MAX746CSE データシートの表示（PDF） - Maxim Integrated

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MAX746CSE

High-Efficiency, PWM, Step-Down, N-Channel DC-DC Controller

Maxim Integrated 

High-Efficiency, PWM, Step-Down,

N-Channel DC-DC Controller

____________________________Typical Operating Characteristics (continued)

(Circuit of Figure 1a, TA = +25°C, unless otherwise noted.)

LOAD-TRANSIENT RESPONSE

A

B

LOAD-TRANSIENT RESPONSE

A

B

LINE-TRANSIENT RESPONSE

10V

8V

A

B

200µs/div

A: LOAD CURRENT, 0.1A TO 1.5A, 1A/div

B: VOUT RIPPLE, 50mV/div, AC-COUPLED

V+ = 10V

CONTINUOUS-CONDUCTION MODE

WAVEFORMS

A

B

0V

C

5µs/div

A : EXT VOLTAGE, 20V/div

B : INDUCTOR CURRENT 1A/div

C : VOUT RIPPLE, 50mV/div

V+ = 10V, IOUT = 3A

1ms/div

A: LOAD CURRENT, 0.1A TO 1.5A, 1A/div

B: VOUT RIPPLE, 50mV/div, AC COUPLED

V+ = 10V

DISCONTINUOUS-CONDUCTION

IDLE-MODE WAVEFORMS

A

B

C

20µs/div

A: EXT VOLTAGE, 10V/div

B: INDUCTOR CURRENT, 500mA/div

C: VOUT RIPPLE, 50mV/div, AC-COUPLED

V+ = 10V, IOUT = 75mA

500ms/div

A: V+ = 8V TO 10V, 2V/div

B: VOUT RIPPLE, 100mV/div

IOUT = 3A

MODERATE-LOAD, IDLE-MODE

WAVEFORMS

A

B

C

20µs/div

A: EXT VOLTAGE, 10V/div

B: INDUCTOR CURRENT, 500mA/div

C: VOUT RIPPLE, 50mV/div, AC-COUPLED

V+ = 6V, IOUT = 480mA

_______________________________________________________________________________________ 5

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