Rainbow-electronics MAX8562 Manuale Utente Scaricare il pdf (Pagina 5)

MAX8560/MAX8561/MAX8562

4MHz, 500mA Synchronous Step-Down

DC-DC Converters in SOT and TDFN

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HEAVY-LOAD SOFT-START WAVEFORMS

MAX8560 toc13

20µs/div

200mA/div

SHDN

2V/div

OUT

1V/div

3Ω LOAD

LINE-TRANSIENT RESPONSE

MAX8560 toc14

2µs/div

200mA/div

500mV/div

OUT

20mV/div

5Ω LOAD

= 4.0V

= 3.5V

LOAD TRANSIENT RESPONSE

MAX8560 toc15

2µs/div

500mA/div

LOAD

500mA/div

OUT

50mV/div

20mA LOAD

500mA LOAD

20mA LOAD

OUTPUT-VOLTAGE TRANSIENT RESPONSE

(MAX8561)

MAX8560 toc16

40µs/div

200mA/div

ODI

2V/div

OUT

500mV/div

7.5Ω LOAD, L = 2.2µH

OUT

= 1.0V

OUT

= 1.5V

BYPASS-FET TRANSIENT RESPONSE

(MAX8562)

MAX8560 toc17

20µs/div

500mA/div

ODI

2V/div

OUT

2V/div

7.5Ω LOAD

OUT

= 1.2V

OUT

= V

LIGHT-LOAD SOFT-START WAVEFORMS

MAX8560 toc12

20µs/div

200mA/div

SHDN

2V/div

OUT

1V/div

100Ω LOAD

Typical Operating Characteristics (continued)

= 3.6V, V

OUT

= 1.2V, L = 1µH (LQH32C-IRO), C

OUT

= 2.2µF, T

= +25°C, unless otherwise noted.)

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Rainbow-electronics MAX8562 Manuale Utente Pagina 5

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