SM6702 series
NIPPON PRECISION CIRCUITS INC.
PFM Step-up DC/DC Converter
OVERVIEW
The SM6702 series are step-up DC/DC ...
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 ...