资 源 简 介
The AME5138 is a fixed off-TIme step-up DC/DC converterin a small 5-lead SOT-25 package. The AME5138is ideal for LCD panels requiring low current and high efficiencyas well as LED applicaTIons for cellular phone backlighTIng,PDAs,and other hand-held devices. The low 400nsoff-TIme allows the use of tiny external components.AME5138 is designed to drive up to four white LEDsin series with a constant current from a single Li-lon battery.To control LED brightness, the LED current can beadjusted by applying a PWM (pulse width modulated)signal with a frequency range of 100Hz to 50KHz to theEN pin.
