AP2004_09 Datasheet, PDF (1/8 Pages) Diodes Incorporated – PWM BUCK CONTROLLER

Features
• PWM Buck Control Circuitry
• Operating voltage can be up to 27V
• Under voltage Lockout (UVLO) Protection
• Short Circuit Protection (SCP)
• Soft-start circuit
• Variable Oscillator Frequency -- 300Khz Max
• 1.25V voltage reference Output
• 8-pin SOP package
• SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
AP2004
PWM BUCK CONTROLLER
General Description
The AP2004 integrates Pulse-Width-Modulation (PWM) control
circuit into a single chip, mainly designs for power-supply
regulator. All the functions include an on-chip 1.25V 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 operates normally.
Applications
• Backlight inverter
• LCD Monitor
• CDROM, XDSL Product
• DC/DC converters in computers, etc.
Ordering Information
AP 2004 S X - 13
Package
S : SOP-8L
Lead Free
L : Lead Free
G : Green
Packing
13 : Tape & Reel
Device
AP2004SL-13
Lead-free
AP2004SG-13
Package
Code
S
S
Packaging
(Note 2)
SOP-8L
SOP-8L
13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
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.
AP2004 Rev. 3
1 of 8
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated