AP8800 Datasheet, PDF (1/11 Pages) Diodes Incorporated – 350mA LED Step-Down Converter

AP8800
350mA LED Step-Down Converter
Features
General Description
• LED driving current up to 350mA
• Compatible with 12V & 24V standard systems
• High efficiency up to 92%
• High switching frequency up to 0.6MHz
• PWM/DC input for dimming control
• Built-in soft-start function
• Built-in output open-circuit protection
• SOP-8L, MSOP-8L and DFN3030-10 are available in
“Green” Molding Compound (No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)
The AP8800 is a step-down DC/DC converter designed to drive
LEDs with a constant current. The device can drive up to seven
LEDs, depending on the forward voltage of the LEDs, in series
from a voltage source of 8V to 28V. Series connection of the
LEDs provides identical LED currents resulting in uniform
brightness and eliminates the need for ballast resistors. The
AP8800 switches at frequency up to 0.6MHz. This allows the
use of small size external components, hence minimizing the
PCB area needed.
Maximum output current of AP8800 is set via an external resistor
connected between the VIN and SET input pins. Dimming is
achieved by applying either a DC voltage or a PWM signal at the
CTRL input pin. An input voltage of 0.2V or lower at CTRL shuts
down the output at SW and puts the device into a low-current
standby state.
Applications
• Commercial & Industrial lighting
• Small LCD panel backlight
• Architecture Detail lighting
• Appliances interior lighting
Ordering Information
AP 8800 XX G - X
Package
S : SOP-8L
M8 : MSOP-8L
FN : DFN3030-10
Green
G : Green
Packing
7/ 13 : Tape & Reel
Device
AP8800SG-13
AP8800M8G-13
AP8800FNG-7
Package
Code
S
M8
FN
Packaging
(Note 2)
SOP-8L
MSOP-8L
DFN3030-10
7”/13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
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.
AP8800 Rev. 1
1 of 11
www.diodes.com
MARCH 2009
© Diodes Incorporated