ISL62870 Datasheet, PDF (14/16 Pages) Intersil Corporation – PWM DC/DC Voltage Regulator Controller

ISL62870
Typical Performance
100
95 ^{VIN = 8V}
90
85
V_IN = 12.6V
80
V_IN = 19V
75
70
65
60
55
50
0 2 4 6 8 10 12 14 16 18 20
I_OUT (A)
FIGURE 13. EFFICIENCY AT V_OUT = 1.1V
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0
V_IN = 19V
V_IN = 12.6V
V_IN = 8V
2 4 6 8 10 12 14 16 18 20
I_OUT (A)
FIGURE 14. LOAD REGULATION AT V_OUT = 1.1V
1.0
0.8
0.6
V_IN = 12.6V
0.4
0.2
0.0
-0.2
V_IN = 19V
-0.4
V_IN = 8V
-0.6
-0.8
-1.0
0 2 4 6 8 10 12 14 16 18 20
I_OUT (A)
FIGURE 15. SWITCHING FREQUENCY AT V_OUT = 1.1V
EN
SREF
VOUT
PGOOD
FIGURE 16. START-UP, V_IN = 12.6V, V_OUT = 1.05V, LOAD = 10A
EN
SREF
VOUT
PGOOD
FIGURE 17. START-UP INTO 750mV PRE-BIASED OUTPUT,
V_IN = 12.6V, V_OUT = 1.05V, LOAD = 10A
14
EN
PGOOD
20us
SREF
VOUT
FIGURE 18. SHUT-DOWN, V_IN = 12.6V, V_OUT = 1.05V,
LOAD = 50mΩ
FN6708.0
August 14, 2008