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Product Detailed Parameters
- Description：UCC3918 0-4A, 3-6V LOW RDSON SIN
- Series：*
- Mfr：Unitrode
- Package：Bulk
- Type：-
- Number of Channels：-
- Internal Switch(s)：-
- Applications：-
- Features：-
- Programmable Features：-
- Voltage - Supply：-
- Current - Output (Max)：-
- Operating Temperature：-
- Current - Supply：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The UCC3918DP is a hot swap power manager manufactured by Texas Instruments, originally developed by Unitrode. It is designed for positive voltage applications with a 5 V supply and operates within a commercial temperature range of 0 °C to +70 °C. The device utilizes a surface mount SOIC-16 package measuring 9.9 mm in length, 3.91 mm in width, and 1.58 mm in height. This component functions as a low on-resistance hot swap controller for managing power insertion.
Feature Summary
- Provides integrated hot swap power management capabilities
- Features low on-resistance internal pass element
- Supports positive floating single supply operation
Applications
- Hot swap power insertion systems
- Positive voltage power distribution networks
- Commercial electronic equipment requiring controlled power sequencing
Procurement Notes
Verify the manufacturer designation carefully, as the component was originally developed by Unitrode but is now produced by Texas Instruments. Confirm the specific suffix (DP) matches the required SOIC-16 package and commercial temperature grade. Ensure the datasheet revision aligns with design requirements, noting that TI documentation may reference the original Unitrode heritage.
Selection Notes
Select this component for applications requiring simple, low-cost hot swap protection without programmable current limits. It is suitable for fixed-voltage systems where basic overcurrent and thermal protection are sufficient. Consider alternative models like the UCC3912 if programmable parameters are needed. Verify compatibility with the system's positive voltage rail and operating temperature constraints.
Part Context
This part belongs to the UCC391x family of hot swap controllers. While related to other variants like the UCC3913D or UCC3917D, the UCC3918DP is specifically configured for positive voltage applications. The family shares common hot swap principles but differs in voltage polarity support and feature sets such as programmability.
Replacement Considerations
Public confirmed substitutes include UCC3918DPG4 and UCC3918DPTR. These variants offer identical functionality with differences in packaging options or tape-and-reel configurations.
