ELM901FxA1A 2x Charge Pump LED Driver
ELM901FxA is a high current LED driver with internal automatic mode switch pump circuit of pass-through mode (1x mode) and boost charge mode (2x mode) and constant current drive circuit; maximum output current of ELM901 series can reach 1A.
ELM901 series is ideally suited for high luminosity white LED electrical applications which are powered by 1-cell lithium-ion/polymer battery.
The required external parts of ELM901 series can be limited to the minimum of 3 capacitors and 3 programming resistors. With 4mm x 4mm & 3mm x 3mm QFN package, ELM901 series is possible to be assembled within limited space.
The sink current, which can be switched to 3 different kinds by enable signal during operation,of LED pin is set by external programming resistors. For LED protection, it is possible to set high current lighting timer with external resistor; the light will be turned off forcibly by timer (3 options among 0.2 sec. to 1 sec.).
Built-in soft-start circuitry makes ELM901 series be able to limit excessive power during start-up and switch of 1x & 2x mode.
|Operation voltage||2.6 to 4.4V|
|Current consumption||300µA(1x), 9mA(2x)|
|Standby current||Max 1µA|
|Output current||Max 1A|
|LED protection||high current lightening timer|
|Internal LED constant current circuit||external resistance program|
|Soft-start||LED current start and switch of 1x & 2 x mode|
- Camera light supply
- High luminosity LED ﬂashlight