AMS1309 Datasheet, PDF (1/11 Pages) Advanced Monolithic Systems Ltd – Low ripple and low noise

AMS1309
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
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
1
Advanced Monolithic Systems http://www.ams-semitech.com