Network Interface Card Smart Regulator

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5

Typical Operating Characteristics (continued)

MAIN OR STANDBY

LINE-TRANSIENT RESPONSE

MAX1810-11

4.3V

200

µs/div

5V

10mV/div

AC-COUPLED

MAIN OR STANDBY

LOAD-TRANSIENT RESPONSE

MAX1810-12

10mA

40

µs/div

200mA

20mV/div

AC-COUPLED

MAIN-T0-STANDBY TRANSITION

WAVEFORM

MAX1810-13

20ms/div

2V/div

50mV/div

AC-COUPLED

MAIN OR STANDBY TO AUX

TRANSITION WAVEFORM

MAX1810-14

10ms/div

5V

3.3V

100mV/div

DC-COUPLED

MAIN OR STBY

2.4V

Pin Description

PIN

NAME

FUNCTION

1

STBY

+5V Standby Input

2

MAIN

+5V Main Input

3

OUT

+3.3V Output. Bypass with a 1

µF capacitor to GND.

4

AUX

+3.3V Auxilliary Input

5–8

GND

Ground. Must connect pins 5 through 8 together to ground plane for power dissipation.