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(V
IN
–V
OUT
) – V
12
NORMALIZED FREQUENCY
1246810
1.8
1.6
0.0
0.8
0.6
0.4
0.2
1.4
1.0
1.2
0؇C
25؇C
70؇C
Figure 12. Operating Frequency vs.
(V
IN
–V
OUT
)
TEMPERATURE – ؇C
155
120
0
100
25 70
85
150
145
140
135
SENSE VOLTAGE – mV
130
125
MAXIMUM THRESHOLD
Figure 15. Current Sense Threshold
Voltage
OPERATING FREQUENCY – kHz
GATE CHARGE CURRENT – mA
30
0
20 50 260
80 110 140 170 200 230
25
20
15
10
5
Qn+Qp = 50nC
Qn+Qp = 100nC
Figure 13. Gate Charge Supply
Current
OUTPUT VOLTAGE – V
OFF TIME – sec
80
30
0
0.3 0.5 5.01.0 1.5 2.0 2.5 3.0 3.3 3.5 4.0 4.5
70
40
20
10
60
50
5V
3.3V
Figure 14. Off Time vs. V
OUT
ADP1148, ADP1148-3.3, ADP1148-5–Typical Performance Characteristics
–6–
REV. A