ADN8830
1,000
990
V
DD
= 5V
R
FREQ
= 150k
45
40
35
V
DD
= 5V
T
A
= 25 C
USING CIRCUIT SHOWN IN FIGURE 1
SWITCHING FREQUENCY (kHz)
SUPPLY CURRENT (mA)
–15
10
35
TEMPERATURE ( C)
60
85
980
970
960
950
940
930
920
–40
30
25
20
15
10
5
0
200
300
400
500
600
700
800
SWITCHING FREQUENCY (kHz)
900
1,000
TPC 7. Switching Frequency vs. Temperature
TPC 10. Supply Current vs. Switching Frequency
70
2.06
THERM FAULT UPPER THRESHOLD (V)
65
60
55
50
45
40
35
30
–40
OFFSET VOLTAGE ( V)
2.05
2.04
2.03
–15
10
35
TEMPERATURE ( C)
60
85
2.02
–40
–15
10
35
TEMPERATURE ( C)
60
85
TPC 8. Offset Voltage vs. Temperature
TPC 11. Open Thermistor Fault Threshold vs. Temperature
200
0.26
100
THERM FAULT LOWER THRESHOLD (V)
OFFSET VOLTAGE ( V)
0
0.25
–100
–200
0.24
–300
–400
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
COMMON-MODE VOLTAGE (V)
1.6
1.8
2.0
0.23
–40
–15
10
35
TEMPERATURE ( C)
60
85
TPC 9. Offset Voltage vs. Common-Mode Voltage
TPC 12. Short Thermistor Fault Threshold vs.
Temperature
–6–
REV. C
AD [ ANALOG DEVICES ]
