ISL8502 데이터 시트보기 (PDF) - Intersil
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ISL8502 Datasheet PDF : 19 Pages
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ISL8502
Typical Performance Curves
VIN = 12V, VOUT = 2.5V, IO = 2A, fs = 500kHz, L = 4.7µH, CIN = 20µF, COUT = 100µF + 22µF,
TA = +25° C, unless otherwise noted. (Continued)
EN1
5V/DIV
VOUT1
1V/DIV
IL1
2A/DIV
SS1
2V/DIV
FIGURE 25. SOFT-START AT NO LOAD
EN1
5V/DIV
2V PRE-BIASED
IL1
1A/DIV
VOUT1
0.5V/DIV
SS1
2V/DIV
FIGURE 26. START-UP WITH PRE-BIASED
EN1
5V/DIV
VOUT1
1V/DIV
IL1
1A/DIV
SS1
2V/DIV
FIGURE 27. SOFT-START AT FULL LOAD
PHASE1
10V/DIV
VOUT1
1V/DIV
IL1
1A/DIV
PGOOD1
5V/DIV
FIGURE 28. POSITIVE OUTPUT SHORT CIRCUIT
PHASE1
10V/DIV
VOUT1
2V/DIV
IL1
2A/DIV
SS1
2V/DIV
FIGURE 29. POSITIVE OUTPUT SHORT CIRCUIT (HICCUP
MODE)
PHASE1
10V/DIV
VOUT1
2V/DIV
IL1
2A/DIV
PGOOD1
5V/DIV
FIGURE 30. NEGATIVE OUTPUT SHORT CIRCUIT
11
FN6389.2
June 29, 2010
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