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| ISL6236A Datasheet, PDF (18/37 Pages) Intersil Corporation – High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers | |||
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ISL6236A
Typical Performance Curves
Circuit of Figures 66, 67 and 68, no load on LDO, OUT1, OUT2, VREF3, and REF, VIN = 12V,
EN2 = EN1 = VCC, VBYP = 5V, PVCC = 5V, VEN_LDO = 5V, TA = -40°C to +100°C, unless
otherwise noted. Typical values are at TA = +25°C. (Continued)
EN2 5V/DIV
VOUT2 0.5V/DIV
IL2 2A/DIV
EN2 5V/DIV
VOUT2 0.5V/DIV
IL2 2A/DIV
POK2 2V/DIV
FIGURE 57. START-UP VOUT1 = 1.05V (NO LOAD,
PWM MODE)
POK2 2V/DIV
FIGURE 58. START-UP VOUT1 = 1.05V (FULL LOAD,
PWM MODE)
EN2 5V/DIV
VOUT2 0.5V/DIV
VOUT1 2V/DIV
POK2 5V/DIV
POK1 5V/DIV
FIGURE 59. DELAYED START-UP (VOUT1 = 1.5V,
VOUT2 = 1.05V, EN1 = REF)
EN1 5V/DIV
VOUT2 2V/DIV
VOUT1 2V/DIV
POK1 OR POK2 5V/DIV
FIGURE 61. SHUTDOWN (VOUT1 = 1.5V, VOUT2 = 1.05V,
EN2 = REF)
18
VOUT1 2V/DIV
EN1 500mV/DIV
VOUT2 500mV/DIV
POK1 5V/DIV
POK2 5V/DIV
FIGURE 60. DELAYED START-UP (VOUT1 = 1.5V,
VOUT2 = 1.05V, EN2 = REF)
LGATE1 5V/DIV
VOUT1 RIPPLE 50mV/DIV
IL1 5A/DIV
VOUT2 RIPPLE 20mV/DIV
FIGURE 62. LOAD TRANSIENT VOUT1 = 1.5V (PWM)
FN6453.3
March 18, 2008
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