LM5068MM-4/NOPB

-10V 至 -80V 热插拔控制器 8-VSSOP -40 to 105

DESCRIPON

The LM5068 hot-swap controller provides intelligent control of power supply connections during the insertion and removal of circuit cards powered by live system backplanes.

The LM5068 provides both in-rush current control and short-circuit protection functions, and limits power supply transients in the backplane caused by the insertion of additional circuit cards. The LM5068 controls the external N-Channel MOSFET to provide programmable load current limiting and circuit breaker functions using a single external current sense resistor. The LM5068 issues a power good PWRGD signal at the conclusion of a successful power-on sequence. Input over-voltage or under - voltage fault conditions will cancel the PWRGD indication.

FEATURES

• Safe Module Insertion and Removal from Live Backplanes

• In-Rush Current Limiting for Safe Board Insertion into Live Backplanes

• Fast Response to Over-Current Fault Conditions with Active Current Limiting

• -10V to -90V Input Range

• Programmable Under-Voltage/Over-Voltage Shutdown Protection with Adjustable Hysteresis

• Programmable Multi-Function Timer for Board Insertion De-Bounce Delay

• Fault Timer Avoids Nuisance Trips Caused by Short Duration Load Transients

• Active Gate Clamping During Initial Power Application

• Available in both Latched Fault and Automatic Re-Try Versions

• Available with either Active HIGH or Active LOW Power Good Flag

APPLICATIONS

• - 48V Power Modules

• Central Office Switching

• Distributed Power Systems

• Electronic Circuit Breaker

• PBX Systems

• Negative Power Supply Control