BD1LB500EFJ-C_15 Datasheet, PDF (1/20 Pages) Rohm – In-Vehicle 1ch Low Side Switch

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 R_DS(ON)=350mΩ(Typ) (V_DD=IN=5V,
Ta=25°C, I_OUT=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
350mΩ
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)
1
2
3
4
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
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TSZ22111・14・001
○The product is not designed for radiation resistance.
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TSZ02201-0G3G0BD00040-1-2
2015.11.10 Rev.007