DC/DC converter. ET9366 Datasheet
The ET9366 is a low noise, constant frequency charge pump DC/DC converter for white LED applications. The ET9366 is
capable of driving up to six channels of LEDs at preset 25mA per channel from a 2.5V to 6.0V input. The current sinks
may be operated individually parallel for driving higher current LEDs. Only one 0.47μF flying capacitors and two small
1μF capacitors (at Vcc and Vout) make this part ideally suited for small, batterypowered applications.
The serial digital input is used to enable, disable, and set current for each LED with 16 settings down to 1.5mA. Each
output of the ET9366 is equipped with builtin softstart circuitry prevents excessive inrush current during startup. A low
current shutdown feature disconnects the load from the input and reduces quiescent current to less than 1μA.
The ET9366 is available in a Pbfree, spacesaving 3.0×3.0mm 16pin QFN16 package.
VIN Range: 2.5V to 6.0V
Fully Programmable Current with Single Wire——16 Current Levels
Drives up to Six Channels of LEDs
Overcurrent and Overtemperature Protected
No Inductors, Low Noise Operation
Small Application Circuit
Automatic Soft Start
I Q <1μA in Shutdown
Undervoltage Lockout with Hysteresis
Cell Phone/Smart Phone/PDA
White LED Backlighting