MAX1623 データシートの表示（PDF） - Maxim Integrated

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MAX1623

3A, Low-Voltage, Step-Down Regulator with Synchronous Rectification and Internal Switches

Maxim Integrated 

3A, Low-Voltage, Step-Down Regulator with

Synchronous Rectification and Internal Switches

____________________________ Typical Operating Characteristics (continued)

(Circuit of Figure 2, TA = +25°C, unless otherwise noted.)

START-UP AND SHUTDOWN TRANSIENT

START-UP AND SHUTDOWN TRANSIENT

LOAD-TRANSIENT RESPONSE

(FBSEL = REF)

A

B

C

1ms/div

VIN = 5V, VOUT = 3.3V, ILOAD = 3A,

WAVEFORM AVERAGED

A: VOUT, 2V/div

B: IIN, 1A/div

C: VSHDN, 5V/div

A

B

C

1ms/div

VIN = 5V, VOUT = 3.3V, ILOAD = 2A,

WAVEFORM AVERAGED

A: VOUT, 2V/div

B: IIN, 1A/div

C: VSHDN, 5V/div

ILOAD

0 to 3A

VOUT

50mV

AC-COUPLED

f = 300kHz

20µs/div

LOAD-TRANSIENT RESPONSE

(FBSEL = REF)

LINE-TRANSIENT RESPONSE

ILOAD

0 to 2A

VOUT

50mV

AC-COUPLED

f = 300kHz

20µs/div

VIN = 4.5V

to 5.5V

AC-COUPLED

(1V/div)

VOUT = 3.3V

AC-COUPLED

IOUT = 1.5A

(20mV/div)

20µs/div

LINE-TRANSIENT RESPONSE

VIN = 4.5V

to 5.5V

AC-COUPLED

(1V/div)

VOUT = 3.3V

AC-COUPLED

IOUT = 100mA

(20mV/div)

20µs/div

_______________________________________________________________________________________ 5

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