AX3503数据手册Axelite中文资料规格书

描述 Description

AX3503 is a high efficiency monolithic synchronous buck regulator using a constantfrequency, current mode architecture. The device is available in an adjustable version.Supply current with no load is 35uA and drops to <1uA in shutdown. The 2.5V to 6V inputvoltage range makes AX3503 ideally suited for single Li-Ion, two to four AA battery-poweredapplications. 100% duty cycle provides low dropout operation, extending battery life inportable systems. PWM pulse skipping mode operation provides very low output ripplevoltage for noise sensitive applications. Switching frequency is internally set at 1.5MHz,allowing the use of small surface mount inductors and capacitors. The internal synchronousswitch increases efficiency and decreases need of an external Schottky diode. Low outputvoltages are easily supported with the 0.6V feedback reference voltage. AX3503 is availablein small SOT-23-5L and TDFN-6L (2*2) packages.