○Product structure：Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays

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TSZ02201-0T1T0AL00130-1-2

© 2014 ROHM Co., Ltd. All rights reserved.

www.rohm.com

15.Sep.2015 Rev.005

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

 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 :

 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

W(Typ) x D(Typ) x H(Max)

HRP7

9.395mm x 10.540mm x 2.005mm

HTSOP-J8

4.90mm x 6.00mm x 1.00mm

HRP7

HTSOP-J8

Typical Application Circuit

PVIN

VIN

RT

EN / SYNC

GND

SW

FB

VC

Cbulk

D1

R3

C1

L1

R2

C2

Datasheet