RCR2561SK

The RCR2561SK is one member of the RCR2561 family which is designed as the PFM step-up DC/DC converter that consists of an oscillator, a PFM control circuit, a driver Pin EXT to external MOSFET, a reference voltage unit, an error amplifier. Also RCR2561SK can be used in (1)Battery-powered equipment; (2)Cameras, Camcorders, VCRs, PDAs, pagers, electronic data banks, and hand-held communication equipment.

Features of the RCR2561SK are:(1)low start-up voltage, 1.1V at 1mA; (2)minimal number of external components ( only an inductor, a diode, a MOSFET and two capacitors ); (3)adjustable version ( VREF = 1.25V VREF = 2.7V or VREF = 3.3V ); (4)ultra low input current ( 12uA at switch off ); (5)+/- 2 % high output voltage accuracy; (6)low ripple and low noise; (7)75% efficiency with low cost inductor; (8)SOT23-5L small packages.

The absolute maximum ratings of the RCR2561SK can be summarized as:(1)Output Voltage: -0.3 to 10 V;(2)EXT Pin Voltage: -0.3 to 10 V;(3)EXT Pin Current: ±30 mA;(4)Power Dissipation (TA = 25): 250 mW;(5)Operating Temperature Range: -40 to +125 ;(6)Storage Temperature Range: -65 to +150 .

The electrical characteristics of the RCR2561SK can be summarized as:(1)Output Voltage Accuracy: -2 to +2 %;(2)Input Voltage: 10 V;(3)Start-up Voltage: 1.0 to 1.1 V;(4)Efficiency (VOUT 3.5V): 75 %;(5)Efficiency (VOUT >3.5V): 85 %;(6)Maximum Oscillator: 80 to 160 kHz;(7)Oscillator Duty Cycle: 70 to 85 %. If you want to know more information such as the electrical characteristics about the RCR2561SK, please download the datasheet in www.seekic.com or www.chinaicmart.com .