L4973

批量生产
Design Win

3.5 A开关稳压器

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概述
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
开始
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

eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Power Supply Design Tool

SMPS design, by topology, by type and by product
PFC design with analog and digitial control
Supports various PCB configurations
Power Supply
Choose type:
Input Specification
Input Specification
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
V
this option is required
A
this option is required
Output Power: 0

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**:

PDF XML

Marketing Status

批量生产

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4973D5.1-013TR

Package:

SO-20

Material Declaration**:

PDF XML

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

样片和购买

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产品型号
Order from distributors
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 3 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
DIGIKEY WORLDWIDE 1928 1 Buy from Distributor
MOUSER WORLDWIDE 1400 1 Buy from Distributor
Farnell Element14 EUROPE 693 1 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

DIGIKEY

库存

1928

Min.Order

1

地区

WORLDWIDE Buy from Distributor

MOUSER

库存

1400

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

693

Min.Order

1

代理商库存报告日期: 2022-08-06

批量生产
EAR99 NEC Tube SO-20 - - MALAYSIA
L4973D5.1-013TR Available at 1 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
ANGLIA Live EUROPE 14215 1 Buy from Distributor

代理商库存报告日期: 2022-08-02

代理商名称

ANGLIA Live

库存

14215

Min.Order

1

代理商库存报告日期: 2022-08-02

批量生产
EAR99 NEC Tape and Reel SO-20 - - MALAYSIA
L4973V3.3 Available at 2 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
MOUSER WORLDWIDE 990 1 Buy from Distributor
Farnell Element14 EUROPE 492 1 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

MOUSER

库存

990

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

492

Min.Order

1

代理商库存报告日期: 2022-08-06

批量生产
EAR99 NEC Tube PDIP 18 - - MALAYSIA
L4973D3.3-013TR Available at 1 distributors

经销商的可用性L4973D3.3-013TR

代理商名称
地区 库存 最小订购量 第三方链接
AVNET AMERICA 1000 0 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

AVNET

库存

1000

Min.Order

0

地区

AMERICA Buy from Distributor

代理商库存报告日期: 2022-08-06

批量生产
EAR99 NEC Tape and Reel SO-20 - - MALAYSIA
L4973D5.1 Available at 3 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
MOUSER WORLDWIDE 510 1 Buy from Distributor
Farnell Element14 EUROPE 988 1 Buy from Distributor
ANGLIA Live EUROPE 202 1 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

MOUSER

库存

510

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

988

Min.Order

1

ANGLIA Live

库存

202

Min.Order

1

代理商库存报告日期: 2022-08-06

批量生产
EAR99 NEC Tube SO-20 - - MALAYSIA
L4973V5.1 Available at 2 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
Newark Element14 AMERICA 1 0 Buy from Distributor
ANGLIA Live EUROPE 260 20 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

Newark Element14

库存

1

Min.Order

0

地区

AMERICA Buy from Distributor

ANGLIA Live

库存

260

Min.Order

20

代理商库存报告日期: 2022-08-06

批量生产
EAR99 NEC Tube PDIP 18 - - MALAYSIA

L4973D3.3 批量生产

封装:
SO-20
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4973D3.3

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

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
DIGIKEY WORLDWIDE 1928 1 Buy from Distributor
MOUSER WORLDWIDE 1400 1 Buy from Distributor
Farnell Element14 EUROPE 693 1 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

DIGIKEY

库存

1928

Min.Order

1

地区

WORLDWIDE Buy from Distributor

MOUSER

库存

1400

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

693

Min.Order

1

代理商库存报告日期: 2022-08-06

L4973D5.1-013TR 批量生产

封装:
SO-20
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4973D5.1-013TR

ECCN (EU):

NEC

包装类型:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

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
ANGLIA Live EUROPE 14215 1 Buy from Distributor

代理商库存报告日期: 2022-08-02

代理商名称

ANGLIA Live

库存

14215

Min.Order

1

代理商库存报告日期: 2022-08-02

L4973V3.3 批量生产

封装:
PDIP 18
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4973V3.3

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

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
MOUSER WORLDWIDE 990 1 Buy from Distributor
Farnell Element14 EUROPE 492 1 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

MOUSER

库存

990

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

492

Min.Order

1

代理商库存报告日期: 2022-08-06

L4973D3.3-013TR 批量生产

封装:
SO-20
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4973D3.3-013TR

ECCN (EU):

NEC

包装类型:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

经销商的可用性L4973D3.3-013TR

代理商名称
地区 库存 最小订购量 第三方链接
AVNET AMERICA 1000 0 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

AVNET

库存

1000

Min.Order

0

地区

AMERICA Buy from Distributor

代理商库存报告日期: 2022-08-06

L4973D5.1 批量生产

封装:
SO-20
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4973D5.1

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

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
MOUSER WORLDWIDE 510 1 Buy from Distributor
Farnell Element14 EUROPE 988 1 Buy from Distributor
ANGLIA Live EUROPE 202 1 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

MOUSER

库存

510

Min.Order

1

地区

WORLDWIDE Buy from Distributor

Farnell Element14

库存

988

Min.Order

1

ANGLIA Live

库存

202

Min.Order

1

代理商库存报告日期: 2022-08-06

L4973V5.1 批量生产

封装:
PDIP 18
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4973V5.1

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

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
Newark Element14 AMERICA 1 0 Buy from Distributor
ANGLIA Live EUROPE 260 20 Buy from Distributor

代理商库存报告日期: 2022-08-06

代理商名称

Newark Element14

库存

1

Min.Order

0

地区

AMERICA Buy from Distributor

ANGLIA Live

库存

260

Min.Order

20

代理商库存报告日期: 2022-08-06

Swipe or click the button to explore more details Don't show this again

(*) 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