SM6702-27HA

SM6702 series NIPPON PRECISION CIRCUITS INC. PFM Step-up DC/DC Converter OVERVIEW The SM6702 series are step-up DC/DC converter ICs, fabricated using NPC’s Molybdenum-gate CMOS process. They incorporate reference voltage source, error amplifier, oscillator, start-up circuit, PFM (Pulse Frequency Modulation) control circuit into a single chip. The only external components required are a Coil, Diode and output smoothing capacitors to form a step-up DC/DC converter. They employ PFM voltage control circuits to achieve high efficiency, stable constant-voltage output. FEATURES I I I I I I Power dissipation : 24 µW at VIN = 1.5 V, VOUT = 3.0 V, IOUT = 100 µA Start-up input voltage : 0.9 V (max) at RL = 30 kΩ Output voltage : 2.2 V to 3.3 V, available in 0.1 Vstep High efficiency : 85% at VIN = 1.5 V, VOUT = 3.0 V, IOUT = 1 mA Low ripple voltage Package : SOT23-3, SOT89-3 APPLICATIONS I I I I I PDA, Mobile IT equipment Digital Stil Camera Pager Constant-voltage sources for battery-operated equipment Local voltage sources ORDERING INFORMATION D e vice SM6702-33HB SM6702-30HA SM6702-30HB SM6702-27HA SM6702-27HB SM6702-24HA Output voltag e 1 3.3 V 3.0 V 3.0 V 2.7 V 2.7 V 2.4 V P ackag e S O T89-3 S O T23-3 S O T89-3 S O T23-3 S O T89-3 S O T23-3 1. Stepwise setting with a step of 0.1V in the range of 2.2V to 3.3V is available. NIPPON PRECISION CIRCUITS—1 SM6702 series PINOUT (Top view) SM6702−××HA(SOT23−3) SM6702−××HB(SOT89−3) 3 2 1 2 0 2 1 2 3 PIN DESCRIPTION Number S M ...