GENERAL DESCRIPTION

The ADM1177 is an integrated hot swap controller that offers digital current and voltage monitoring via an on-chip, 12-bit analog-to-digital converter (ADC), communicated through an I2C® interface.

FEATURES

Allows safe board insertion and removal from

a live backplane

Controls supply voltages from 3.15 V to 16.5 V

Precision current sense amplifier

Precision voltage input

12-bit ADC for current and voltage readback

Charge pumped gate drive for external N-channel FET

Adjustable analog current limit with circuit breaker

±3 accurate hot swap current limit level

Fast response limits peak fault current

Automatic retry or latch-off on current fault

Programmable hot swap timing via TIMER pin

Soft start pin for reference adjustment and programming of

initial current ramp rate

Active high ON pin

I2C fast mode-compliant interface (400 kHz maximum)

10-lead MSOP

APPLICATIONS

Power monitoring/power budgeting

Central office equipment

Telecommunications and data communications equipment

PCs/servers