isl8500 Intersil Corporation, isl8500 Datasheet - Page 8

• Manufacturer Part Number: isl8500
• Description: 2a Standard Buck Pwm Regulator
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 12. STEADY STATE OPERATION AT NO LOAD
1.814
1.813
1.812
1.811
1.810
1.809
1.808
1.807
1.806
3.330
3.328
3.326
3.324
3.322
3.320
3.318
3.316
3.314
FIGURE 10. V
FIGURE 8. V
0.0
0.0
(5µs/DIV)
12V
12V
OUT
OUT
0.5
0.5
IN
IN
REGULATION vs LOAD, 1.8V
REGULATION vs LOAD, 3.3V
5V
OUTPUT LOAD (A)
OUTPUT LOAD (A)
IN
8
25V
7V
1.0
1.0
25V
PHASE 5V/DIV
IN
IN
IN
VOUT RIPPLE
20mV/DIV
IL 0.5A/DIV
C
power stage and the source for the internal linear regulator that provides bias for the IC. Place a
ceramic capacitor from VIN to GND, close to the IC for decoupling (typical 10µF).” on page 6.
Unless otherwise noted, operating conditions are: T
(Continued)
OUT
1.5
1.5
= 100µF, C
OUT
OUT
2.0
2.0
2
ISL8500
= 2x22µF, I
OUT
FIGURE 13. STEADY STATE OPERATION AT FULL LOAD
PHASE 10V/DIV
2.506
2.505
2.504
2.503
2.502
2.501
2.500
2.499
2.498
4.99
4.98
4.97
4.96
4.95
4.94
4.93
4.92
4.91
= 0A to 2A. See “The input supply for the PWM regulator
FIGURE 9. V
FIGURE 11. V
0.0
0.0
VOUT RIPPLE
20mV/DIV
(1µs/DIV)
OUT
OUT
A
0.5
0.5
= +25°C, V
REGULATION vs LOAD, 2.5V
7V
REGULATION vs LOAD, 5V
12V
OUTPUT LOAD (A)
OUTPUT LOAD (A)
IN
12V
25V
IN
IN
5V
IN
IN
IN
1.0
1.0
= 12V, EN = VDD, L = 10µH,
25V
IN
IL 1A/DIV
1.5
1.5
December 10, 2007
OUT
OUT
FN6611.0
2.0
2.0