isl8500 Intersil Corporation, isl8500 Datasheet - Page 7

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

Typical Performance Curves
1.206
1.205
1.204
1.203
1.202
1.201
1.200
1.199
1.198
100
100
90
80
70
60
50
40
30
20
90
80
70
60
50
40
30
20
FIGURE 6. V
0.0
0.0
0.0
12V
FIGURE 4. EFFICIENCY vs LOAD, 25V
FIGURE 2. EFFICIENCY vs LOAD, 5V
OUT
1.8V
3.3V
OUT
OUT
OUT
0.5
1.2V
0.5
0.5
1.2V
REGULATION vs LOAD, 1.2V
OUT
OUT
OUTPUT LOAD (A)
OUTPUT LOAD (A)
5V
OUTPUT LOAD (A)
12V
OUT
1.5V
7
IN
1.5V
OUT
1.0
1.0
1.0
OUT
2.5V
5V
OUT
IN
25V
2.5V
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
OUT
IN
1.5
1.5
1.5
OUT
IN
IN
= 100µF, C
OUT
1.8V
OUT
2.0
2.0
2.0
2
ISL8500
= 2x22µF, I
OUT
1.510
1.509
1.508
1.507
1.506
1.505
1.504
1.503
1.502
100
= 0A to 2A. See “The input supply for the PWM regulator
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
FIGURE 5. POWER DISSIPATION vs LOAD, 2.5V
90
80
70
60
50
40
30
20
FIGURE 7. V
0.0
0.0
0.0
FIGURE 3. EFFICIENCY vs LOAD, 12V
1.2V
OUT
2.5V
OUT
1.5V
0.5
A
0.5
0.5
OUT
12V
= +25°C, V
OUT
REGULATION vs LOAD, 1.5V
IN
OUTPUT LOAD (A)
OUTPUT LOAD (A)
OUTPUT LOAD (A)
3.3V
12V
1.8V
IN
OUT
25V
OUT
IN
1.0
1.0
1.0
IN
= 12V, EN = VDD, L = 10µH,
5V
5V
OUT
IN
25V
5V
1.5
1.5
1.5
IN
IN
December 10, 2007
IN
OUT
OUT
FN6611.0
2.0
2.0
2.0