General Description： Features：
Applications： Typical Application ：
Rs Resistor Value Selection：
CS05FTGR127N(0805，1％，TCR300,127 mΩ) CS05FTGR270(0805，1％，TCR300,270 mΩ
TYP.（mΩ） ILED (mA) 127 750 270 351.8
The AP9232 is a set-up DC-DC converter that delivers a regulated output current. The device switches at a 1MHz constant frequency,allowing for the use of small value external inductor and ceramic capacitors. The AP9232 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 95mV feedback voltage reduces the power loss in the Rs for better efficiency. During the shutdown mode, the feedback resistor Rs and the load are completely disconnected and the current consumption is reduced to less than 1uA.
l LED Power Efficiency: up to 90%
l Current Accuracy: ±10%
l Low Start-Up Voltage: 0.9V(ILED＝270mA)
l Low Hold Voltage:0.75V(ILED＝200mA)
l 1MHz Switching Frequency
l Uses small, Low Profile External Components
l Low RDS(ON) : 100mΩ (TYP.)
l Open LED Protection
l Over Temperature Protection
l Low Profile SOT-23-6 Package
l Pb-Free Package
l White LED Torch (Flashlight)
l White LED Camera Flash
l DSC(Digital Still Camera)Flash
l Cellular Camera Phone Flash
l PDA Camera Flash
l Camcorder Torch(Flashlight) Lamp
