〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays

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TSZ02201-0J3J0AL01130-1-2

© 2016 ROHM Co., Ltd. All rights reserved.

21.Apr.2016 Rev.001

TSZ22111 • 14 • 001

www.rohm.com

Secondary power supply series for automotive

2.6V to 5.5V, 2A, 0.3MHz to 2.4MHz

Synchronous Step-Down Converter

BD90521MUV-C / BD90521EFV-C

General Description

The BD90521MUV/EFV -C is a synchronous step-down

converter which operates in current mode. It can operate

with maximum frequency of 2.4 MHz, and can downsize

external parts such as inductor. It can supply a maximum

output current of 2A with built-in Pch and Nch output

MOSFET. Output voltage and oscillation frequency can

be adjusted by external resistors and can also be

synchronized with an external clock.

Features





Up to 2.4MHz movement



Excellent Load Response by Current Mode Control



Built-in Pch/Nch Output MOSFET.



Frequency Synchronization with External Clock.



Output Error Monitor Terminal (PGOOD Terminal)



Adjustable Output Voltage and Oscillation Frequency

by External Resistors.



Built-in Self-Reset Type Overcurrent Protection.



Built-in Output Overvoltage/Short Circuit Detection.



Built-in Temperature Protection (TSD) and UVLO.

(Note 1: Grade 1)

Applications



Automotive Battery-Powered Supplies

(Cluster Panels, Car Multimedia)



Industrial / Consumer Supplies



Other electronic equipment

Key Specifications



Operating Temperature Range(Ta): -40°C to +125°C



Input Voltage Range:

2.6V to 5.5V



Output Current:

2.0A(Max)



Reference Voltage Accuracy:

±1.5 %



Output Voltage Range:

0.6V to 5.0V



Switching Frequency:

0.3MHz to 2.4MHz

Package

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

VQFP20SV4040

4.00mm x 4.00mm x 1.00mm

HTSSOP-B20

6.50mm x 6.40mm x 1.00mm

Typical Application Circuit

VQFN20SV4040

HTSSOP-B20

Datasheet