ISL6237 Datasheet, PDF (14/35 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)
177.5
177.0
176.5
176.0
175.5
175.0
174.5
174.0
173.5
173.0
7
9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
26.5
26.0
25.5
25.0
24.5
24.0
23.5
23.0
22.5
22.0
7
9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
FIGURE 33. STANDBY INPUT CURRENT vs V_IN
(EN = EN2 = 0, EN_LDO = VCC)
FIGURE 34. SHUTDOWN INPUT CURRENT vs V_IN
(EN = EN2 = EN_LDO = 0)
EN1 5V/DIV
V_OUT1 2V/DIV
IL1 2A/DIV
POK1 2V/DIV
FIGURE 35. START-UP V_OUT1 = 5V (NO LOAD, SKIP MODE)
EN1 5V/DIV
V_OUT1 2V/DIV
EN1 5V/DIV
V_OUT1 2V/DIV
IL1 2A/DIV
POK1 2V/DIV
FIGURE 36. START-UP V_OUT1 = 5V (NO LOAD, PWM MODE)
14
IL1 5A/DIV
POK1 2V/DIV
FIGURE 37. START-UP V_OUT1 = 5V (FULL LOAD, PWM MODE)
FN6418.4
March 18, 2008