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Product Detailed Parameters
- Description：IC HOT SWAP CTRLR GP 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Bulk
- Type：Hot Swap Controller
- Number of Channels：1
- Internal Switch(s)：No
- Applications：General Purpose
- Features：UVLO
- Programmable Features：Auto Retry, Circuit Breaker, Current Limit, Fault Timeout, Latched Fault
- Voltage - Supply：-48V
- Current - Output (Max)：-
- Operating Temperature：0°C ~ 70°C
- Current - Supply：1 mA
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The UCC3921DTR/81143 is a latchable negative floating hot-swap power manager manufactured by Texas Instruments. Designed for commercial temperature ranges, this integrated circuit manages power insertion in systems with negative voltage rails. It provides controlled turn-on and turn-off sequencing to prevent inrush current issues during hot-swap operations. The device supports single-channel operation for negative floating applications, ensuring safe power management without requiring external complex control logic.
Feature Summary
- Latchable hot-swap control mechanism for reliable power insertion
- Designed specifically for negative floating voltage rail applications
- Integrated power manager for single-channel hot-swap protection
Applications
- Negative voltage rail hot-swap power management
- Commercial electronic equipment power insertion control
- Systems requiring latchable negative floating power sequencing
Procurement Notes
Verify the specific suffix /81143 against official Texas Instruments documentation to confirm exact manufacturing lot or revision details. Ensure compatibility with negative floating input voltages within the specified range. Confirm RoHS compliance status through the manufacturer's latest certification summary before procurement.
Selection Notes
Select this component when designing systems that require hot-swap capability on negative voltage rails. It is suitable for commercial temperature environments. Verify that the latchable feature meets system safety requirements for power insertion events. Ensure the package type matches the PCB layout constraints.
Part Context
This part belongs to the UCC3921 series of hot-swap controllers from Texas Instruments. It is categorized under analog and mixed-signal power management ICs. The device addresses specific needs for negative voltage systems where standard positive-rail hot-swap controllers are not applicable.
Replacement Considerations
Check for newer alternatives listed in the Texas Instruments product lifecycle data. Verify pin-to-pin compatibility if substituting with other UCC3921 variants. Ensure replacement parts support the same negative floating architecture.
