SM6702 Datasheet, PDF (1/10 Pages) Nippon Precision Circuits Inc – PFM Step-up DC/DC Converter

NIPPON PRECISION CIRCUITS INC.
SM6702 series
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
I Power dissipation : 24 µW at V_IN = 1.5 V, V_OUT = 3.0 V, I_OUT = 100 µA
I Start-up input voltage : 0.9 V (max) at R_L = 30 kΩ
I Output voltage : 2.2 V to 3.3 V, available in 0.1 Vstep
I High efficiency : 85% at V_IN = 1.5 V, V_OUT = 3.0 V, I_OUT = 1 mA
I Low ripple voltage
I Package : SOT23-3, SOT89-3
APPLICATIONS
I PDA, Mobile IT equipment
I Digital Stil Camera
I Pager
I Constant-voltage sources for battery-operated equipment
I Local voltage sources
ORDERING INFORMATION
Device
Output voltage¹
SM6702-33HB
3.3 V
SM6702-30HA
3.0 V
SM6702-30HB
3.0 V
SM6702-27HA
2.7 V
SM6702-27HB
2.7 V
SM6702-24HA
2.4 V
1. Stepwise setting with a step of 0.1V in the range of 2.2V to 3.3V is available.
Package
SOT89-3
SOT23-3
SOT89-3
SOT23-3
SOT89-3
SOT23-3
NIPPON PRECISION CIRCUITS—1