L4971

批量生产
Design Win

1.5A开关稳压器

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产品概述

描述

The L4971 is a step down monolithic power switching regulator delivering 1.5A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25Ω) to obtain very high efficency and high switching speed.

A switching frequency up to 300KHz is 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 50V cover the majority of today’s applications.

Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, soft-start, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown.

The device is available in plastic dual in line, DIP8 for standard assembly, and SO16W for SMD assembly.

  • 所有功能

    • PROTECTION AGAINST FEEDBACK DISCONNECTION
    • INHIBIT FOR ZERO CURRENT CONSUMPTION
    • SOFT START FUNCTION
    • THERMAL SHUTDOWN
    • ZERO LOAD CURRENT OPERATION
    • VOLTAGE FEEDFORWARD
    • UP TO 1.5A STEP DOWN CONVERTER
    • PRECISE 3.3V (±1%) INTERNAL REFERENCE VOLTAGE
    • OPERATING INPUT VOLTAGE FROM 8V TO 55V
    • SWITCHING FREQUENCY ADJUSTABLE UP TO 300KHz
    • INTERNAL CURRENT LIMITING (PULSE-BY PULSE AND HICCUP MODE)
    • OUTPUT VOLTAGE ADJUSTABLE FROM 3.3V TO 50V

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 Management Design Center

Thermal-electrical Simulators for Components

Signal Conditioning Design Tool

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Power Supply Design Tool

SMPS design, by topology, by type and by product
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太阳能电池充电器

LED Lighting Design Tool

Handles AC-DC and DC-DC design in common topologies
Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
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DC/DC
AC/DC

Digital Power Workbench

Provides a step-by-step optimized design of power section and control loop
Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
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ZVS Totem Pole PFC
FB LLC
Vienna Rectifier
3-Level T-type Converter

Power Tree Designer

Specify input/output power for each node in the tree
Check for consistency
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AC Switches Simulator

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STPOWER Studio

Supports long mission profiles
Provides power loss and temperature graphs
Helps define heatsink thermal properties

Twister Sim

Help select the right ViPOWER Automotive power device
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Supports various PCB configurations

TVS Simulator

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High side Current Sensing

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UHF Link Budget

Enter forward and reverse link characteristics
The tool returns link budget estimate

NFC Tuning Circuit

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The tool returns component values for the desired design targets

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EDA符号、封装和3D模型

STMicroelectronics - L4971

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.

Please select one model supplier :

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**
L4971
批量生产
DIP-8 工业 Ecopack2
L4971D
批量生产
SO-16W 工业 Ecopack1 (*)
L4971D013TR
批量生产
SO-16W 工业 Ecopack1 (*)

L4971

Package:

DIP-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

DIP-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4971D

Package:

SO-16W

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-16W

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

L4971D013TR

Package:

SO-16W

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-16W

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
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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
L4971 Available at distributors

经销商的可用性 L4971

代理商名称
地区 库存 最小订购量 第三方链接

代理商库存报告日期:

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 Tube DIP-8 - - CHINA
L4971D Available at distributors

经销商的可用性 L4971D

代理商名称
地区 库存 最小订购量 第三方链接

代理商库存报告日期:

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 Tube SO-16W - - MALAYSIA
L4971D013TR Available at distributors

经销商的可用性 L4971D013TR

代理商名称
地区 库存 最小订购量 第三方链接

代理商库存报告日期:

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-16W - - MALAYSIA

L4971 批量生产

封装:
DIP-8
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4971

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

CHINA

代理商名称

代理商库存报告日期:

L4971D 批量生产

封装:
SO-16W
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4971D

ECCN (EU):

NEC

包装类型:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

代理商名称

代理商库存报告日期:

L4971D013TR 批量生产

封装:
SO-16W
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L4971D013TR

ECCN (EU):

NEC

包装类型:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MALAYSIA

代理商名称

代理商库存报告日期:

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(*) 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