R1250V301A Datasheet, PDF (7/14 Pages) RICOH electronics devices division – Negative Output Charge Pump Regulator(100mA)

R1250V××1A
TYPICAL CHARACTERISTICS
1) Supply Current at no load vs. Input Voltage
2.500
R1250V××1A
2.000
-4.0V Output
1.500
-3.0V Output
1.000
0.500
-2.0V Output
0.000
2.5 3.0 3.5 4.0 4.5 5.0 5.5
Input Voltage VIN (V)
3) Input Current vs. Output Load Current
R1250V301A
120
100
80
60
40
20
0
0
20 40 60 80 100 120
Output Load Current IOUT (mA)
5) Oscillator Frequency vs. Input Voltage
R1250V201A
320
310
300
290
280
270
260
250
240
2.5
3
3.5
4 4.5
5 5.5
Input Voltage VIN (V)
2) Supply Current at no load vs. Temperature
R1250V××1A
2.5
-4.0V Output
2.0
1.5
1.0
-2.0V Output
-3.0V Output
0.5
0.0
-50 -25 0
25 50 75 100
Temperature Topt (°C)
4) Efficiency vs. Load Current
R1250V××1A
100
-4.0V Output
80
60
-2.0V Output
40
-3.0V Output
20
VIN=lOutputl+1V
0
0
20 40
60 80 100 120
Output Load Current IOUT (mA)
6) Oscillator Frequency vs. Temperature
R1250V201A
300
298
296
294
292
290
288
286
284
282
280
-50 -25 0
25 50 75 100
Temperature Topt (°C)
6