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BD1LB500EFJ-C Datasheet

In-Vehicle 1ch Low Side Switch

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Datasheet
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
Low ON resistance RDS(ON)=350m(Typ) (VDD=IN=5V,
Ta=25°C, IOUT=0.25A)
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.)
Basic Application Circuit (Recommendation)
VDD
Specifications
Operating voltage range
ON resistance (25°C, Typ.)
Overcurrent limitation (Typ.)
Active clamp energy (25°C)
3.5V to 5.5V
350m
1.50A
25mJ
Package
HTSOP-J8
MSOP8
4.90mm x 6.00mm x 1.00mm
2.90mm x 4.00mm x 0.90mm
HTSOP-J8
VBAT
RL
MSOP8
0.1µF
8
VDD
Logic
7
N.C.
6
DRAIN
Under voltage
lock out
Open load
detection
Overvoltage
protection
5
DRAIN
Rext (2)
Over current
Limit
SOURCE
IN
ST
SOURCE (GND)
(GND)
1234
10k (3)
(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.
Product configuration: Silicon monolithic integrated circuit
www.rohm.co.jp
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
The product is not designed for radiation resistance.
1/16
TSZ02201-0G3G0BD00040-1-2
2015.04.01 Rev.006


Rohm Semiconductor Electronic Components Datasheet

BD1LB500EFJ-C Datasheet

In-Vehicle 1ch Low Side Switch

No Preview Available !

BD1LB500 Series
Datasheet
Pin Descriptions
Pin No.
Symbol
Function
1 IN Input terminal; a pull down resistor is connected internally.
Self-diagnostic output terminal; outputs “L” at detection of overcurrent, at open (IN=0V),
2 ST and in the overheat state. See the truth table. It is structured as COMS inverter output
circuit.
3,4
SOURCE
(GND)
Ground terminal
5,6
DRAIN
Output terminal; limits output current to protect IC when load is short-circuited and current
exceeding the overcurrent detection value (0.8A Min) flows to the output terminal.
7
N.C.
No Connect pin
8
VDD
Power supply terminal
Cooling Tab (1)
TAB
The heat radiation metal on the substrate is connected to the IC sub. Therefore, connect
Cooling Tab to the external GND electrical potential (for HTSOP-J8 only).
(1)MSOP8 does not have Cooling Tab.
Pin Configurations
Product Name
BD1LB500EFJ-C
BD1LB500FVM-C
PKG
HTSOP-J8
MSOP8
TSD function
Self-restart
ON resistance
(25°C,Typ)
350m
www.rohm.co.jp
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/16
TSZ02201-0G3G0BD00040-1-2
2015.04.01 Rev.006


Part Number BD1LB500EFJ-C
Description In-Vehicle 1ch Low Side Switch
Maker Rohm
Total Page 19 Pages
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