Diodes AP2008 - Manual

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 Packing Lead 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