ncv8881 ON Semiconductor, ncv8881 Datasheet - Page 16

• Manufacturer Part Number: ncv8881
• Description: Ncv8881 1.5a Automotive Buck Regulator With Watchdog
• Manufacturer: ON Semiconductor

5.30
5.20
5.10
5.00
4.90
4.80
4.70
4.60
650
600
550
500
450
400
350
300
250
200
150
100
300
275
250
225
200
175
150
125
100
50
75
50
0
−40 −20
10
10
Figure 33. Soft−Start Time vs. Temperature
Figure 35. Switching Frequency vs. ROSC
Figure 37. Boot Delay vs. R
15
0
20
ROSC RESISTANCE (kW)
R
20
DLY
TEMPERATURE (°C)
25
RESISTANCE (kW)
Resistance
40
100
30
60
TYPICAL PERFORMANCE CHARACTERISTICS
80
35
DLY
100 120 140 160
Resistance
40
45
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1000
50
16
0.050
0.040
0.030
0.020
0.010
0.000
300
275
250
225
200
175
150
125
100
24
22
20
18
16
14
12
10
75
50
−40 −20
10
8
6
4
10
Figure 36. POR Delay vs. R
15
15
Figure 38. Watchdog Delay vs. R
Figure 34. IGNBUF Low Voltage vs.
0
20
20
R
R
20
DLY
DLY
TEMPERATURE (°C)
25
25
Temperature
RESISTANCE (kW)
RESISTANCE (kW)
Resistance
40
30
30
60
80
35
35
DLY
100 120 140 160
Resistance
40
40
DLY
45
45
50
50