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  • The L4975A is a stepdown monolithic power switching regulator delivering 5A 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 L4975A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components. Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter component.

    主要特性

    • UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
    • INPUT/OUTPUT SYNC PIN
    • VERY HIGH EFFICIENCY
    • PWM LATCH FOR SINGLE PULSE PER PERIOD
    • THERMAL SHUTDOWN
    • SWITCHING FREQUENCY UP TO 500KHz
    • CONTINUOUS MODE OPERATION
    • RESET AND POWER FAIL FUNCTIONS
    • PRECISE 5.1V ± 2% ON CHIP REFERENCE
    • 5A OUTPUT CURRENT
    • 0 TO 90% DUTY CYCLE RANGE
    • 5.1V TO 40V OUTPUT VOLTAGE RANGE
    • INTERNAL CURRENT LIMITING
    • SOFT START
    • INTERNAL FEED-FORWARD LINE REG.

电路原理图

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样片和购买

产品型号
封装
包装类型
供货状态
预算价格(US$)
数量
ECCN (US)
Country of Origin
从分销商订购
从ST订购
L4975A MW 15L Tube
Active
6.798 10000 EAR99 MOROCCO 查看供货情况

Distributor availability ofL4975A

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 499 1 Order Now
RS COMPONENTS EUROPE 281 1 Order Now
ARROW EUROPE 425 0 Order Now
Newark Element14 AMERICA 9 0 Order Now
ARROW AMERICA 471 500 Order Now
MOUSER WORLDWIDE 77 1 Order Now
Farnell Element14 EUROPE 123 1 Order Now
ANGLIA Live EUROPE 1675 1 Order Now

代理商库存报告日期: 2019-08-22

代理商名称

DIGIKEY

库存

499

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

281

Min.Order

1

地区

EUROPE Order Now

ARROW

库存

425

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

9

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

471

Min.Order

500

地区

AMERICA Order Now

MOUSER

库存

77

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

123

Min.Order

1

地区

EUROPE Order Now

ANGLIA Live

库存

1675

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-08-22

立即购买

L4975A

封装

MW 15L

包装类型

Tube

Unit Price (US$)

6.798*

Distributor availability ofL4975A

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 499 1 Order Now
RS COMPONENTS EUROPE 281 1 Order Now
ARROW EUROPE 425 0 Order Now
Newark Element14 AMERICA 9 0 Order Now
ARROW AMERICA 471 500 Order Now
MOUSER WORLDWIDE 77 1 Order Now
Farnell Element14 EUROPE 123 1 Order Now
ANGLIA Live EUROPE 1675 1 Order Now

代理商库存报告日期: 2019-08-22

代理商名称

DIGIKEY

库存

499

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

281

Min.Order

1

地区

EUROPE Order Now

ARROW

库存

425

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

9

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

471

Min.Order

500

地区

AMERICA Order Now

MOUSER

库存

77

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

123

Min.Order

1

地区

EUROPE Order Now

ANGLIA Live

库存

1675

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-08-22

供货状态

Active

Unit Price (US$)

6.798

数量

10000

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
L4975A
Active
MW 15L 工业 Ecopack1

L4975A

Package:

MW 15L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MW 15L

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.