ISL8012(2008) 데이터 시트보기 (PDF) - Intersil

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ISL8012
(Rev.:2008)

2A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator

Intersil 

ISL8012

Typical Operating Performance (Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN,

MODE = 0V, L = 1.5µH, C1 = 2x10µF, C2 = 2x10µF, IOUT = 0A to 2A). (Continued)

LX 2V/DIV

VOUT RIPPLE

20mV/DIV

IL 0.5A/DIV

FIGURE 15. STEADY STATE OPERATION AT NO LOAD (PWM),

(1µs/DIV)

LX 2V/DIV

VOUT RIPPLE

20mV/DIV

IL 0.5A/DIV

FIGURE 16. STEADY STATE OPERATION AT NO LOAD (PFM),

(1µs/DIV)

LX 2V/DIV

IL 0.5A/DIV

VOUT RIPPLE

20mV/DIV

FIGURE 17. STEADY STATE OPERATION WITH FULL LOAD,

(5µs/DIV)

LX 2V/DIV

VOUT RIPPLE

50mV/DIV

IL 0.5A/DIV

FIGURE 18. MODE TRANSITION CCM TO DCM, (5µs/DIV)

VOUT RIPPLE

50mV/DIV

LX 2V/DIV

IL 0.5A/DIV

FIGURE 19. MODE TRANSITION DCM TO CCM, (50µs/DIV)

9

IL 1A/DIV

VOUT RIPPLE

50mV/DIV

FIGURE 20. LOAD TRANSIENT (PWM), (50µs/DIV)

FN6616.0

March 11, 2008

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