ISL8023 데이터 시트보기 (PDF) - Intersil
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ISL8023 Datasheet PDF : 20 Pages
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ISL8023, ISL8024
Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 5V, EN = VIN,
SYNC = VIN, L = 1.0µH, C1 = 22µF, C2 = 2 x 22µF, IOUT = 0A to 4A. (Continued)
EN 2V/Div
VOUT 1V/Div
EN 2V/Div
VOUT 1V/Div
IL 1A/Div
PG 2V/Div
FIGURE 23. SOFT-START AT NO LOAD (PFM)
IL 1A/Div
PG 5V/Div
FIGURE 24. SOFT-START WITH PRE-BIASED 1V
EN 2V/Div
VOUT 1V/Div
IL 2A/Div
PG 5V/Div
FIGURE 25. SOFT-START AT FULL LOAD
EN 2V/Div
VOUT 1V/Div
IL 1A/Div
PG 5V/Div
FIGURE 26. SOFT-DISCHARGE SHUTDOWN
PHASE 5V/Div
VOUT RIPPLE 20mV/Div
IL 0.5A/Div
SYNC 5V/Div
FIGURE 27. STEADY STATE OPERATION AT NO LOAD WITH
FREQUENCY = 2MHz
PHASE 5V/Div
VOUT RIPPLE 20mV/Div
IL 2A/Div
SYNC 5V/Div
FIGURE 28. STEADY STATE OPERATION AT FULL LOAD WITH
FREQUENCY = 2MHz
11
FN7812.2
May 17, 2012
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