UCC3917DTRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC3917DTRG4 is a single-channel positive floating hot-swap voltage controller from Texas Instruments with adjustable current and voltage thresholds, designed for safe board insertion and removal in live backplane systems. Packaged in a 16-pin SOIC with commercial temperature range. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3917DTRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Positive floating hot-swap controller with adjustable threshold for flexible power supply voltage control without fixed reference to ground
- Adjustable overcurrent and overvoltage thresholds via external resistors enabling customized protection for diverse system requirements
- Single-channel design in compact 16-pin SOIC package ideal for per-slot hot-swap control in rackmount and backplane systems
- RoHS compliant JESD-609 e4 construction with commercial temperature range for standard operating environments
Applications
The UCC3917DTRG4 is designed for hot-swap power management in telecom, networking, and server backplane systems where cards must be inserted and removed without powering down the system. It controls an external N-channel or P-channel MOSFET to gradually ramp up power to a new board, limiting inrush current that could otherwise damage connectors, components, or cause power bus drooping. Typical applications include PCI/PCI-X/PCIe slot power control, ATCA blade server power management, and industrial modular equipment requiring live insertion capability.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | HOT SWAP CONTROLLER |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC3917DTRG4:
Texas Instruments Adjustable, 1 Channel, BICMOS, PDSO16
Frequently Asked Questions
What does floating hot-swap mean in the UCC3917DTRG4?
The term floating hot-swap refers to the fact that the UCC3917DTRG4 operates relative to the positive supply rail rather than ground, making it compatible with systems where the controller and power MOSFET gate drive are referenced to a high-side floating voltage. This architecture allows the device to control a series pass element in the positive supply path while monitoring current through an external sense resistor, enabling hot-swap control in positive voltage bus systems.
How does the UCC3917DTRG4 protect against inrush current during hot insertion?
The UCC3917DTRG4 limits inrush current by controlling the gate voltage ramp rate of an external power MOSFET through a charge pump or gate drive output. An external capacitor on the gate drive pin sets the turn-on ramp rate, which controls how quickly the MOSFET turns on and thus the rate of voltage rise on the board. The adjustable current threshold, set by an external sense resistor and threshold-setting resistor, triggers a fault if the actual inrush exceeds the programmed limit.
What package does the UCC3917DTRG4 use?
The UCC3917DTRG4 is packaged in a 16-pin SOIC (Small Outline Integrated Circuit), as indicated by the DTR suffix and JESD-30 code R-PDSO-G16. The SOIC package has 0.05-inch (1.27mm) lead pitch and a standard body width of 3.9mm. The G4 suffix denotes RoHS-compliant Green packaging meeting JESD-609 e4 halogen-free and lead-free requirements.
What are the key protection features of the UCC3917DTRG4?
The UCC3917DTRG4 provides overcurrent protection via an adjustable current sense threshold, overvoltage protection with adjustable threshold using an external resistor divider, and undervoltage lockout to prevent operation below minimum input voltage. It also includes a FAULT output pin that asserts when a protection event is detected, allowing the system controller to be notified of the fault condition and take corrective action such as disabling the slot or alerting system management firmware.
Can the UCC3917DTRG4 be used with both N-channel and P-channel MOSFETs?
The UCC3917DTRG4 is specifically designed as a positive floating hot-swap controller, optimized for use with external N-channel MOSFETs in the high-side switch configuration. The gate drive output floats with the supply rail and provides sufficient gate-to-source voltage to fully enhance an N-channel MOSFET for low on-resistance. This is more power-efficient than P-channel solutions, particularly at higher voltages where P-channel MOSFETs with adequate current ratings become expensive and large.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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