BD39012EFV-C Datasheet, PDF (1/42 Pages) Rohm – Independent enable control

Datasheet
Management IC for Automotive Microcontroller
System Regulator for microcontroller for
automotive
BD39012EFV-C
General Description
BD39012EFV-C is a power management IC with
1 ch DC / DC convertor, 1 ch LDO, reset and watch dog
timer. It can supply the power supply to module from
battery directly. LDO has reset built-in and always
watches that it supplies stable power supply to module.
In addition, window watch dog timer is provided to detect
the abnormality of the microcomputer. BD39012EFV-C
enables a superior heat dissipation and a compact PCB
design by HTSSOP-B24 package.
Features
 Synchronous rectifier step-down DC / DC converter
with built-in FET (Adjustable output)
 Secondary LDO with built-in 5 V output FET
 Monitoring function
Output over voltage / under voltage detection
(PG output), Reset function (LDO)
Window Watchdog Timer
 Built-in protection function
Input under voltage protection (UVLO)
Thermal shut down (TSD)
Output over current protection (OCP)
 Independent enable control
 HTSSOP-B24 package
Key Specifications
 Input voltage range:
4 V to 45 V
(Startup voltage needs to be above 4.5V.)
 Output Voltage Accuracy
Step-down DC / DC Converter FB Voltage:
0.8 V ±2 %
Secondary LDO:
5.0 V ±2 %
 Output Maximum Current
Step-down DC / DC Converter:
1.0 A
Secondary LDO:
0.4 A
 Operating Frequency
Step-down DC / DC Converter:
200 k to 600 kHz (Typ)
 Standby Current:
0 μA (Typ)
 Operating Temperature Range: -40 °C to +125 °C
Package
HTSSOP-B24
W(Typ) x D(Typ) x H(Max)
7.80 mm x 7.60 mm x 1.00 mm
Applications
 Microcontroller for Automotive
HTSSOP-B24
Typical Application Circuit
VO1
VCC
EN1
VREG
RT
PVCC
SW
VCC
or
VO1
FB
COMP
EN2
PGND
VS
VO2
PG1
RST2
PG2
CT ENWD CLK
RSTWD
RTW GND
OPEN
(Note1)
VO1
☆These specifications may be changed without a notice.
(Note 1) Please connect when the application is that the load current of VO1 output exceed in 500 mA.
〇Product structure : Silicon monolithic integrated circuit
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© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
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TSZ02201-0T2T0AM00180-1-2
11.Sep.2014 Rev.002