Datasheet



Product configuration: Silicon monolithic integrated circuit ○The product is not designed for radiation resistance.

1/16

TSZ02201-0G3G0BD00040-1-2

© 2015 ROHM Co., Ltd. All rights reserved.

2015.04.01 Rev.006

www.rohm.co.jp

TSZ22111・14・001

1ch Low Side Switch IC

In-Vehicle 1ch Low Side Switch

BD1LB500 Series

(BD1LB500EFJ-C

BD1LB500FVM-C)

Features

■

Built-in overcurrent limiting circuit

■

Built-in thermal shutdown circuit (TSD)

■

Built-in open load detection circuit (at output OFF)

■

Enables direct control from CMOS logic ICs, etc.

■

Low standby current

■

Built-in under voltage lock out circuit

■

Built-in diagnostic output (ST) terminal

■

■

Built-in overvoltage protection(active clamp) for output

circuit

■

Monolithic power IC in which the control unit (CMOS)

and power MOS FET are incorporated into one chip

■

1ch low side switch for driving mechanical relay coil

■

AEC-Q100 Qualified

(1)

(1) Grade1

Overview

BD1LB500 Series is an in-vehicle 1ch low side switch.

This switch builds in the overcurrent limiting circuit,

thermal shutdown circuit, open load detection circuit and

under voltage lock out circuit. It also provides the

diagnostic output circuit when an abnormality is

detected.

Application

■

In-vehicle application (Air conditioners, body devices,

meters, etc.)

Specifications

Operating voltage range

3.5V to 5.5V

ON resistance (25°C, Typ.)

350mΩ

Overcurrent limitation (Typ.)

1.50A

Active clamp energy (25°C)

25mJ

Package

HTSOP-J8

4.90mm x 6.00mm x 1.00mm

MSOP8

2.90mm x 4.00mm x 0.90mm

Basic Application Circuit (Recommendation)

(2) When the open detection function is required, an external resistance must be added between DRAIN terminal and SOURCE terminal.

(3) It is necessary to detect unusual state(ST terminal is low) when VDD terminal is opened.

MSOP8

HTSOP-J8

8

1

2

3

4

7

6

5

Logic

Under voltage

lock out

Open load

detection

Overvoltage

protection

Over current

Limit

DRAIN

DRAIN

IN

SOURCE (GND)

SOURCE

(GND)

ST

10k

VDD

N.C.

0.1µF

(2)

Rext

VBAT

(3)