BD90640HFP-CTR Datasheet, PDF (1/44 Pages) Rohm – 1ch Step-Down Switching Regulator

Datasheet
Input Voltage 3.5 V to 36 V
Output SW Current 4 A / 2.5A / 1.25A
1ch Step-Down Switching Regulator
BD906xx-C series
General Description
BD906xx-C series is a step-down switching regulator
with integrated POWER MOS FET and have the
capability to withstand high input voltage, providing a free
setting function of operating switching frequency with
external resistor. This switching regulator features a wide
input voltage range (3.5 V to 36 V, Absolute maximum 42
V) and operating temperature range (-40 °C to +125 °C).
Furthermore, an external synchronization input pin
enables synchronous operation with external clock.
Features
 AEC-Q100 Qualified ^{(Note 1)}
 Integrated Pch POWER MOS FET
 Low Dropout: 100 % ON Duty Cycle
 External Synchronization Function
 Soft Start Function: 1.38 ms (fSW = 500 kHz)
 Current Mode Control
 Over Current Protection
 Low Supply Voltage Error Prevention
 Thermal Shut Down Protection
 Short Circuit Protection
 High power HRP7 package mounted
 Compact and High power HTSOP-J8 package
mounted
 Load dump up to 42 V.
(Note 1 : Grade 1)
Applications
 Automotive Battery Powered Supplies
(Cluster Panels, Car Multimedia)
 Industrial / Consumer Supplies
 Other electronic equipment
Key Specifications
 Input Voltage Range :
3.5 V to 36 V
(Initial startup is over 3.9 V)
 Output Voltage Range :
0.8 V to VIN
 Output Switch Current : 4 A / 2.5 A / 1.25 A (Max)
 Switching Frequency :
50 kHz to 600 kHz
 Reference Voltage Accuracy :±2% (-40 °C to +125 °C)
 Shutdown Circuit Current :
0 µA (Typ)
 Operating Temperature Range(Ta) : -40 °C to +125 °C
Package
HRP7
HTSOP-J8
W(Typ) x D(Typ) x H(Max)
9.395mm x 10.540mm x 2.005mm
4.90mm x 6.00mm x 1.00mm
HRP7
HTSOP-J8
Typical Application Circuit
V_IN
Cbulk
PVIN
VIN
C_IN
L1
SW
V_O
D1
C_{O R1}
C2
FB
RT
V_{EN / SYNC} ^CRT
R_RT
R2
EN / SYNC
VC
GND
R3 C1
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
CVTSZ22111・14・001
○This product has no designed protection against radioactive rays
1/40
TSZ02201-0T1T0AL00130-1-2
15.Sep.2015 Rev.005