SM6702 series

NIPPON PRECISION CIRCUITS—1

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 pro-

cess. They incorporate reference voltage source, error amplifier, oscillator, start-up circuit, PFM (Pulse Fre-

quency 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 cir-

cuits to achieve high efficiency, stable constant-voltage output.

FEATURES

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Power dissipation : 24

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Output voltage : 2.2 V to 3.3 V, available in 0.1 Vstep

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Low ripple voltage

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Package : SOT23-3, SOT89-3

APPLICATIONS

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PDA, Mobile IT equipment

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Digital Stil Camera

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Pager

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Constant-voltage sources for battery-operated equipment

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Local voltage sources

ORDERING INFORMATION

D e vice

1. Stepwise setting with a step of 0.1V in the range of 2.2V to 3.3V is available.

Pa ck ag e

SM6702-33HB

3.3 V

S O T89-3

SM6702-30HA

3.0 V

S O T23-3

SM6702-30HB

3.0 V

S O T89-3

SM6702-27HA

2.7 V

S O T23-3

SM6702-27HB

2.7 V

S O T89-3

SM6702-24HA

2.4 V

S O T23-3