Rainbow-electronics MAX8884Z Bedienungsanleitung PDF herunterladen (Seite 8)

MAX8884Y/MAX8884Z

700mA DC-DC Step-Down Converters

with Dual 300mA LDO in 2mm x 2mm CSP

8 _______________________________________________________________________________________

REFBP SOFT-START

REFBP

= 0.15μF

MAX8884Y/Z toc28

100μs/div

LDO1_EN

REFBP

LDO1

1V/div

2V/div

1V/div

REFBP SOFT-START

REFBP

= 0.033μF

MAX8884Y/Z toc27

100

s/div

LDO1_EN

REFBP

LDO1

1V/div

2V/div

1V/div

LDO1, LDO2 STARTUP

AND SHUTDOWN RESPONSE

MAX8884Y/Z toc26

400μs/div

LDO1

LDO1_EN

LDO2_EN

LDO2

2V/div

LDO1, LDO2 LOAD TRANSIENT

RESPONSE NEAR DROPOUT

MAX8884Y/Z toc25

20μs/div

LDO1

LDO2

LDO1

AC-COUPLED

10mV/div

AC-COUPLED

10mV/div

50mA/div

1mA 1mA

40mA

1mA 1mA

40mA

IN2

= V

LDO2

+ 200mV

Typical Operating Characteristics (continued)

= V

IN1A

= V

IN1B

= V

IN2

= 3.6V, V

BUCK

= 1.2V, V

LDO1

= 1.8V, V

LDO2

= 2.8V, MAX8884YEVKIT, T

= +25°C, unless otherwise noted.)

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MAX8884Y/MAX8884Z 1

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