AP5724 Datasheet, PDF (2/16 Pages) Diodes Incorporated – WHITE LED STEP-UP CONVERTER

Ordering Information
AP5724
WHITE LED STEP-UP CONVERTER
AP 5724 XXX G - 7
Package
W : SOT26
FDC : DFN2020C-6
Green
G : Green
Packing
7 : Tape & Reel
Device
AP5724WG-7
AP5724FDCG-7
Package
Code
W
FDC
Packaging
(Note 2)
SOT26
DFN2020C-6
13” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
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.
Pin Assignments
(1) SOT26
( Top View )
SW ¹
6 VIN
GND 2
FB 3
5 OVP
74 _EN
(2) DFN2020C-6
( Top View )
SW 1
V_IN 2
OVP 3
6 GND
5 FB
4 EN
Pin Descriptions
Pin Name
SW
GND
FB
EN
OVP
V_IN
Description
Switch Pin. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.
GND pin.
Feedback Pin. Reference voltage is 0.1V. Connect cathode of lowest LED and resister here.
Calculate resistor value according to the formula: R_SET = 0.1V / ILED
Converter On/Off Control Input. A high input at EN turn on the converter, and a low input turns it
off. When not used, connect EN to the input source for automatic startup. The EN pin cannot be
left floating.
Output Voltage detect pin for over voltage protection.
Input Supply Pin. Must be locally bypassed with 1μF or 2.2μF to reduce input noise.
AP5724 Rev. 1
2 of 16
www.diodes.com
JUNE 2009
© Diodes Incorporated