Diodes AP2008 Uživatelský manuál stáhnout pdf

AP2008

PWM BUCK CONTROLLER

AP2008 Rev. 2 1 of 8 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

Lead-free

• PWM Buck Control Circuitry

• Operating voltage can be up to 20V

• Under voltage Lockout (UVLO) Protection

• Short Circuit Protection (SCP)

• Soft-start circuit

• Variable Oscillator Frequency -- 300Khz Max

• 0.77V voltage reference Output

• 8-pin SOP package

• SOP-8L: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)

The AP2008 integrates Pulse-Width-Modulation (PWM) control

circuit into a single chip, mainly designs for power-supply

regulator. All the functions include an on-chip 0.77V reference

output, an error amplifier, an adjustable oscillator, a soft-start,

UVLO, SCP circuitry, and a push-pull output circuit. Switching

frequency is adjustable by trimming CT. During low VCC situation,

the UVLO makes sure that the outputs are off until the internal

circuit is operational normally.

Applications

• Backlight inverter

• LCD Monitor

• XDROM, XDSL Product

• DC/DC converters in computers, etc.

Ordering Information

AP 2008 S X - 13

Package PackingLead Free

13 : Tape & Reel

G : Green

S : SOP-8L

L : Lead Free

Device

Package

Code

Packaging

(Note 2)

13” Tape and Reel

Quantity Part Number Suffix

AP2008SL-13 S SOP-8L 2500/Tape & Reel -13

AP2008SG-13 S SOP-8L 2500/Tape & Reel -13

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 8

Shrnutí obsahu

Strany 1 - General Description

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 1 of 8 FEBRUAR

Strany 2 - ( Top View )

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 2 of 8 FEBRUAR

Strany 3 - Absolute Maximum Ratings

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 3 of 8 FEBRUAR

Strany 4 - PWM BUCK CONTROLLER

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 4 of 8 FEBRUAR

Strany 5 - Typical Application Circuit

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 5 of 8 FEBRUAR

Strany 6 - Typical Characteristics

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 6 of 8 FEBRUAR

Strany 7 - Marking Information

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 7 of 8 FEBRUAR

AP2008PWM BUCK CONTROLLER AP2008 Rev. 2 8 of 8 FEBRUAR

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