Datasheet > BU90003GWZ

BU90003GWZ

更新时间： 2024-01-23 17:49:44

品牌	Logo	应用领域
罗姆 - ROHM		稳压器开关
页数	文件大小	规格书
24页	659K
描述
Step-down Switching regulators with Built-in Power MOSFET

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BU90003GWZ 数据手册

BU90002GWZ

Datasheet

Single-chip Type with Built-in FET Switching Regulator Series

Step-down Switching regulators

with Built-in Power MOSFET

BU9000xGWZ series

●General Description

●Applications

The BU9000xGWZ are a high efficiency 6MHz

synchronous step-down switching regulator with ultra

low current PFM mode.

Smart phones, Cell phones, Portable applications and

Micro DC/DC modules, USB accessories

It provides up to 1.0A load current and an input voltage

range from 3.0V to 5.5V, optimized for battery powered

portable applications.

●Package(s)

UCSP35L1

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

1.30mm x 0.90mm x 0.40mm

BU9000xGWZ has a mode control pin that allows the

user to select Forced PWM(Pulse Width

Modulation)mode or PFM(Pulse Frequency Modulation)

and PWM auto change mode utilized power save

operation at light load current.

●Typical Application Circuit(s)

●Features

¢ Fast transient response

¢ Automatic PFM/PWM operation

¢ Forced PWM operation

¢ Internal Soft Start

¢ Under voltage lockout

¢ Over current protection

¢ Thermal shutdown

Figure 1. Typical Application Circuit(s)

●Lineup

Operating mode

Output

voltage

Part No.

Input voltage

Switching frequency

MODE=L

MODE=H

BU90002GWZ

BU90003GWZ

BU90004GWZ

BU90005GWZ

BU90006GWZ

BU90007GWZ

3.30V

1.20V

1.80V

2.50V

3.00V

1.25V

4.0V to 5.5V

2.3V to 5.5V

5.4MHz to 6.6MHz

3.6MHz to 4.4MHz

4.8MHz to 6.0MHz

5.4MHz to 6.6MHz

3.6MHz to 4.4MHz

Automatic

PFM/PWM

Forced PWM

Forced PFM

Automatic

PFM/PWM

●Pin Configuration(s)

●Pin Description(s)

(BOTTOM VIEW)

Pin No.

Symbol

Function

VIN

Power supply input pin

Enable pin

MODE

GND

MODE

GND pin

VIN

GND

Forced PWM mode pin

Inductor connection pin

Feedback voltage input pin

Figure 2. Pin Configuration(s)

○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

www.rohm.co

TSZ22111・14・001

TSZ02201-0F2F0AG00010-1-2

1/21

04.Jul.2012 Rev.001

12 3 4 5 6 7...24

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