UC2914N Hot Swap Controller - Equivalent & Substitute Parts

Part Overview

The UC2914N is a hot swap controller manufactured by Texas Instruments, designed for general-purpose power management applications. This single-channel device operates across a 5V to 35V supply range and integrates programmable features including auto retry, circuit breaker functionality, current limiting, fault timeout, and latched fault protection. The UC2914N is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing system support.

Substiute Parts

UC2914N

Texas InstrumentsIn Stock: 876UC2914N Datasheet

Current PartRFQ

TPS24710DGSR

Texas InstrumentsIn Stock: 17889TPS24710DGSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UC2914N is determined by the following critical parameters:

• Functional Type: Single-channel hot swap controller for general-purpose applications
• Supply Voltage Range: Must support the operational voltage window of the target system
• Channel Configuration: Single-channel architecture
• Programmable Features: Current limiting, fault timeout, and UVLO functionality
• Operating Temperature Range: -40°C to 85°C compatibility
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The TPS24710DGSR qualifies as a manufacturer-recommended substitute based on matching functional classification, single-channel architecture, overlapping temperature range, and equivalent compliance certifications. While the TPS24710DGSR operates within a reduced supply voltage range (2.5V ~ 18V), it maintains core hot swap controller functionality and programmable feature set suitable for applications within its specified voltage envelope.

Parameter Comparison

Engineering Selection Recommendations

The TPS24710DGSR is the manufacturer-recommended substitute for the obsolete UC2914N. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system replacements.

Selection between these devices depends on system voltage requirements. The UC2914N supports extended supply voltage operation (5V ~ 35V), while the TPS24710DGSR operates within a narrower range (2.5V ~ 18V). For applications operating within the 2.5V to 18V envelope, the TPS24710DGSR provides an active, production-supported alternative with reduced quiescent current consumption (1 mA versus 12 mA).

Mounting architecture differs between the two devices: the UC2914N uses through-hole DIP packaging, while the TPS24710DGSR employs surface-mount TFSOP/MSOP packaging. PCB layout and assembly process compatibility must be evaluated during design transition.

Frequently Asked Questions (FAQ)

Q: Can the TPS24710DGSR directly replace the UC2914N in existing designs?

A: Direct replacement requires verification of system supply voltage compatibility. The TPS24710DGSR operates within 2.5V to 18V; systems requiring supply voltages above 18V cannot use this substitute. Additionally, mounting type differs (surface mount versus through hole), requiring PCB redesign.

Q: What are the key functional differences between UC2914N and TPS24710DGSR?

A: Both devices function as single-channel hot swap controllers with programmable current limiting, fault timeout, and UVLO features. The primary differences are supply voltage range, quiescent current consumption, and package type. Feature sets for hot swap control remain functionally equivalent within the TPS24710DGSR voltage specification.

Q: Why is the UC2914N classified as obsolete?

A: The UC2914N has reached end-of-life status with Texas Instruments. The TPS24710DGSR represents the active product line continuation for hot swap controller applications, offering improved integration and reduced power consumption in a modern surface-mount package.

Q: Are there compatibility concerns with the package change from DIP to VSSOP?

A: Yes. The UC2914N uses 18-pin DIP through-hole packaging, while the TPS24710DGSR uses 10-pin VSSOP surface-mount packaging. This requires complete PCB redesign, including footprint changes, trace routing modifications, and assembly process adjustments. Pin-to-pin compatibility does not exist.

Q: What is the impact of reduced supply voltage range on system design?

A: Systems operating at supply voltages between 18V and 35V cannot use the TPS24710DGSR. For such applications, alternative hot swap controllers with extended voltage ratings must be evaluated. Verify your system's actual operating voltage before selecting a substitute.