ISL78226 Datasheet, PDF (32/94 Pages) Intersil Corporation – Cycle-by-cycle peak current limiting

ISL78226
Typical Performance Curves All the performance curves are taken from the Evaluation Board (ISL78226EVAL1Z)
unless otherwise noted. (Continued)
13
50
12
45
11
10
40
9
+25°C
35
8
-40°C
30
+25°C
7
6
+125°C
25
-40°C
+125°C
5
0.8
1
1.2
1.4
1.6
1.8
2
TRACK VOLTAGE (V)
FIGURE 20. BAT12 VOLTAGE vs TRACK VOLTAGE (ANALOG TRACKING
MODE, BUCK MODE, DE MODE, PHASE DROP
DISABLED, F_clk = 100kHz)
20
0.8
1
1.2
1.4
1.6
1.8
2
TRACK VOLTAGE (V)
FIGURE 21. ANALOG BOOST TRACKING (ANALOG TRACKING MODE,
BOOST MODE, DE MODE, PHASE DROP DISABLED,
F_clk = 100kHz)
13
12
11
10
+25°C
9
8
-40°C
7
+125°C
6
5
30 35 40 45 50 55 60 65 70 75
TRACK PIN DUTY RATIO (%)
FIGURE 22. BAT12 OUTPUT VOLTAGE, 500kHz
13
12
11
10
9
8
+2 5°C
7
-40°C
6
+1 25°C
5
30 35 40 45 50 55 60 65 70 75
TRACK PIN DUTY RATIO (%)
FIGURE 23. BAT12 OUTPUT VOLTAGE (DIGITAL TRACKING MODE,
FTRK = 200kHz, BUCK MODE, DE MODE, PHASE DROP
DISABLED, F_clk = 100kHz)
13
12
11
10
9
8
+25°C
7
-40°C
6
+125°C
5
30 35 40 45 50 55 60 65 70 75
TRACK PIN DUTY RATIO (%)
FIGURE 24. BAT12 OUTPUT VOLTAGE, 150kHz
13
12
11
10
9
8
500 kHz
7
200 kHz
6
150 kHz
5
30 35 40 45 50 55 60 65 70 75
TRACK PIN DUTY RATIO (%)
FIGURE 25. BAT12 OUTPUT VOLTAGE (DIGITAL TRACKING MODE,
BUCK MODE, DE MODE, PHASE DROP DISABLED,
F_clk = 100kHz)
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FN8887.0
November 7, 2016