AP1603

STEP-UP DC/DC CONVERTER

AP1603 Rev. 1

1 of 8

NOVEMBER 2006

www.diodes.com

Lead-free

•

A Guaranteed Start-Up from less than 0.9 V

•

High Efficiency

•

Low Quiescent Current

•

Less Number of External Components needed

•

Low Ripple and Low Noise

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Space Saving Lead-Free Packages: SOT26

•

Lead Free Finish/RoHS Compliant for Lead Free

products (Note 1)

The AP1603 is a high efficiency step-up DC/DC converter for

applications using as few as a single NiMH or Li-Ion battery cells.

Only four external components are required to deliver a fixed

output voltage of 3.3V. The AP1603 starts up from less than 0.9V

input with 1mA load. Pulse Frequency Modulation scheme brings

optimized performance for applications with light output loading

and low input voltages. The output ripple and noise are lower

compared with the circuits operating in PSM mode.

The PFM control circuit operating in 150KHz (max.) switching

rate results in smaller passive components. The space saving

SOT26 packages make the AP1603 an ideal choice of DC/DC

converter for space conscious applications, like pagers,

electronic cameras, and wireless microphones.

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Pagers

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Cameras

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Wireless Microphones

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Pocket Organizers

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Battery Backup Suppliers

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Portable Instruments

A P 1 6 0 3 X X X

Package

Packing

- 7 : Taping

W : SOT26

Lead-Free

L : Lead-Free

(Note 2)

Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

Note:

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

Features

General Description

Applications

Ordering Information

7” Tape and Reel

Device

Package Code

Packaging

(Note 2)

Quantity

Part Number Suffix

AP1603W

W

SOT26

3000/Tape & Reel

-7