ST3M01 Datasheet, PDF (1/11 Pages) STMicroelectronics – TRIPLE VOLTAGE REGULATOR

ST3M01
TRIPLE VOLTAGE REGULATOR
s ONLY TWO CELL NEED AS INPUT
s THREE REGULATED OUTPUT
1) HIGH EFFICENCY PFM DC/DC
CONVERTER 3.3V AT 200mA (87%
EFFICENCY)
2) VERY LOW NOISE AND VERY LOW
DROP V_REG (3V AT 20mA)
3) VERY LOW NOISE AAND VERY LOW
DROP V_REG (1.9V AT 20mA)
s LOGIC CONTROLLED ELECTRONIC
SHUTDOWN
s LOW BATTERY DETECTOR
s VIRTUAL GND PIN
s TEMPERATURA RANGE: -40 TO 85°C
SO-14
SCHEMATIC DIAGRAM
Vin
150 µF
IN_Linear
On-Mode
SHDN
Off-Mode
Vref
100 nF
1 KΩ
November 2000
15 µH
IN_SW
Lx
DDCC//DCC
OUT DC/DC
150 µF
Linear A
Linear B
-
+
RReeff
OUT LA
1 µF
OUT LB
1 µF
Virtual GND
LBO
GND_SW
GND_Signal
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