ame7720 AKM Semiconductor, Inc., ame7720 Datasheet

ame7720

Manufacturer Part Number

ame7720

Description

Step-up/step-down 60ma Regulated Charge Pump - Asahi Kasei Microsystems

Manufacturer

AKM Semiconductor, Inc.

Datasheet

1.AME7720.pdf (16 pages)

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n General Description

doublers that delivers a regulated output. No external in-

ductor is required for operation. Using three small ca-

pacitors, the AME7720 / 7721 can deliver up to 60mA to

the voltage regulated output. The AME7720 / 7721 fea-

tures very low output pipple and high efficiency over a

large portion of its load range making this device ideal for

battery-powered applications. Furthermore, the combi-

nation of few external components and small package

size keeps the total converter board area to a minimum

in space restricted applications.

circuit to protect the device under continuous output short

circuit conditions.

package and is rated from -40

n Features

AME7720 / 7721

The AME7720 / 7721 is switched-capactitor voltage

The AME7720 / 7721 contains a thermal management

The AME7720 / 7721 is available in SOT-25 / SOT-26

l Input Voltage Range:

l Accurate to with 5%

l Output Current:

l 1MH

l Shutdown Mode < 1 A (AME7720)

l Short Circuit Protection:Typ. 80mA

l Over Temperature Protection

l All AME’ s Lead Free Product Meet RoHS

Standards

5V Version: 2.7V to 5.5V

3.3V Version: 1.8V to 5.5V

5V Version: 60mA with V

3.3V Version: 60mA with V

AME, Inc.

Switching Frequency

C to 85

>=3.0V

>=2.2V

n Applications

n Functional Block Diagram

60mA Regulated Charge Pump

l Cellular Phone

l Digital Camera

l PDAs LCD display

l LED/Display Back Light Driver

l Smart Card Reader

l SIM Card Supply

l PCMCIA Card

l LCD Display

Control

C-

Step-Up/Step-Down

AME7720

AME7721

C+

GND

OUT

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