BD39001EKV-C Datasheet, PDF (1/56 Pages) Rohm – Buck-Boost Switching Regulator Watch Dog Timer

Datasheet
Power Management IC for Automotive Microcontroller
Buck-Boost Switching Regulator + LDO +
Step-down Switching Regulator + Reset +
Watch Dog Timer
BD39001EKV-C
General Description
BD39001EKV-C is a power management IC with
buck-boost switching regulator controller (DC / DC1),
secondary step-down switching regulator (DC / DC2),
LDO, reset and WDT.
The BD39001EKV-C includes protection circuits, such
as Under voltage, Over voltage, Over current and TSD.
Features
˙ç Automatically controlled buck-boost switching
regulator with 40 V rated V_CC, DC / DC2 and LDO
input
˙ç 3.3 V fixed output secondary step-down switching
regulator with built-in FET
˙ç 5 V fixed output secondary LDO
˙ç Configurable Sequence control
˙ç Over Current protection
DC / DC1: Adjustable voltage with external resistors
DC / DC2: Integrated
LDO: Integrated
˙ç Over voltage / Under voltage detection
˙ç Reset for LDO, DC / DC2 and WDT
˙ç Window Watchdog Timer
˙ç HTQFP48V package
Key Specifications
˙çInput voltage range
4.0 V to 30 V
(Startup voltage needs to be above 4.5V.)
˙ç Output voltage
Buck-Boost DC / DC1 FB Voltage
0.8 V
Secondary DC / DC2
3.3 V
Secondary LDO
5.0 V
˙ç Reference voltage accuracy
Buck-Boost DC / DC1 FB Voltage
±2 %
Secondary DC / DC2
±2 %
Secondary LDO
±2 %
˙ç Oscillation frequency
200 to 550 kHz
˙ç Max output current
Secondary Buck DC / DC2
900 mA
Secondary LDO
600 mA
˙ç Stand-by Current
0 μA (Typ)
˙ç Operating temperature range
-40 °C to 125 °C
˙ç AEC-Q100 Qualified
Package
HTQFP48V
W (Typ) × D (Typ) × H (Max)
9.00 mm × 9.00 mm × 1.00 mm
Applications
˙ç Microcontroller for Automotive
Typical Application Circuit
Simplified Circuit1
VO1
VO2
VO1
ççç
VCC
EN1
CL
VREG
OUTH
RT
VL
SS1
VDD
VO1
FB1
OUTL
COMP1
PGND1
SS2
VS2
FB2
SW2
VO2
COMP2
PGND2
EN2
VO3
VO3
VS3
CT
EN3
SEQ2
RST2#
SEQ3
RST3#
ENWD
RSTWD#
CLK
PG1
RTW
PG2
SEL_UVLO
GND
PG3
Buck-Boost Switching Regulator
+ Secondary Switching Regulator
+ Secondary LDO
Simplified Circuit2
Buck Switching Regulator
+ Secondary Switching Regulator
+ Secondary LDO
˓Product structure: Silicon monolithic integrated circuitç ˓This product is not designed for protection against radioactive rays
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© 2014 ROHM Co., Ltd. All rights reserved.
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TSZ0 2201-0T3T0AM00120-1-2
Apr.7.2014 Rev.001