isl8501 Intersil Corporation, isl8501 Datasheet - Page 11

• Manufacturer Part Number: isl8501
• Description: Triple Output Controller With 1a Standard Buck Pwm And Dual Ldos
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 25. SHUT DOWN CIRCUIT AT FULL LOAD, 100µs/DIV
EN 5V/DIV
EN 5V/DIV
IL 1A/DIV
IL 1A/DIV
IL 1A/DIV
SS 2V/DIV
FIGURE 23. SOFT-START AT FULL LOAD, 500µs/DIV
FIGURE 21. LOAD TRANSIENT, 200µs/DIV
PG_PWM 5V/DIV
LDO1 RIPPLE
20mV/DIV
11
PG_PWM 2V/DIV
PHASE 10V/DIV
I
Typical values are at T
Circuit of Figure 2. V
LDO1
LDO2 RIPPLE
20mV/DIV
VOUT1 RIPPLE
100mV/DIV
VOUT1 2V/DIV
VOUT1 2V/DIV
= 450mA, V
LDO2
ISL8501
IN
A
= 12V, VIN_LDO1 = VIN_LDO2 = V
= 1.8V, I
= +25°C. (Continued)
LDO2
FIGURE 26. SHUT DOWN CIRCUIT AT FULL LOAD, 100µs/DIV
EN 5V/DIV
EN 5V/DIV
EN 5V/DIV
LDO1
1V/DIV
LDO2 2V/DIV
FIGURE 24. SOFT-START AT FULL LOAD, 500µs/DIV
= 450mA, T
FIGURE 22. SOFT-START AT NO LOAD, 500µs/DIV
PG_LDO 5V/DIV
A
VOUT1 2V/DIV
= -40°C to +85°C unless otherwise noted.
OUT1
= 3.3V, I
PG_PWM 5V/DIV
PG_LDO 5V/DIV
OUT1
SS 2V/DIV
= 1A, V
LDO1 2V/DIV
LDO1 1V/DIV
LDO2 1V/DIV
LDO2
1V/DIV
LDO1
July 12, 2007
FN6500.1
= 1.2V,