Rainbow-electronics MAX1855 Manual do Utilizador descarregar pdf (Página 10)

MAX1716/MAX1854/MAX1855

High-Speed, Adjustable, Synchronous Step-Down

Controllers with Integrated Voltage Positioning

10 ______________________________________________________________________________________

10A

20A

1.55V

1.60V

1.50V

40µs/div

A. V

OUT

= 1.6V, 50mV/div

B. I

OUT

= 0.3A TO 18A, 10A/div

CIRCUIT #1, V

BATT

= 4.5V, PWM MODE

LOAD-TRANSIENT RESPONSE

BATT

= 4.5V)

MAX1716-27

10A

20A

0.94V

0.98V

1.00V

0.96V

40µs/div

A. V

OUT

= 1.0V, 20mV/div

B. I

OUT

= 0.3A TO 12A, 10A/div

CIRCUIT #3, V

BATT

= 4.5V, PWM MODE

LOAD-TRANSIENT RESPONSE

OUT(PROG)

= 1.0V)

MAX1716-28

10A

20A

1.60V

1.65V

1.55V

1.50V

40µs/div

A. V

OUT

= 1.6V, 50mV/div

B. I

OUT

= 0.3A TO 18A, 10A/div

CIRCUIT #4, V

BATT

= 15V, PWM MODE

LOAD-TRANSIENT RESPONSE

WITH CERAMIC OUTPUT CAPACITORS

MAX1716-29

Typical Operating Characteristics (continued)

(Circuit from Figure 1, components from Table 2, T

= +25°C, unless otherwise noted.)

10A

20A

1.55V

1.60V

1.50V

40µs/div

A. V

OUT

= 1.6V, 50mV/div; B. I

OUT

= 0.3A TO 18A, 10A/div

CIRCUIT #1, V

BATT

= 15V, SKIP MODE

LOAD-TRANSIENT RESPONSE

BATT

= 15V, SKIP MODE)

MAX1716-26

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 32 33

MAX1716/MAX1854/MAX1855 1

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