Up to 2 A step down switching regulator for automotive applications

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  • The B5973D is a step down monolithic power switching regulator with a minimum switch current limit of 2.25 A so it is able to deliver up to 2 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 HSOP8 package (i.e. SO8 package with exposed frame), that allows to reduce the Rth(JA)down to approximately 40 °C/W. The device uses an internal P-channel DMOS transistor (with a typical RDSonof 250 mΩ) as switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 250 kHz. Having a minimum input voltage of 4 V only, it is particularly suitable for 5 V bus. Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short-circuit protection.

    主要特性

    • Qualified following the AEC-Q100 requirements (temperature Grade 1), see PPAP for more details.
    • 2 A DC output current
    • Operating input voltage from 4 V to 36 V
    • 3.3 V / (± 2 %) reference voltage
    • Output voltage adjustable from 1.235 V to 35 V
    • Low dropout operation: 100 % duty cycle
    • 250 kHz internally fixed frequency
    • Voltage feedforward
    • Zero load current operation
    • Internal current limiting
    • Inhibit for zero current consumption
    • Synchronization
    • Protection against feedback disconnection
    • Thermal shutdown

电路原理图

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产品型号
封装
包装类型
供货状态
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ECCN (US)
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B5973DTR PowerSO-8 Tape And Reel
Active
1.875 10000 EAR99 MALAYSIA 查看供货情况

Distributor availability ofB5973DTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 470 1 Order Now
MOUSER WORLDWIDE 82 1 Order Now

代理商库存报告日期: 2019-09-15

代理商名称

DIGIKEY

库存

470

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

82

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-09-15

Get sample
B5973D PowerSO-8 Tube
Active
1.875 10000 EAR99 MALAYSIA No availability of distributors reported, please contact our sales office

B5973DTR

封装

PowerSO-8

包装类型

Tape And Reel

Unit Price (US$)

1.875*

Distributor availability ofB5973DTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 470 1 Order Now
MOUSER WORLDWIDE 82 1 Order Now

代理商库存报告日期: 2019-09-15

代理商名称

DIGIKEY

库存

470

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

82

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-09-15

供货状态

Active

Unit Price (US$)

1.875

数量

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

B5973D

封装

PowerSO-8

包装类型

Tube

Unit Price (US$)

1.875*

供货状态

Active

Unit Price (US$)

1.875

数量

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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**
B5973D
Active
PowerSO-8 汽车 Ecopack2
B5973DTR
Active
PowerSO-8 汽车 Ecopack2

B5973D

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

B5973DTR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Automotive

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.

eDesignSuite

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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

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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

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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.