Datasheet > BD9B400MUV

BD9B400MUV

更新时间： 2022-02-26 12:40:07

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
34页	1492K
描述
Integrated MOSFET Single Synchronous Buck DC/DC Converter

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BD9B400MUV 数据手册

Datasheet

2.7V to 5.5V Input, 4.0A Integrated MOSFET

Single Synchronous Buck DC/DC Converter

BD9B400MUV

General Description

Key Specifications

BD9B400MUV is

synchronous buck switching



Input Voltage Range:

2.7V to 5.5V

0.8 V to VPVIN x 0.8 V

4A (Max)

regulator with built-in low on-resistance power MOSFETs.

This IC, which is capable of providing current up to 4A,

features fast transient response by employing constant

on-time control system. It offers high oscillating

frequency at low inductance. With its original constant

on-time control method which operates low consumption

at light load, this product is ideal for equipment and

devices that demand minimal standby power

consumption.

Output Voltage Range:

Maximum Operating Current:

Switching Frequency:

High-Side MOSFET ON Resistance: 30mΩ (Typ)

Low-Side MOSFET ON Resistance: 30mΩ (Typ)

2MHz/1MHz (Typ)

Standby Current:

0μA (Typ)

Package(s)

VQFN016V3030

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

3.00 mm x 3.00 mm x 1.00 mm

Features

Synchronous Single DC/DC Converter



Constant on-time control suitable to Deep-SLLM

Over Current Protection

Short Circuit Protection

Thermal Shutdown Protection

Under Voltage Lockout Protection

Adjustable Soft Start

Power Good Output

VQFN016V3030 Package

(backside heat dissipation)

Applications

VQFN016V3030

 Step-down Power Supply for DSPs, FPGAs,

Microprocessors, etc.

 Laptop PCs/Tablet PCs/Servers

 LCD TVs

 Storage Devices (HDDs/SSDs)

 Printers, OA Equipment

 Entertainment Devices

 Distributed Power Supply, Secondary Power Supply

Typical Application Circuit

BD9B400MUV

PGD

VIN

PVIN

AVIN

PGD

BOOT

Enable

0.1µF

1.0µH

22µF

VOUT

AGND

PGND

CFB 22µF×2

MODE

FREQ

CSS

Figure 1. Application Circuit

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

.www.rohm.com

TSZ02201-0J3J0AJ01200-1-2

22.Apr.2016 Rev.002

1/30

TSZ22111 • 14 • 001

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