AME5130_1 datasheet, PDF - EEWORLD Datasheet

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AME5130_1: DescriptionMicropower Step-Up DC/DC Converter; File Size502KB，16 Pages; ManufacturerAnalogMicroElectronics,Inc.(AME); AMT was founded in Taiwan in November 2000 and merged into AMT Microelectronics, Inc., a US company located in Silicon Valley, California, USA. Its stock was officially listed for public trading in March 2004.

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Micropower Step-Up DC/DC Converter

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AME

AME5130

General Description

The AME5130 is a fixed off-time step-up DC/DC con-

verter in a small 5-lead SOT-25 package.The AME5130

is ideal for LCD panels requiring low current and high effi-

ciency as well as LED applications for cellular phone back-

lighting, PDAS,and other hand-held devices. The low

400ns off-time allows the use of tiny external compo-

nents.

AME5130 can drive up 8 white LEDs from a single Li-

Ion battery DC 2V to 5.5V; can be turned on by putting

more than 1V at pin 4(EN). To control LED brightness,

the LED current can be pulsed by applying a PWM (pulse

width modulated) signal with a frequency range of 100Hz

to 50KHz to the EN pin.

Micropower Step-Up

DC/DC Converter

Typical Application

2.5V-4.2V

10µH

LED

OUT

4.7µF

Ceramic

AME5130

Option for

6LEDs

4.7µF

Ceramic

>1.1V 4

GND

80Ω

* I

LED

/R2

Features

0.7Ω internal switch

Uses small surface mount components

Adjustable output voltage up to 20V

2V to 5.5V input range

Input undervoltage lockout

0.01µA shutdown current

Small 5-Lead SOT-25 package

All AME’ s Lead Free Product Meet RoHS

Standard

Figure 1

：

Six White LEDs Application in Li-lon

Battery

2.5V-4.2V

15µH

20V

20mA

4.7µF

Ceramic

200K

AME5130

GND

13K

OUT

4.7µF

Ceramic

Applications

White LED Back-Lighting

Hand-held Devices

Digital Cameras

Portable Applications

LCD Bias Power

Figure 2

：

Typical 20V Application

Rev.F.02

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