LP3301 datasheet(1/6 Pages) POWER

部件名	LP3301

功能描述	1.5MHz Fixed-Frequency PWM Operation

PDF	6 Pages

Scroll/Zoom	100%

制造商	POWER [Lowpower Semiconductor inc]

网页	http://www.lowpowersemi.com

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Preliminary Datasheet

LP3301

LP3301-datasheet

Dec.-2005

1

-1

1.5MHz Step-up DC/DC Converter

General Description

The LP3301 is a 1.5MHz PWM boost

switching regulator designed for constant-

Voltage driver applications.

The

LP3301

implements

a

constant

frequency 1.5MHz PWM control scheme. The

high frequency PWM operation also saves

board space by reducing external component

sizes. To improve efficiency, the feedback

voltage is set to 1.25V.

Highly integration and internal compensation

network minimizes as 5 external component

counts. Optimized operation frequency can

meet the requirement of small LC filters value

and

low

operation

current

with

high

efficiency.

Ordering Information

LP3301

□ □

□

F:Pb-Free

Package Type

B5: SOT-23-5

Features

High Efficiency: 85%

1.5MHz Fixed-Frequency PWM Operation

36V 500mA Integrated switch

Shutdown Supply Current:<1uA

Available in SOT23-5 Package

Built-in Over Voltage Protection of 29V

Minimize the External Component

RoHS Compliant and 100% Lead

(Pb)-Free

Pin Configurations

Applications

LCD Bias Supply

OLED Driver

GPS/PDA/Mobile phone

Marking information

Please view website.

Typical Application Circuit

0.1uF

1uF

24V

R2

10uH

R1

Vin

3

1

IN5819

GND

2

SHDN

4

FB

3

Vin

5

SW

1

LP3301

4.7uF

LP3301 Boost Circuit for LCD Bias

LP3301 Boost Circuit

Vout=(R1/R2+1)X1.25 V

0.1uF

4.7uF

Vout=(R1/R2+1)X1.25 V

182K

10K

ON/OFF

10uF

1

3

2

BAT54

+15V

100K

10uH

1.1M

Vin

1uF

47K

3

1

BAT54/SOT

-15V

100pF

GND

2

SHDN

4

FB

3

Vin

5

SW

1

LP3301

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制造商	部件名	数据表	功能描述
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