Datasheet > BD4271EFJ-C

BD4271EFJ-C

更新时间： 2024-12-01 11:08:15

品牌	Logo	应用领域
罗姆 - ROHM		监控电容器稳压器
页数	文件大小	规格书
34页	1950K
描述
BD4271EFJ-C是一款45V高耐压稳压器，内置用来监控其输出的复位（RESET）功能和看门狗定时器（WDT）。输出电流能力为550mA，但暗电流却能够保持在很低水平，适用于进一步降低系统的消耗电流。配有可以使输出ON/OFF的CTL引脚，通过设置为CTL=L可以关闭输出，从而可以进一步降低消耗电流。当稳压器的输出低于4.65V（Typ）时，将会输出复位信号。复位信号的恢复延迟时间和看门狗监控时间可以通过外置电容器进行调整。

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BD4271EFJ-C 数据手册

Datasheet

LDO Regulators with Watchdog Timer and Voltage Detector

550 mA Output LDO Regulator

with WDT and Voltage Detector

BD4271xxx-C Series

General Description

Key Specifications

BD4271xxx-C Series are automotive voltage regulators

with watchdog timer and offers the output current of 550

mA while limiting the quiescent current low. A logical

“HIGH” at the CTL pin enables the LDO regulator and

“LOW” disables the LDO regulator and keeps current

consumption low.

A reset signal is generated for an output voltage V_Oof

Typ 4.65 V.

The reset delay time and watchdog time (WDT) can be

programmed by the external capacitor.

◼ AEC-Q100 qualified ^{(Note 1)}

◼ Functional Safety Supportive Automotive Products

◼ Qualified for Automotive Applications

◼ Wide Temperature Range (Tj):

◼ Wide Operating Input Range:

◼ Low Quiescent Current:

◼ Output Load Current:

-40 °C to +150 °C

-0.3 V to +45 V

75 µA (Typ)

550 mA

◼ Output Voltage:

◼ Reset Detection Voltage Accuracy:

5.0 V (Typ) ± 2 %

4.53 V to 4.77 V

4.65 V (Typ)

◼ Enable input

◼ Over Current Protection (OCP)

◼ Thermal Shutdown (TSD)

(Note1: Grade 1)

Features

◼ Low ESR ceramic capacitors applicable for output

◼ Low drop voltage: PDMOS output transistor

◼ Power on and under-voltage reset

◼ Programmable reset delay and watchdog time by

Packages

W (Typ) x D (Typ) x H (Max)

9.395 mm x 10.540 mm x 2.005 mm

10.00 mm x 14.95 mm x 4.50 mm

4.9 mm x 6.0 mm x 1.0 mm

◼ HFP: HRP7

◼ FP2: TO263-7

◼ EFJ: HTSOP-J8

external capacitor

Applications

◼ Onboard Vehicle Device

(Engine ECU, Body-control, Car Stereos, Satellite

Navigation System, etc.)

HRP7

TO263-7

HTSOP-J8

Typical Application Circuit

C_IN≥ 0.1 µF, C_CT= 0.001 µF to 10 µF, C_O≥ 6 µF

CTL

GND

CLK

VCC

C_IN

C_CTC_O

〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays.

www.rohm.com

TSZ02201-0G9G0AN00610-1-2

30.Mar.2023 Rev.004

1/31

TSZ22111・14・001

12 3 4 5 6 7...34

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与BD4271EFJ-C相关器件

型号	品牌	获取价格	描述	数据表
BD4271FP2-C	ROHM	获取价格	BD4271FP2-C是45V高耐压稳压器，内置监视其输出的复位电路(RESET)及看门狗
BD4271FP2-CE2	ROHM	获取价格	Analog Circuit,
BD4271HFP-C	ROHM	获取价格	BD4271HFP-C是45V高耐压稳压器，内置监视其输出的复位电路(RESET)及看门狗
BD4271HFP-CTR	ROHM	获取价格	Analog Circuit,
BD42754FP2-C	ROHM	获取价格	500 mA Output LDO Regulator with Voltage Detector
BD42754FP2-CE2	ROHM	获取价格	500 mA Output LDO Regulator with Voltage Detector
BD42754FPJ-C	ROHM	获取价格	BD42754FPJ-C是45V高耐压稳压器，内置有监视其输出的1ch复位电路(RESET
BD4275FP2-C	ROHM	获取价格	500 mA Output LDO Regulator with Voltage Detector
BD4275FPJ-C	ROHM	获取价格	500 mA Output LDO Regulator with Voltage Detector
BD429	INFINEON	获取价格	NPN SILICON PLANAR TRANSISTOR

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