ELM915BA 50V输入 1A开关 恒流LED驱动器
ELM915BA is capable of driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage.
ELM915BA is Buck and Buck-Boost controller with internal switching which can stress 1A peak current stress. The controller operating wide input voltage range from 6V to 50V.
ELM915BA consists of an output switch and a high-side output current sensing circuit that uses an external resistor to set the nominal average output current.
Through applying an external control signal to the LD/PWM pin, it can adjust the output current to above or below the set value.
The LD/PWM pin will accept either a DC voltage or a PWM waveform to provide a continuous or a gated output current. The LD/PWM also provide soft start function to prevent inrush current.
The SOT-26 small package makes ELM915BA suitable for LED MR-16 bulb applications.
|Linear or PWM dimming|
|Cycle by cycle current limit|
|Constant off time control|
|Off time period programmable|
|Over temperature protection||155±30°C|
|Over voltage protection||53V±5%|
|Internal NMOS switch||54V|
|NMOS with peak current||1A|
|Low quiescent current||＜250µA|
|Wide input voltage range||6V to 50V|
- MR16 and general lighting
- Automotive lighting
- Low voltage Industrial lighting
- Battery charging
- LED back lighting
- Illuminated signs