ISL8502 Intersil Corporation, ISL8502 Datasheet - Page 10

• Manufacturer Part Number: ISL8502
• Description: 2.5A Synchronous Buck Regulator
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 19. POWER DISSIPATION vs LOAD (VOUT = 2.5V
FIGURE 21. POWER DISSIPATION vs LOAD (V
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
2.5
2.0
1.5
1.0
0.5
0.0
2.5
2.0
1.5
1.0
0.5
0.0
3
0
0
FIGURE 23. VCC REGULATION vs V
4
500kHz)
500kHz)
5
6
7
OUTPUT LOAD (A)
OUTPUT LOAD (A)
14V
NO LOAD
10
1
1
8
IN
V
14V
IN
9
IN
(V)
9V
10
IN
11
100mA LOAD
V
T
9V
A
IN
IN
12
= +25° C, unless otherwise noted. (Continued)
= 12V, V
OUT
IN
5V
7V
2
2
13
IN
IN
= 5V
OUT
14 15
= 2.5V, I
ISL8502
O
= 2A, fs = 500kHz, L = 4.7µH, C
FIGURE 20. POWER DISSIPATION vs LOAD (VOUT = 3.3V
2.5
2.0
1.5
1.0
0.5
0.0
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
FIGURE 24. MASTER TO SLAVE OPERATION
0
0
FIGURE 22. VCC LOAD REGULATION
500kHz)
50
IN
100
V
OUT1
= 20µF, C
OUTPUT LOAD (A)
20mV/DIV
1
I VCC (mA)
RIPPLE
0.5µs
PHASE1
150
5V
5V/DIV
OUT
14V
9V
= 100µF+22µF,
IN
IN
200
5V
IN
V
PHASE2
OUT2
5V/DIV
January 17, 2007
20mV/DIV
2
250
RIPPLE
FN6389.0
300