ISL8501 Ver la hoja de datos (PDF) - Renesas Electronics
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ISL8501 Datasheet PDF : 19 Pages
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ISL8501
Typical Performance Curves Circuit of Figure 2. VIN = 12V, VIN_LDO1 = VIN_LDO2 = VOUT1 = 3.3V, IOUT1 = 1A, VLDO1 = 1.2V,
ILDO1 = 450mA, VLDO2 = 1.8V, ILDO2 = 450mA, TA = -40°C to +85°C unless otherwise noted.
Typical values are at TA = +25°C. (Continued)
PHASE 10V/DIV
IL 1A/DIV
LDO1 RIPPLE
20mV/DIV
VOUT1 RIPPLE
100mV/DIV
LDO2 RIPPLE
20mV/DIV
FIGURE 21. LOAD TRANSIENT, 200µs/DIV
EN 5V/DIV
VOUT1 2V/DIV
SS 2V/DIV
PG_PWM 5V/DIV
LDO1
1V/DIV
LDO2
1V/DIV
FIGURE 22. SOFT-START AT NO LOAD, 500µs/DIV
EN 5V/DIV
VOUT1 2V/DIV
IL 1A/DIV
PG_PWM 2V/DIV
SS 2V/DIV
FIGURE 23. SOFT-START AT FULL LOAD, 500µs/DIV
EN 5V/DIV
LDO1 2V/DIV
PG_LDO 5V/DIV
LDO2 2V/DIV
FIGURE 24. SOFT-START AT FULL LOAD, 500µs/DIV
EN 5V/DIV
VOUT1 2V/DIV
IL 1A/DIV
PG_PWM 5V/DIV
FIGURE 25. SHUT DOWN CIRCUIT AT FULL LOAD, 100µs/DIV
EN 5V/DIV
PG_LDO 5V/DIV
LDO1 1V/DIV
LDO2 1V/DIV
FIGURE 26. SHUT DOWN CIRCUIT AT FULL LOAD, 100µs/DIV
FN6500 Rev 1.00
July 12, 2007
Page 11 of 19
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