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7404TIBBN/a200avaiTRIPLE VOLTAGE REGULATOR


7404 ,TRIPLE VOLTAGE REGULATORELECTRICAL CHARACTERISTICS (Unless otherwise specified, please refer to the typical operating circ ..
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7404
TRIPLE VOLTAGE REGULATOR
1/11November 2000 ONLY TWO CELL NEED AS INPUT THREE REGULATED OUTPUT
1) HIGH EFFICENCY PFM DC/DC
CONVERTER 3.3V AT 200mA (87%
EFFICENCY)
2) VERY LOW NOISE AND VERY LOW
DROP VREG (3V AT 20mA)
3) VERY LOW NOISE AAND VERY LOW
DROP V REG (1.9V AT 20mA) LOGIC CONTROLLED ELECTRONIC
SHUTDOWN LOW BATTERY DETECTOR VIRTUAL GND PIN TEMPERATURA RANGE: -40 TO 85°C
ST3M01

TRIPLE VOLTAGE REGULATOR
SCHEMATIC DIAGRAM
ST3M01
2/11
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA
ORDER CODES
ST3M01
3/11
CONNECTION DIAGRAM (top view)
PIN DESCRIPTION
ST3M01
4/11
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, please refer to the typical operating

circut of the pag 1 for the external components values and connections. Unless otherwise noted SHDN =HIGH)
Note 1: For VIN < 1.9V the VO(LB) is out of regulation because of under dropout condition
Note 2: VO(DC/DC) = 3.5V force for an external DC source to avoid switching noise
ST3M01
5/11
DC/DC CONVERTER BLOCK DIAGRAM
LINEAR VREG BLOCK DIAGRAM
ST3M01
6/11
TEST CIRCUIT A
TEST CIRCUIT B
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