Datasheet > BD87B34G-C

BD87B34G-C

更新时间： 2024-11-03 17:14:43

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
40页	2160K
描述
BD87B34G-C integrate a Reset (RESET) that monitors the input voltage of the microcomputer and a Wa

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BD87B34G-C 数据手册

Datasheet

Voltage Detector

Voltage Detector ICs with Watchdog Timer

for Automotive

BD37BxxFVM-C BD87BxxFVM-C BD87BxxG-C

General Description

Key Specifications

BD37BxxFVM-C, BD87BxxFVM-C and BD87BxxG-C

integrate a Reset (RESET) that monitors the input

voltage of the microcomputer and a Watchdog Timer

(WDT) that monitors the clock signal of the

microcomputer. Even with its wide input voltage up to

20 V the quiescent current is kept low, making it

possible to improve redundancy of various system with

low current consumption. The RESET detection voltage

can be selected either from fixed type or from variable

type just by adjusting the external resister. Also, the

RESET delay time and Watchdog monitor time can be

adjusted by the external capacitor.

◼ Wide Temperature Range (Ta): -40 °C to +125 °C

◼ Wide Input Voltage Range:

◼ Low Quiescent Current:

-0.3 V to +20 V

3.0 µA (Typ)

Packages

MSOP8

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

2.9 mm x 4.0 mm x 0.9 mm

2.9 mm x 2.8 mm x 1.25 mm

SSOP6

Features

◼ AEC-Q100 Qualified^{(Note 1)}

MSOP8

SSOP6

◼ Functional Safety Supportive Automotive Products

◼ Qualified for Automotive Applications

◼ Integrated Power ON and Under-Voltage Detection

Reset

◼ Integrated Watchdog Timer

◼ Adjustable Reset Delay Time and Watchdog Monitor

Time by External Capacitor

◼ Adjustable Detection Voltage Power ON and Under-

Voltage Detection Reset by External Resister^{(Note 2)}

(Note 1) Grade 1

(Note 2) BD87B00FVM-C only

Applications

◼ Power Train

◼ Body Control Unit

◼ Car Infotainment System

Typical Application Circuits

◼ External Components

Capacitor: 0.001 µF ≤ C_CT≤ 47 µF, 0.00047 µF ≤ C_CTW≤ 10 µF

Resistor: 10 kΩ (Min) ≤ R_RO, 10 kΩ ≤ R1 ≤ 200 kΩ, 5 kΩ ≤ R2 ≤ 150 kΩ

V_RO

R_RO

Reset Output

VDD

INH

Input Voltage

VDD

ADJ

CLK

Reset Output

Input Voltage

Inhibit Signal

C_VDD

C_CT

Clock Signal

CTW

Clock Signal

CLK

CTW

C_CTW

GND

BD37BxxFVM-C/BD87BxxFVM-C/BD87BxxG-C^{(Note 2)}

(Note 2) BD87BxxG-C do not have the INH pin, and the WDT is always ON

BD87B00FVM-C

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

www.rohm.com

TSZ22111 • 14 • 001

TSZ02201-0BMB0AN00060-1-2

19.Dec.2023 Rev.004

1/37

12 3 4 5 6 7...40

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与BD87B34G-C相关器件

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BD87B41FVM-C	ROHM	获取价格	BD87B41FVM-C integrate a Reset (RESET) that monitors the input voltage of the microcompute
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