ISL78227 Datasheet, PDF (21/43 Pages) Intersil Corporation – 2-Phase Boost Controller with Integrated Drivers

ISL78227
Performance Curves Unless otherwise specified, operating conditions for the oscilloscope waveforms are V_IN = 12V,
V_OUT = 36V and T_A = +25°C. (Continued)
10
9
8
7
6
5
4
3
2
1
0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 35. IC OPERATIONAL QUIESCENT CURRENT vs
TEMPERATURE, IC NOT SWITCHING
1.610
1.609
1.608
1.607
1.606
1.605
1.604
1.603
1.602
1.601
1.600
1.599
1.598
1.597
1.596
1.595
1.594
1.593
1.592
1.591
1.590
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 36. V_{REF_CC} SYSTEM ACCURACY vs TEMPERATURE,
MEASURED AT THE IMON PIN, VREF_CC = 1.6V
29.0
28.5
28.0
27.5
VIN = 55V
VIN = 4V
27.0
26.5
26.0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 37. IMON OUTPUT CURRENT ACCURACY
(CURRENT-SENSING SIGNAL OUTPUT) vs
TEMPERATURE, V_RSENx = 30mV, R_SETx = 665Ω (0.1%)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 39. INTERNAL LDO DROPOUT VOLTAGE vs TEMPERATURE,
80mA LOAD CURRENT ON LDO OUTPUT (PVCC)
1.610
1.609
1.608
1.607
1.606
1.605
1.604
1.603
1.602
1.601
1.600
1.599
1.598
1.597
1.596
1.595
1.594
1.593
1.592
1.591
1.590
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 38. VREF_1.6V SYSTEM ACCURACY vs TEMPERATURE,
MEASURED AT THE FB PIN
220
210
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
-50 -25
IO C_LDO (mA)
IOCFB_LD O (mA)
0
25
50
75
100
125 150
TEMPERATURE (°C)
FIGURE 40. INTERNAL LDO OVERCURRENT THRESHOLD AND ITS
FOLDBACK OVERCURRENT THRESHOLD vs
TEMPERATURE
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FN8808.2
February 24, 2016