Rainbow-electronics MAX8805Z Manual de usuario descargar pdf (Pagina 8)

MAX8805Y/MAX8805Z

600mA PWM Step-Down Converters in

2mm x 2mm WLP for WCDMA PA Power

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

IN1A

= V

IN1B

= V

IN2

= 3.6V, V

= 1.2V, V

LDO1

= 2.85V, V

LDO2

= 2.85V, R

= 7.5Ω, circuit of Figure 5, T

= +25°C, unless other-

wise noted.)

10μs/div

PA STEP-DOWN CONVERTER OUTPUT

VOLTAGE TRANSIENT RESPONSE

REFIN

500mV/div

500mA/div

MAX8805Y/Z toc26

0.5V

20μs/div

PA STEP-DOWN CONVERTER FORCED

BYPASS-FET TRANSIENT RESPONSE

2V/div

500mA/div

MAX8805Y/Z toc27

0.5V

1.2V

3.6V

10μs/div

PA STEP-DOWN CONVERTER LOAD

TRANSIENT RESPONSE (MAX8805Y)

500mA/div

100mV/div

MAX8805Y/Z toc25

AC-COUPLED

0mA

500mA

0mA

10μs/div

PA STEP-DOWN CONVERTER LOAD

TRANSIENT RESPONSE (MAX8805Z)

500mA/div

100mV/div

MAX8805Y/Z toc24

AC-COUPLED

0mA

500mA

0mA

10μs/div

PA STEP-DOWN CONVERTER LINE

TRANSIENT RESPONSE (MAX8805Z)

IN1

AC-COUPLED

50mV/div

500mV/div

200mA/div

MAX8805Y/Z toc22

4.0V

3.5V

4.0V

10μs/div

PA STEP-DOWN CONVERTER LINE

TRANSIENT RESPONSE (MAX8805Y)

IN1

AC-COUPLED

50mV/div

500mV/div

200mA/div

MAX8805Y/Z toc23

4.0V

3.5V

4.0V

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 20 21

MAX8805Y/MAX8805Z 1

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Rainbow-electronics MAX8805Z Manual de usuario Pagina 8

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