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UCC3921

Unitrode
Part Number UCC3921
Manufacturer Unitrode
Description Latchable Negative Floating Hot Swap Power Manager
Published Apr 30, 2020
Detailed Description Latchable Negative Floating Hot Swap Power Manager UCC1921 UCC2921 UCC3921 FEATURES • Precision Fault Threshold • Prog...
Datasheet PDF File UCC3921 PDF File

UCC3921
UCC3921

Overview
Latchable Negative Floating Hot Swap Power Manager UCC1921 UCC2921 UCC3921 FEATURES • Precision Fault Threshold • Programmable: Average Power Limiting, Linear Current Control, Overcurrent Limit and Fault Time • Fault Output Indication Signal • Automatic Retry Mode or Latched Operation Mode • Shutdown Control • Undervoltage Lockout • 250µs Glitch Filter on the SDFLTCH pin • 8-Pin DIL and SOIC DESCRIPTION The UCC3921 family of negative floating hot swap power managers provides complete power management, hot swap, and fault handling capability.
The IC is referenced to the negative input voltage and is powered through an external resistor connected to ground, which is essentially a current drive as opposed to the traditional voltage drive.
The onboard 10V shunt regulator protects the IC from excess voltage and serves as a reference for programming the maximum allowable output sourcing current during a fault.
All control and housekeeping functions are integrated and externally programmab...


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