Typical Characteristics
REFERENCE OUTPUT VOLTAGE
vs.
POWER-SUPPLY VOLTAGE
0.785
0.78
0.775
0.77
0.765
0.76
0.755
4 6 8 10 12 14 16 18 20
Vcc-Power Supply Voltage (V)
AVERAGE SUPPLY CURRENT
vs.
AMBIENT TEMPERATURE
7
6
5
4
3
2
-50 -25 0 25 50 75 100
TA - Ambient Temperature (℃)
OSCILLATOR FREQUENCY
vs.
TIMING CAPACITANCE
350
300
250
200
150
100
50
0
100 600 1100 1600 2100 2600 3100 3600 4100 4600 5100 5600 6100 6600
CT-Timing Capacitor (pF)
AP2008
PWM BUCK CONTROLLER
AVERAGE SUPPLY CURRENT
vs.
POWER-SUPPLY VOLTAGE
5
4
3
2
1
0
0
4
8
12 16
20
Vcc - Power-Supply Voltgae (V)
VCT vs. FREQUENCY
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
100
200
Frequency (KHz)
VCT(min)
VCT(max)
300
35
30
25
20
15
10
5
0
45
SCP TIME-OUT PERIOD
vs.
SCP CAPACITANCE
90 135 180 225 270 315 360 405 450 495
Cscp - SCP Capacitance (nF)
AP2008 Rev. 2
6 of 8
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DECEMBER 2006
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