIKEY

库存

600

Min.Order

1

地区

WORLDWIDE Buy from Distributor

RS COMPONENTS

库存

181

Min.Order

1

Newark Element14

库存

2

Min.Order

0

地区

AMERICA Buy from Distributor

MOUSER

库存

999

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

986

Min.Order

1

ANGLIA Live

库存

560

Min.Order

20

代理商库存报告日期: 2021-10-15

Free Sample Buy Direct
批量生产
EAR99 NEC Tube PDIP 18 - - MALAYSIA 1.9558 / 1k

L4973D3.3

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.9921 / 1k

经销商的可用性L4973D3.3

代理商名称
地区 库存 最小订购量 第三方链接
RS COMPONENTS EUROPE 15 1 Buy from Distributor

代理商库存报告日期: 2021-10-11

代理商名称

RS COMPONENTS

库存

15

Min.Order

1

代理商库存报告日期: 2021-10-11

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

1.9921 / 1k

Country of Origin

MALAYSIA

L4973D5.1-013TR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.0471 / 1k

经销商的可用性L4973D5.1-013TR

代理商名称
地区 库存 最小订购量 第三方链接
MOUSER WORLDWIDE 5 1 Buy from Distributor
ANGLIA Live EUROPE 20145 1 Buy from Distributor

代理商库存报告日期: 2021-10-15

代理商名称

MOUSER

库存

5

Min.Order

1

地区

WORLDWIDE Buy from Distributor

ANGLIA Live

库存

20145

Min.Order

1

代理商库存报告日期: 2021-10-15

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

2.0471 / 1k

Country of Origin

MALAYSIA

L4973V3.3

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.8623 / 1k

经销商的可用性L4973V3.3

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 308 1 Buy from Distributor
MOUSER WORLDWIDE 1 1 Buy from Distributor
Farnell Element14 EUROPE 948 1 Buy from Distributor

代理商库存报告日期: 2021-10-15

代理商名称

DIGIKEY

库存

308

Min.Order

1

地区

WORLDWIDE Buy from Distributor

MOUSER

库存

1

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

948

Min.Order

1

代理商库存报告日期: 2021-10-15

ECCN (EU)

NEC

包装类型

Tube

封装

PDIP 18

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

1.8623 / 1k

Country of Origin

MALAYSIA

L4973D3.3-013TR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.9921 / 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

1.9921 / 1k

Country of Origin

MALAYSIA

L4973D5.1

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.0471 / 1k

经销商的可用性L4973D5.1

代理商名称
地区 库存 最小订购量 第三方链接
RS COMPONENTS EUROPE 159 1 Buy from Distributor
ANGLIA Live EUROPE 207 1 Buy from Distributor

代理商库存报告日期: 2021-10-11

代理商名称

RS COMPONENTS

库存

159

Min.Order

1

ANGLIA Live

库存

207

Min.Order

1

代理商库存报告日期: 2021-10-11

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

2.0471 / 1k

Country of Origin

MALAYSIA

L4973V5.1

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.9558 / 1k

经销商的可用性L4973V5.1

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 600 1 Buy from Distributor
RS COMPONENTS EUROPE 181 1 Buy from Distributor
Newark Element14 AMERICA 2 0 Buy from Distributor
MOUSER WORLDWIDE 999 1 Buy from Distributor
Farnell Element14 EUROPE 986 1 Buy from Distributor
ANGLIA Live EUROPE 560 20 Buy from Distributor

代理商库存报告日期: 2021-10-15

代理商名称

DIGIKEY

库存

600

Min.Order

1

地区

WORLDWIDE Buy from Distributor

RS COMPONENTS

库存

181

Min.Order

1

Newark Element14

库存

2

Min.Order

0

地区

AMERICA Buy from Distributor

MOUSER

库存

999

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

986

Min.Order

1

ANGLIA Live

库存

560

Min.Order

20

代理商库存报告日期: 2021-10-15

ECCN (EU)

NEC

包装类型

Tube

封装

PDIP 18

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

1.9558 / 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