Rainbow-electronics MAX1800 Manual de usuario descargar pdf (Pagina 7)

MAX1800

Digital Camera Step-Up

Power Supply

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V

INPUT

= 2.4V, T

= +25°C, unless otherwise noted.)

MAX1800 toc18

200 µs/div

LDO

LOAD

CURRENT

100mA/div

MAIN

OUTPUT

VOLTAGE

20mV/div

AC COUPLED

MAIN LOAD = 24Ω

MAIN OUTPUT RESPONSE DUE

TO LDO TRANSIENT

MAIN OUTPUT LOAD-TRANSIENT

RESPONSE

MAX1800 toc15

400 us/div

OUT

200mA/div

POUT

AC COUPLED

100mV/div

OUT

= 100µF

OUT

= 5V

LOAD = 10Ω

AUXILIARY CONTROLLER OUTPUT

LOAD-TRANSIENT RESPONSE

MAX1800 toc17

400 us/div

OUT

200mA/div

POUT

AC COUPLED

100mV/div

OUT

= 5V

AUXILIARY CONTROLLER STARTUP

RESPONSE

MAX1800 toc13

1ms/div

OUT

2V/div

0.5A/div

ON_

5V/div

OUT

= 5V

LOAD = 10Ω

3.3V

STARTUP SEQUENCE

MAX1800 toc14

1.00ms/div

ONM

5V/div

MAIN

OUTPUT

VOLTAGE

2V/div

LDO

OUTPUT

VOLTAGE

2V/div

AUXILIARY

OUTPUT

VOLTAGE

2V/div

MAIN LOAD = 24Ω

LDO LOAD = 8Ω

AUXILIARY LOAD = 10Ω

AUXILIARY OUTPUT VOLTAGE = 5V

LDO OUTPUT LOAD TRANSIENT

RESPONSE

MAX1800 toc16

100µs/div

LDO

OUTPUT

VOLTAGE

20mV/div

AC COUPLED

LDO

LOAD

CURRENT

100mA/div

1 2 3 4 5 6 7 8 9 10 11 12 ... 23 24

Digital Camera Step-Up 1
Power Supply 1

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