ACT6305 View Datasheet(PDF) - Active-Semi, Inc

Part Name

Description

Manufacturer

ACT6305

Low Input High Efficiency Synchronous Step-Up DC/DC Converter

Active-Semi, Inc 

ACT6305

Rev 3, 15-Nov-12

Low Input High Efficiency

Synchronous Step-Up DC/DC Converter

FEATURES

• 1V Typical Startup Voltage

• Up to 94% Efficiency

• Fully Integrated Power Stage

• Fixed 3.3V/5V or Adjustable Output Voltage

• NanoStandbyTM Shutdown Mode

• Tiny SOT23-5 Package

− RoHS Compliant Package

APPLICATIONS

• Hand-Held Devices

• One to Three Cell Battery Operated Devices

• PDAs

• Cellular Phones

• Digital Cameras

• GPS

GENERAL DESCRIPTION

The ACT6305 is a high efficiency synchronous

step-up DC/DC converter that consumes just 17µA

of quiescent supply current and is capable of deliv-

ering more than 400mA output current using only

three external components. This device achieves a

typical startup voltage of just 1V, making it ideal for

applications operating from 1 or 2 alkaline cells.

This device incorporates an internal synchronous

rectifier, and achieves excellent peak efficiency of

up to 94% and features a proprietary control

scheme that ensures high efficiency over a wide

load current range.

The ACT6305 features pin-selectable output volt-

ages of 3.3V or 5V, or it can also be set externally

to any voltage between 2V and 5V. The ACT6305 is

available in a tiny SOT23-5 package.

TYPICAL APPLICATION CIRCUIT

100

90

80

70

60

50

40

30

0.1

Efficiency vs. Output Current

VIN = 5V

VIN = 2.4V

VIN = 3.5V

VIN = 1.2V

VOUT = 5V

1.0

10

100

1000

Output Current (mA)

Pb-free

Innovative PowerTM

-1-

www.active-semi.com

Copyright © 2012 Active-Semi, Inc.

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