Applications:

Power source for battery-powered equipment

Power source for wireless mouse, wireless keyboard, toys

Power source for Cameras,camcorders, VCRs, PDAs

Power source for hand-held communication equipment

Descriptions:

AMS1309 Series is a PFM Step-up DC/DC converter IC with low supply current by CMOS process.

High frequency noise that occurs during switching is reduced by using advanced circuit designed,

output voltage is programmable in 0.1V steps between 2.0~7.0V and maximum frequency is 180

KHz(Typ.). A low ripple, high efficiency step-up DC/DC converter can be constructed of AMS1309

with only three external components. Also available is a CE(chip enable) function that reduce

power dissipation During shut-down mode. AMS1309 is suitable for use with battery-powered

instruments with low noise and low supply current.

Featuers:

Low ripple and low noise

Operating voltage range: 0.9V~6.5V

Output voltage range: 2.0V~7.0V(step 0.1V)

Output voltage accuracy: ±2.5%

Output Current: if Vin=3.0V and Vout=5.0V,then Iout=400mA

Low start voltage: 0.9V(at Iout=1mA)

Maximum oscillator frequency: 180KHz(Typ.)

High Efficiency: 85%(Typ.)

Packge:SOT23: SOT89

AMS1309

Advanced Monolithic Systems http://www.ams-semitech.com

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