Preliminary Datasheet LP6201 Low Noise PFM DC/DC Regulator General Description Features The LP6201 Series are PFM Step-up DC/DC ICs with ultra low supply current by CMOS process and suitable for use with battery-powered instruments. The LP6201 IC consists of an oscillator, a PFM control circuit, a driver transistor (LX switch), a reference voltage unit, an error amplifier, resistors for voltage detection, and a LX switch protection circuit. A low ripple and high efficiency step-up DC/DC converter can be constructed of this LP6201 IC with only three external components. □ □ □ □ Low voltage start-up:0.9V Shut-down current:<1uA Output voltage:2.5-6.0V with 0.1V step High switch on current:800mA 260KHz frequency switching Available in SOT23,SOT23-5,SOT-89 Package Applications Ordering Information LP6201 - Up to 85% efficiency AlK. Battery products □ Pin Configurations F: Pb-Free Package Type B3: SOT23 B5: SOT23-5 X3: SOT-89 Output Voltage 30:3.0V 33:3.3V 36:3.6V 40: 4.0V 45:4.5V 50:5.0V Marking Information Please see website. Typical Application Circuit Vin Vout 33uH SS14 5 + SW 47uF VOUT EN 2 1 LP6201 3 NC + GND LP6201 –04 Ver. 1.4 Datasheet Cout 100uF 4 Dec.-2008 Page 1 of 9 Preliminary Functional Pin Description SOT23-5 1 2 3 4 5 Pin No. SOT23 X 3 X 1 2 SOT89 X 2 X 1 3 Datasheet LP6201 Pin Name Pin Function EN Vout NC GND LX Chip EN(Active High) Voltage output pin No connection Chip Power Ground Pin of switch Function Block Diagram Absolute Maximum Ratings LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Page 2 of 9 Preliminary Electrical Characteristics LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Datasheet LP6201 Page 3 of 9 Preliminary Typical Operating Characteristics LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Datasheet LP6201 Page 4 of 9 Preliminary LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Datasheet LP6201 Page 5 of 9 Preliminary LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Datasheet LP6201 Page 6 of 9 Preliminary Datasheet LP6201 Packaging Information LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Page 7 of 9 Preliminary LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Datasheet LP6201 Page 8 of 9 Preliminary LP6201 –04 Ver. 1.4 Datasheet Dec.-2008 Datasheet LP6201 Page 9 of 9