ISL78229 Datasheet, PDF (23/71 Pages) Intersil Corporation – 2-Phase Boost Controller with Drivers

ISL78229
Performance Curves Unless otherwise specified, operating conditions for the oscilloscope waveforms are V_IN = 12V,
V_OUT = 36V and T_A = +25°C. (Continued)
220
210
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
-50 -25
IOC_LDO (mA)
IOCFB_LD O (mA)
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 47. INTERNAL LDO OVERCURRENT THRESHOLD AND ITS
FOLDBACK OC CURRENT vs TEMPERATURE
60
59
58
57
56
55
-50 -25
0
25
50
75
100 125 150
TEMPERATURE (°C)
FIGURE 48. V_IN OV RISING THRESHOLD vs TEMPERATURE
4.6
4.5
VPOR H_VCC (V)
4.4
VPORH_PVCC (V)
4.3
4.2
-50 -25
0
25
50
75
100 125 150
TEMPERATURE (°C)
FIGURE 49. PVCC/VCC POR RISING THRESHOLD vs TEMPERATURE
60
55
50
45
40
35
30
-50 -25
0
25
50
75 1 00 125 150
TEMPERATURE (°C)
FIGURE 50. OC1 VOLTAGE THRESHOLD (ACROSS RSEN) vs
TEMPERATURE
4.5
4.4
4.3
4.2
VPORL_PVCC (V)
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
3.3
VPORL_VCC (V)
3.2
3.1
3.0
-50 -25
0
25
50
75
100 125 150
TEMPERATURE (°C)
FIGURE 51. PVCC/VCC POR FALLING THRESHOLD vs TEMPERATURE
1.5
1.3
1.1
0.9
0.7
0.5
-50 -25
0
25
50
75 1 00 125 150
TEMPERATURE (°C)
FIGURE 52. ANALOG TRACKING REFERENCE SYSTEM ACCURACY vs
TEMPERATURE, MEASURED AT THE FB PIN,
V_TRACK = 0.5V
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FN8656.3
February 12, 2016