ISL6237 Datasheet, PDF (11/35 Pages) Intersil Corporation – High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

ISL6237
Typical Performance Curves
Circuit of Figures 62, 63 and 64, no load on LDO, OUT1, OUT2, and REF, V_IN = 12V,
EN2 = EN1 = VCC, VBYP = 5V, PVCC = 5V, V_{EN_LDO} = 5V, T_A = -40°C to +100°C, unless
otherwise noted. Typical values are at T_A = +25°C. (Continued)
1.518
1.530
1.516
1.514
1.512
1.510
1.508
1.506
NO LOAD PWM
MID LOAD PWM
MAX LOAD PWM
1.525
1.520
1.515
1.510
1.505
NO LOAD PWM
MID LOAD PWM
MAX LOAD PWM
1.504
5 7 9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
FIGURE 15. V_OUT1 = 1.5V OUTPUT VOLTAGE REGULATION
vs V_IN (PWM MODE)
1.500
5 7 9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
FIGURE 16. V_OUT1 = 1.5V OUTPUT VOLTAGE REGULATION
vs V_IN (SKIP MODE)
3.340
3.335
3.330
NO LOAD PWM
3.325
3.320
3.315
MID LOAD PWM
MAX LOAD PWM
3.310
7 9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
FIGURE 17. V_OUT2 = 3.3V OUTPUT VOLTAGE REGULATION
vs V_IN (PWM MODE)
3.38
3.37
3.36
NO LOAD PWM
3.35
3.34
MAX LOAD PWM
3.33
3.32
3.31
MID LOAD PWM
3.30
7
9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
FIGURE 18. V_OUT2 = 3.3V OUTPUT VOLTAGE REGULATION
vs V_IN (SKIP MODE)
5.065
5.060
5.055
5.050
NO LOAD PWM
MAX LOAD PWM
MID LOAD PWM
5.045
5.040
7
9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
FIGURE 19. V_OUT1 = 5V OUTPUT VOLTAGE REGULATION vs
V_IN (PWM MODE)
11
5.14
5.12
5.10
5.08
MID LOAD PWM
5.06
NO LOAD PWM
5.04
5.02
7
MAX LOAD PWM
9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
FIGURE 20. V_OUT1 = 5V OUTPUT VOLTAGE REGULATION vs
V_IN (SKIP MODE)
FN6418.4
March 18, 2008