Datasheet > BD4271HFP-C

BD4271HFP-C

更新时间： 2024-12-01 11:08:15

品牌	Logo	应用领域
罗姆 - ROHM		复位电路电容器稳压器
页数	文件大小	规格书
34页	1950K
描述
BD4271HFP-C是45V高耐压稳压器，内置监视其输出的复位电路(RESET)及看门狗计时器(WDT) 。输出电流能力550mA，但待机电流很低，适合用来降低系统的消耗电流。有对输出进行ON/OFF的CTL引脚，将CTL设为L可关闭输出，且能减少电流消耗。稳压器输出低于4.65V(Typ)时输出复位信号。复位信号的复位延迟时间、看门狗计时器监视时间可通过外接电容器进行调整。

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BD4271HFP-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BD4271HFP-C相关器件

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