LP3164

Preliminary Datasheet LP3164 4-Channel Current Source White LED Driver General Description The LP3164 is a low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. It supports 4 white LEDs with regulated constant current for uniform intensity. The LP3164 maintains low dropout current regulators. The LP3164 requires a 50mV dropout at a 20mA load on each output to match the LED brightness. The brightness of LEDs can be tuned through a pulse width modulated signal at the PWM pin. The LP3164 is available in a QFN-16 package. Features 2.7V to 6V Input Voltage 20mA maxim sink current PWM tuned LED brightness through PWM pin(2KHz) Soft Start Function Built-in Thermal Protection IQ