Rainbow-electronics MAX1636 Manual do Utilizador descarregar pdf (Página 7)

MAX1636

Low-Voltage, Precision Step-Down

Controller for Portable CPU Power

_______________________________________________________________________________________ 7

_____________________________Typical Operating Characteristics (continued)

(Circuit of Figure 1, V

= 7V, T

= +25°C, unless otherwise noted.)

OUT

50mV/div

5A LOAD CURRENT

10A

LOAD-TRANSIENT RESPONSE

(1.8V, PWM MODE)

MAX1636 TOC13

100µs/div

OUT

20mV/div

INDUCTOR

CURRENT

SWITCHING WAVEFORMS

(PWM MODE)

MAX1636 TOC14

1µs/div

OUT

50mV/div

INDUCTOR

CURRENT

SWITCHING WAVEFORMS

(PFM MODE)

MAX1636 TOC15

20µs/div

OUT

= 1.8V

OUT

1V/div

SHDN

5V/div

STANDBY AND STARTUP RESPONSE

OUT

= 1.8V, NO LOAD)

MAX1636 TOC17

1ms/div

OUT

20mV/div

INDUCTOR

CURRENT

SWITCHING WAVEFORMS

(DROPOUT OPERATION)

MAX1636 TOC16

5µs/div

OUT

= 5V

OUT

100mV/div

INDUCTOR

CURRENT

-5A

-10A

OVERVOLTAGE-PROTECTION WAVEFORMS

SHORTED TO V

OUT

THROUGH a 0.5Ω RESISTOR)

MAX1636 TOC18

10µs/div

1 2 3 4 5 6 7 8 9 10 11 12 ... 22 23

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