Rainbow-electronics MAX8640Z Manual do Utilizador descarregar pdf (Página 4)

MAX8640Y/MAX8640Z

500mA, 4MHz/2MHz Synchronous

Step-Down DC-DC Converters in SC70

4 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

= 3.6V, V

OUT

= 1.5V, MAX8640Z, L = Murata LQH32CN series, T

= +25°C, unless otherwise noted.)

SHDN

OUT

100mA/div

500mA/div

1V/div

0mA

5V/div

20μs/div

LIGHT-LOAD STARTUP WAVEFORM

(100Ω LOAD)

MAX8640Y/Z toc08

SHDN

OUT

100mA/div

500mA/div

1V/div

0mA

5V/div

20μs/div

HEAVY-LOAD STARTUP WAVEFORM

(5Ω LOAD)

MAX8640Y/Z toc09

OUT

20mV/div

AC-COUPLED

200mA/div

0mA

1V/div

20μs/div

LINE-TRANSIENT RESPONSE

(4V TO 3.5V TO 4V)

MAX8640Y/Z toc10

OUT

500mA/div

50m/div

AC-COUPLED

200mA/div

0mA

40μs/div

LOAD-TRANSIENT RESPONSE

(5mA TO 250mA TO 5mA)

MAX8640Y/Z toc11

OUT

500mA/div

100mV/div

AC-COUPLED

200mA/div

40μs/div

LOAD-TRANSIENT RESPONSE

(10mA TO 500mA TO 10mA)

MAX8640Y/Z toc12

1 2 3 4 5 6 7 8 9

MAX8640Y/MAX8640Z 1
500mA, 4MHz/2MHz Synchronous 1

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