DESCRIPTION
The LED current can be programmed by the external current sense resistor, Rs, connected between the feedback pin (FB) and ground. A low 95mV feedback voltage reduces the power loss in the Rs for better efficiency. With its internal 2A, 100mΩ NMOS switch, the device can provide high efficiency even at heavy load. LED dimming can be done by using a DC voltage applied to the FB pin and a pulse width modulation (PWM) signal applied to the FB pin or SHDN pin. During the shutdown mode, the feedback resistor Rs and the load are completely disconnected and the current consumption is reduced to less than 1uA. The GL7201 is available in the 6-lead SOT-23-6 package. FEATURES
LED Power Efficiency: up to 90% Internal 2A MOSFET Switch 1.0MHz Switching Frequency Low Start-Up Voltage: 0.9V Low RDS(ON) : 100mΩ (TYP.) Open LED Protection Over Temperature Protection Low Profile SOT-26 Package Application White LED Torch (Flashlight) White LED Camera Flash DSC(Digital Still Camera)Flash Cellul...
