AP5724 Datasheet | Diodes Incorporated

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 ponents. A low 0.1V feedback voltage minimizes power loss in the current setting resistor for better efficiency SOT26 / TSOT23-6 Features (Top View) - High Efficiency: 84% Typical SW 1 6 GND - Fast 1.2MHz Switching Frequency - Current Limit and UVLO Protections VIN 2 5 FB - Internal Thermal Shutdown - Internal Over Voltage Protection - Integrated Soft-Start Function OVP 3 4...