ISL8009A 查看數據表（PDF） - Intersil
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ISL8009A Datasheet PDF : 13 Pages
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ISL8009A
Typical Operating Performance (Unless otherwise noted, operating conditions are: TA = +25°C,
VVIN = 5V, EN = VIN, RSI = SKIP = 0V, L = 2.2µH, C1 = 20µF,
C2 = 20µF, IOUT = 0A) (Continued)
2.0
1.5
NO LOAD
1.0
0.75A LOAD
1.5A LOAD
0.5
0.0
LX 2V/DIV
VOUT RIPPLE
20mV/DIV
-0.5
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
FIGURE 13. OUTPUT VOLTAGE REGULATION vs VIN
SKIP MODE
IL 0.2A/DIV
FIGURE 14. STEADY STATE OPERATION AT NO LOAD
(PWM), 1µs/DIV
LX 2V/DIV
VOUT RIPPLE
20mV/DIV
IL 0.2A/DIV
FIGURE 15. STEADY STATE OPERATION AT NO LOAD
(PFM), 1µs/DIV
LX 2V/DIV
IL 0.5A/DIV
VOUT RIPPLE
20mV/DIV
FIGURE 16. STEADY STATE OPERATION WITH FULL
LOAD, 1µs/DIV
LX 2V/DIV
IL 1A/DIV
VOUT RIPPLE
50mV/DIV
FIGURE 17. LOAD TRANSIENT (PWM), 200µs/DIV
7
LX 2V/DIV
IL 1A/DIV
VOUT RIPPLE
50mV/DIV
FIGURE 18. LOAD TRANSIENT (PFM), 200µs/DIV
FN6656.2
November 19, 2009
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