DESCRIPTION

· The UCC3919 family of hot swap power managers provides complete power management, hot swap, and fault handling capabilities.

· Features a duty ratio current limiting technique for peak load capability while limiting average power dissipation of the external pass transistor during fault conditions.

· Offers two reset modes: one with automatic retries at user-defined rates and another with latching off until manual reset.

· Includes an on-board charge pump circuit for gate voltage of an external N-channel power FET.

FEATURES

· Precision Fault Threshold.

· Charge Pump for Low R DS(on) High Side Drive.

· Differential Sense Inputs.

· Programmable Average Power Limiting.

· Programmable Linear Current Control.

· Programmable Fault Time.

· Fault Output Indicator.

· Manual and Automatic Reset Modes.

· Shutdown Control with Programmable Softstart.

· Undervoltage Lockout.

· Electronic Circuit Breaker Function.

APPLICATIONS

· Hot swap power management in various electronic systems.

· Fault handling and protection in power circuits.

· Control and management of external N-channel power FETs.

· Systems requiring programmable current control and power limiting.