Diodes AP1604 Manuel d'utilisateur télécharger pdf

AP1604A

PWM/PFM DUAL MODE STEP-DOWN DC/DC

CONVERTER

AP1604A Rev. 2 1 of 7 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

Lead-free

• Input voltage range: 2.2V~5.5V (V

OUT

type)

• Oscillator frequency: 600KHz (Typ.)

• Internal reference: 1.0V (Typ.)

• High efficiency: 93% (Typ.)

• Stand-by capability: I

STB

=2µA. (Typ.)

• Soft-start time set-up externally type possible

• Current limit and thermal shutdown protection

• Lead Free Package: SOT25

• SOT25: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)

The AP1604A series are multi-functional step-down DC/DC

converters with built-in speed, low ON resistance drivers. It is

capable to deliver more than 800mA output current with external

coil, diode and capacitor.

Output voltage is set-up by the external resistors. (±2.5%

accuracy). The 600KHz AP1604A that can work out with small

value external components comes out more compact board.

The device switches to and works under PFM mode with light

loads. It keeps at high efficiency for both light loads and large

output current.

AP1604A can be soft-start with a proper capacitor connected

between CE/SS pin and ground. The stand-by current is less

than 2uA when CE/SS pin is at “LOW” status. The device is

forced to switch off as the voltage at that pin is lower than the

stipulated voltage.

Applications

• Electronic Information Organizers

• Palmtops

• Cellular and portable phones

• Portable Audio Systems

• Various Multi-function Power Supplies

Ordering Information

AP1604A W X - 7

Packing

Package Lead Free

W : SOT25

7 : Tape & Reel

L : Lead Free

G : Green

Device

Package

Code

Packaging

(Note 2)

7” Tape and Reel

Quantity Part Number Suffix

AP1604AWL-7

W SOT25

3000/Tape & Reel -7

AP1604AWG-7

W SOT25

3000/Tape & Reel -7

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html

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

1 2 3 4 5 6 7

Résumé du contenu

Page 1 - General Description

AP1604APWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER AP1604A Rev. 2 1 of 7

Page 2 - Block Diagram

AP1604APWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER AP1604A Rev. 2 2 of 7

Page 3 - Electrical Characteristics

AP1604APWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER AP1604A Rev. 2 3 of 7

Page 4 - CONVERTER

AP1604APWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER AP1604A Rev. 2 4 of 7

Page 5 - Typical Application Circuit

AP1604APWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER AP1604A Rev. 2 5 of 7

Page 6 - Marking Information

AP1604APWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER AP1604A Rev. 2 6 of 7

Page 7

AP1604APWM/PFM DUAL MODE STEP-DOWN DC/DC CONVERTER AP1604A Rev. 2 7 of 7

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Diodes AP1604 Manuel d'utilisateur

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