GL7203 Datasheet | Gleam

Gleam Power Management 3W High Power White LED Driver Description The GL7203 is a set-up DC-DC converter that delivers a regulated output current. the device switches at a 1.0MHz contant frequency, allowing for the use of small value external inductor and ceramic capacitors. The GL7203 is targeted to be used for driving loads up to 1A from a two-cell alkaline battery. The LED current can be programmed by the external current sense resistor, Rs. connected between the feedback pin (FB) and ground. A low 95m V 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. During the shutdown mode, the feedback resistor Rs and the load are pletely disconnected and current consumption is reduced to less than 1u A. Features LED Power Efficiency: up tp 90% Current Accuracy: ±5%(VIN=3.6 to 1.8V @VF=3.7V) Low Start-Up voltage: 0.9V (ILED=270m A) Low Hold Voltage: 0.75V...