MP1522(2003) 데이터 시트보기 (PDF) - Monolithic Power Systems

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MP1522
(Rev.:2003)

25V Step Up Converter in 3mm QFN Package

Monolithic Power Systems 

Monolithic Power Systems

MP1522

25V Step Up Converter

in 3mm QFN Package

General Description

The MP1522 is a step up converter that

generates up to a 25V output voltage from a

2.7V to 25V input. It uses a current limited

Variable Frequency control algorithm to

optimize efficiency and minimize external

component size and cost. The internal 0.5Ω

N-channel MOSFET switch can withstand up

to 28V allowing the MP1522 to produce high

output voltage with high efficiency.

The MP1522 includes input under voltage and

over temperature protection. The MP1522 is

available in the tiny 3mm x 3mm, 6 pin QFN

and the 5 pin SOT23 packages.

Ordering Information

Part Number

MP1522EQ

MP1522ET

EV0022

Package

Temperature

QFN6

-20° to +85°C

SOT23-5

-20° to +85°C

MP1522EQ Evaluation Board

Features

Internal 0.5Ω Power Switch

Output Voltage up to 25V

Up to 90% efficiency

Low 1µA Shutdown Current

Input Under Voltage Protection

Thermal Shutdown

Internal Current Limit

Available in tiny 3mm x 3mm 6 pin QFN

and 5 pin SOT23 Packages

Evaluation Board Available

Applications

Handheld Computers, PDAs

Cell phones

Digital Still and Video Cameras

Small LCD Displays

Figure 1: Typical Application Circuit

VIN

ON

OFF

6 EN

SW 3

2 MP1522 4

GND

BIAS

5 GND

1

FB

100%

Efficiency vs. Load Current, VOUT = 12V

VOUT

90%

80%

70%

60%

VIN

3.3V

5V

10V

50%

1

10

100

Load Current (mA)

1000

MP1522 Rev 1.7_06/26/03

Monolithic Power Systems, Inc.

1

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