Document
Datasheet
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
AEC-Q100 Qualified (Note 1) 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
VQFN20SV4040
HTSSOP-B20
Typical Application Circuit
PGND PGND PGOOD CTL2 SYNC
VIN EN CTL1 GND COMP
Product structure : Silicon monolithic integrated circuit .www.rohm.com © 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 • 14 • 001
This product has no designed protection against radioactive rays
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TSZ02201-0J3J0AL01130-1-2 21.Apr.2016 Rev.001
BD90521MUV-C / BD90521EFV-C
Datasheet
Contents
General Description ........................................................................................................................................................................1 Features..........................................................................................................................................................................................1 Applications ....................................................................................................................................................................................1 Key Specifications ..........................................................................................................................................................................1
Package ...............................................................................................................................................................1
Typical Application Circuit ...............................................................................................................................................................1 Contents .........................................................................................................................................................................................2 Pin Configurations ..........................................................................................................................................................................3 Pin Descriptions..............................................................................................................................................................................3 Block Diagram ................................................................................................................................................................................4 Description of Blocks ......................................................................................................................................................................4 Absolute Maximum Ratings ............................................................................................................................................................6 Thermal Resistance ........................................................................................................................................................................6 Recommended Operating Conditions .............................................................................................................................................7 Electrical Characteristics.................................................................................................................................................................8 Typical Performance Curves..............................................................................................................................................