MAX747CPD 데이터 시트보기 (PDF) - Maxim Integrated

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MAX747CPD

High-efficiency, PWM, step-down P-channel DC-DC controller

Maxim Integrated 

High-Efficiency PWM, Step-Down

P-Channel DC-DC Controller

____________________________Typical Operating Characteristics (continued)

CONTINUOUS-CONDUCTION MODE WAVEFORMS

DISCONTINUOUS-CONDUCTION IDLE-MODE WAVEFORMS

a

a

b

b

c

5µs/div

V+ = 9V, IOUT = 2.5A

a) EXT VOLTAGE, 10V/div

b) INDUCTOR CURRENT, 1A/div

c) VOUT RIPPLE, 50mV/div

LINE-TRANSIENT RESPONSE

a

c

20µs/div

V+ = 9V, IOUT = 125mA

a) EXT VOLTAGE, 10V/div

b) INDUCTOR CURRENT, 200mA/div

c) VOUT RIPPLE, 50mV/div

LOAD-TRANSIENT RESPONSE

a

5ms/div

IOUT = 2.0A

a) V+ = 6V to 12V, 5V/div

b) VOUT RIPPLE, 100mV/div

b

b

100µs/div

V+ = 9V, COUT = 430µF

a) LOAD CURRENT, 0.1A TO 2.5A, 1A/div

b) VOUT RIPPLE, 100mV/div

MODERATE LOAD, IDLE-MODE WAVEFORMS

a

b

c

5µs/div

V+ = 9V, IOUT = 560mA

a) EXT VOLTAGE, 5V/div

b) INDUCTOR CURRENT, 0.5A/div

c) VOUT RIPPLE 100mV/div

4 _______________________________________________________________________________________

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