DESCRIPTION

The SMH4042 is a fully integrated hot swap controller that provides complete power control for add-in cards ranging in use for basic hot swap systems to high availability systems. It detects proper insertion of the card and senses valid supply voltage levels at the backplane. Utilizing external low on-resistance N-channel MOSFETs, card power is ramped by two high-side driver outputs that are slew-rate limited at 250V/s.

FEATURES

? Full Voltage Control for Hot Swap Applications CompactPCI High Availability Compatible

- On-board 15V High Side Driver Generation Allows use of Low On-resistance N-Channel FETS

- Undervoltage Lockout

- Electronic Circuit Breakers

- Card Insertion Detection

- Host VCC Detection

- Card Voltage Sequencing

? Flexible Reset Control

- Low Voltage Resets

- Host Reset Filtering

- Soft Reset

? Adjustable Power-on Slew Rate

? Supports Mixed Voltage Cards

? Integrated 4K Bit 2-Wire E2PROM Memory

- Data Download? Mode [Simplifies Downloading of Configuration Memory into Interface ASIC or MCU]

APPLICATIONS

? CompactPCI Hot Swap Control

? VME Live Insertion Control