Pb AP5724
WHITE LED STEP-UP CONVERTER
Description
Pin Assignments
The AP5724 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.
The device can drive 2 ~ 6
(Top View)
LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED currents resulting in uniform brightness and
SW 1
6 VIN
eliminates the need for ballast resistors.
For driving higher number of LEDs, AP5724 also supports a single feedback of parallel connected
GND 2
5 OVP
multiple strings of equal number of LEDs.
The AP5724 switches at 1.
2MHz that allows the use of tiny external
FB 3
74 EN
components.
A low 0.
1V feedback
voltage minimizes power los...