MITSUBISHI (Dig./Ana. INTERFACE)
M51995AP/FP
SWITCHING REGULATOR CONTROL
ON duty VS.
F/B TERMINAL INPUT CURRENT
50
(fOSC=500kHz)
RON=18kΩ
ROFF=20kΩ
40
30
Ta=-30°C
Ta=25°C
20
Ta=85°C
10
0
0
0.5
1.0
1.5
2.0
2.5
F/B TERMINAL INPUT CURRENT IF/B(mA)
10000
OSCILLATING FREQUENCY VS. CF
TERMINAL CAPACITY
1000
RON=22kΩ
ROFF=12kΩ
100 RON=36kΩ
ROFF=6.2kΩ
RON=24kΩ
ROFF=20kΩ
10
1
1
120
110
3 10 3 100 3 1000 3 10000
CF TERMINAL CAPACITY(pF)
OSCILLATING FREQUENCY VS.
AMBIENT TEMPERATURE
RON=24kΩ
ROFF=20kΩ
CF=330pF
100
90
UPPER & LOWER LIMIT VOLTAGE OF OSC
VS. AMBIENT TEMPERATURE
RON=18kΩ
5.2 ROFF=20kΩ
4.8
fOSC=500kHz
fOSC=200kHz
fOSC=100kHz
4.4
4.0
fOSC=100kHz
2.2
fOSC=200kHz
fOSC=500kHz
2.0
1.8
-60 -40 -20 0 20 40 60 80 100
AMBIENT TEMPERATURE Ta(°C)
100
90
80
70
60
50
40
30
20
10
0
1
700
600
ON duty VS. ROFF
RON=75kΩ
51kΩ
36kΩ
24kΩ
22kΩ
18kΩ
15kΩ
10kΩ
3
5 7 10
3
5 7 100
ROFF(kΩ)
OSCILLATING FREQUENCY VS.
AMBIENT TEMPERATURE
RON=24kΩ
ROFF=20kΩ
CF=47pF
500
400
300
80
-60
-40
-20
0
20 40 60 80 100
AMBIENT TEMPERATURE Ta(°C)
200
-60 -40 -20 0 20 40 60 80 100
AMBIENT TEMPERATURE Ta(°C)
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