Rainbow-electronics MAX8727 Manuel d'utilisateur télécharger pdf (Page 5)

MAX8727

TFT-LCD Step-Up DC-DC Converter

_______________________________________________________________________________________ 5

SOFT-START

LOAD

= 30Ω)

MAX8727 toc07

1ms/div

INDUCTOR

CURRENT

1A/div

OUT

5V/div

LOAD-TRANSIENT RESPONSE

LOAD

= 50mA TO 550mA)

MAX8727 toc08

1µs/div

INDUCTOR

CURRENT

1A/div

50mA

15V

OUT

5mV/div

AC-COUPLED

OUT

500mA/div

PULSED LOAD-TRANSIENT RESPONSE

LOAD

= 100mA TO 1.1A)

MAX8727 toc09

1µs/div

INDUCTOR

CURRENT

1A/div

0.1A

15V

OUT

5mV/div

AC-COUPLED

OUT

1A/div

SWITCHING WAVEFORMS

LOAD

= 600mA)

MAX8727 toc10

1µs/div

INDUCTOR

CURRENT

1A/div

10V/div

Typical Operating Characteristics (continued)

(Circuit of Figure 1. V

= 5V, V

MAIN

= 15V, T

= +25°C unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 11 12 13

PART TEMP RANGE PIN-PACKAGE 1
ABSOLUTE MAXIMUM RATINGS 2
ELECTRICAL CHARACTERISTICS 2
= 15V, T 5
(Circuit of Figure 1. V 5
Pin Description 6
Detailed Description 7
Applications Information 8
Output Capacitor Selection 9
Loop Compensation 10
Soft-Start Capacitor 10
PC Board Layout and Grounding 11
Chip Information 12
Package Information 13

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Rainbow-electronics MAX8727 Manuel d'utilisateur Page 5

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