Up to 1.5 A step down switching regulator

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  • The L5973AD is a step down monolithic power switching regulator with a switch current limit of 2A so it is able to deliver more than 1.5 A DC current to the load depending on the application conditions.

    The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to an SO8 package with exposed frame, that allows to reduce the RthJA down to approximately 40 °C/W.
    The device uses an internal P-Channel D-MOS transistor (with a typical of 200 mΩ) as switching element to avoid the use of bootstrap capacitor and guarantee high efficiency.
    An internal oscillator fixes the switching frequency at 500 kHz to minimize the size of external components.
    Having a minimum input voltage of 4 V only, it is particularly suitable for 5 V bus, available in all computer related applications.
    Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection.

    主要特性

    • Inhibit for zero current consumption
    • Internal current limiting
    • Protection against feedback disconnection
    • Synchronization
    • Thermal shutdown
    • Voltage feedforward
    • 500 kHz Internally fixed frequency
    • 2 A Internal switch
    • 3.3 V / (±2 %) reference voltage
    • Operating input voltage from 4 V to 36 V
    • Low dropout operation: 100 % duty cycle
    • Zero load current operation
    • Output voltage adjustable from 1.235 V to 35 V

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)
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从分销商订购
从ST订购
L5973AD PowerSO-8 Tube
批量生产
0.991 10000 EAR99 - 查看供货情况

Distributor availability ofL5973AD

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2228 1 Order Now
RS COMPONENTS EUROPE 1285 5 Order Now
AVNET AMERICA 9284 0 Order Now
Newark Element14 AMERICA 10 0 Order Now
ARROW AMERICA 399 2000 Order Now
MOUSER WORLDWIDE 3871 1 Order Now
Farnell Element14 EUROPE 8783 1 Order Now
ANGLIA Live EUROPE 5414 1 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

2228

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

1285

Min.Order

5

地区

EUROPE Order Now

AVNET

库存

9284

Min.Order

0

地区

AMERICA Order Now

Newark Element14

库存

10

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

399

Min.Order

2000

地区

AMERICA Order Now

MOUSER

库存

3871

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

8783

Min.Order

1

地区

EUROPE Order Now

ANGLIA Live

库存

5414

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

立即购买
L5973ADTR PowerSO-8 Tape And Reel
批量生产
0.991 10000 EAR99 - 查看供货情况

Distributor availability ofL5973ADTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 4474 1 Order Now
ARROW EUROPE 10000 0 Order Now
MOUSER WORLDWIDE 4217 1 Order Now
RUTRONIK EUROPE 17500 2500 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

4474

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

10000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

4217

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

17500

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

获取样片

L5973AD

封装

PowerSO-8

包装类型

Tube

单价(US$)

0.991*

Distributor availability ofL5973AD

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2228 1 Order Now
RS COMPONENTS EUROPE 1285 5 Order Now
AVNET AMERICA 9284 0 Order Now
Newark Element14 AMERICA 10 0 Order Now
ARROW AMERICA 399 2000 Order Now
MOUSER WORLDWIDE 3871 1 Order Now
Farnell Element14 EUROPE 8783 1 Order Now
ANGLIA Live EUROPE 5414 1 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

2228

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

1285

Min.Order

5

地区

EUROPE Order Now

AVNET

库存

9284

Min.Order

0

地区

AMERICA Order Now

Newark Element14

库存

10

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

399

Min.Order

2000

地区

AMERICA Order Now

MOUSER

库存

3871

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

8783

Min.Order

1

地区

EUROPE Order Now

ANGLIA Live

库存

5414

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

供货状态

批量生产

单价(US$)

0.991

数量

10000

ECCN (US)

EAR99

Country of Origin

-

L5973ADTR

封装

PowerSO-8

包装类型

Tape And Reel

单价(US$)

0.991*

Distributor availability ofL5973ADTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 4474 1 Order Now
ARROW EUROPE 10000 0 Order Now
MOUSER WORLDWIDE 4217 1 Order Now
RUTRONIK EUROPE 17500 2500 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

4474

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

10000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

4217

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

17500

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

供货状态

批量生产

单价(US$)

0.991

数量

10000

ECCN (US)

EAR99

Country of Origin

-

(*) 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

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L5973AD
批量生产
PowerSO-8 工业 Ecopack2
L5973ADTR
批量生产
PowerSO-8 工业 Ecopack2

L5973AD

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5973ADTR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.

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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.

LED驱动器

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]

LED自定义

V This option is required.
A This option is required.
Ω This option is required.

LEDs

This option is required. And must be a whole positive number between 1 and 20.
This option is required. And must be a whole positive number between 1 and 20.
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