ISL6420B Datasheet, PDF (9/20 Pages) Intersil Corporation – Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

ISL6420B
Typical Performance Curves (Continued)
1.15
1.05
0.95
0.85
-40
-15
10
35
60
85
TEMPERATURE (°C)
FIGURE 3. I_OCSET vs TEMPERATURE
94
92
I_OUT = 5A
90
88
86
84
82
80
0
5
10
15
20
25
30
V_IN (V)
FIGURE 4. EFFICIENCY vs V_IN
+25°C, V_IN = 28V, I_IN = 1.367, I_OUT = 10A
FIGURE 5.
FIGURE 6.
98
96
V_IN = 5V
94
92
V_IN = 12V
90
88
86
84
82
80
0 1 2 3 4 5 6 7 8 9 10
LOAD (A)
FIGURE 7. EFFICIENCY vs LOAD CURRENT (V_OUT = 3.3V)
9
FN6901.0
April 27, 2009