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ADP1147AR-33 Datenblatt(PDF) 5 Page - Analog Devices

Teilenummer ADP1147AR-33
Bauteilbeschribung  High Efficiency Step-Down Switching Regulator Controllers
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
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ADP1147-3.3/ADP1147-5
–5–
REV. 0
(VIN – VOUT) – Volts
12
12
46
8
10
1.8
1.6
0
0.8
0.6
0.4
0.2
1.4
1.0
1.2
+70°C
+25°C
0°C
Figure 12. Operating Frequency vs.
(VIN–VOUT)
TEMPERATURE – C
155
150
130
0
25
100
70
85
145
140
135
MAXIMUM THRESHOLD
Figure 15. Current Sense Threshold
Voltage
OPERATING FREQUENCY – kHz
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
INPUT VOLTAGE – Volts
95
90
70
58
20
11
14
17
85
80
75
1 AMP
0.1 AMP
Figure 16. Efficiency vs. Input
Voltage at VO = 3.3 V; Figure 1
Circuit with ADP1147-3.3
+3.3V
+5V
OUTPUT VOLTAGE – Volts
80
30
0
0.3 0.5
5
1
1.5
2
2.5 3
3.3 3.5 4
4.5
70
40
20
10
60
50
Figure 14. Off-Time vs. VOUT
INPUT VOLTAGE – Volts
3.35
3.34
3.27
48
16
12
3.31
3.30
3.28
3.29
3.33
3.32
300mA
100mA
1 AMP
Figure 17. Output Voltage vs. Input
Voltage (VO = 3.3 V); Figure 1 Circuit
with ADP1147-3.3
LOAD CURRENT – mA
3.36
3.34
3.18
0
400
2000
800
1200
1600
3.26
3.24
3.22
3.20
3.32
3.28
3.30
VIN = 6 VOLTS
VIN = 12 VOLTS
Figure 18. Load Regulation (VO = 3.3 V);
Figure 1 Circuit with ADP1147-3.3


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