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AME5258 Datasheet

Part Number AME5258
Manufacturers AME
Logo AME
Description 600mA Synchronous Buck Converter
Datasheet AME5258 DatasheetAME5258 Datasheet (PDF)

www.datasheet4u.com AME AME5258 n General Description The AME5258 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.2V, 1.8V, 2.5V and 3.3V. Supply current with no load is 300µA and drops to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the AME5258 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low.

  AME5258   AME5258






600mA Synchronous Buck Converter

www.datasheet4u.com AME AME5258 n General Description The AME5258 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.2V, 1.8V, 2.5V and 3.3V. Supply current with no load is 300µA and drops to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the AME5258 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications. At very light load, the AME5258 will automatically skip pulses in pulse skip mode operation to maintain output regulation. The AME5258 is simple to use. As with standard LDO's,Input and output capacitor are required. The only other element is a small, low cost, 2.2µH inductor.Low output voltages are easily supported with the 0.6V feedback reference voltage. And 100% duty cycle when Vin approaches Vout. 1.5MHz, 600mA Synchronous Buck Converter n Applications l Cellular Phones l Digital Cameras l Portable Electronics l USB Devices l MP3 Players l LDO Replacement n Typical Application Fixed Output Voltage 2.2µH VIN C IN 4.7µF CER IN SW VOUT AME5258 EN GND OUT C OUT 10µF CER n Features l High Efficiency: Up to 96% l 600mA Output Current at VIN=3V l 2.5V to 5.5V Input Voltage Range l 1.5MHz Constant Frequency Operatio.


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