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Texas Instruments 5962-8774201VEA
- Part No.:
- 5962-8774201VEA
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- -
- Datasheet:
-
5962-8774201VEA.pdf
- Description:
- UC1834-SP HIGH EFFICIENCY LINEAR
- Quantity:
- Payment:
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Inventory:4,458
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Product details
Overview
5962-8774201VEA from Texas Instruments is a high-efficiency linear regulator controller IC designed for low VIN–VOUT differential applications up to 5A using an external pass device. It supports both positive and negative regulator topologies, features adjustable current sense threshold (40–170 mV), under/over-voltage fault detection with programmable delay (30–60 ms/µF), and a 100mA crowbar output for over-voltage protection. It operates across −55°C to +125°C and is qualified per MIL-PRF-38535 Class V.
For engineers reviewing the 5962-8774201VEA datasheet, 5962-8774201VEA pinout, 5962-8774201VEA application, or 5962-8774201VEA equivalent, this part is critical for precision analog power systems requiring thermal shutdown, dual-polarity reference support (+1.5V and −2.0V), and fault-latched crowbar protection in harsh-environment military platforms.
Technical Context
The 5962-8774201VEA implements a transconductance error amplifier and current sense amplifier sharing a common output node (Pin 14), where small-signal voltage gain depends on load impedance (AVE/A ≈ ZL(f)/700Ω). Its fault monitoring circuit uses user-programmable RC delay on Pin 13 to reject transients before asserting Fault Alert (Pin 12) or latching O.V. Latch Output (Pin 15).
Thermal shutdown activates at 165°C and disables driver outputs; the O.V. latch can be reset by pulling Pin 15 below 0.4V, enabling recovery after fault clearance. The device integrates ±2.0V and +1.5V precision references referenced to VIN+ and VIN− respectively, supporting bidirectional current sensing and polarity-flexible regulator design without external reference ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| +1.5V Reference Output | 1.485–1.515V @ 25°C; enables stable feedback reference for error amplifier in positive regulators |
| −2.0V Reference Output | −2.04 to −1.96V @ 25°C (referred to VIN+); supports negative regulator feedback and current sense biasing |
| Current Sense Threshold | Adjustable 40–170 mV range via Pin 4; sets precise foldback current limit point for external pass transistor |
| Fault Delay | 30–60 ms/µF programmable via Pin 13 capacitor; prevents false triggering during input transients |
| Crowbar Gate Drive | −100 to −175 mA sink capability on Pin 19; directly triggers external SCR or MOSFET crowbar for over-voltage shutdown |
| Driver Output Current | 200–350 mA source/sink on Pins 15/16; drives gate/base of high-current external pass devices |
| Operating Temp Range | −55°C to +125°C; qualified for extended military temperature operation per MIL-PRF-38535 Class V |
Pinout & Package
5962-8774201VEA is housed in a 16-pin Ceramic Dual-In-Line Package (CDIP-J), hermetically sealed for high-reliability military use. Package dimensions comply with MIL-STD-1835, with 0.300-inch body width and 0.100-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 2 (VIN+) | Main supply input | Reference node for all internal voltages; maximum 40V absolute rating |
| Pin 4 (Threshold Adjust) | Current sense threshold control | Voltage setting determines current limit knee; 0.5V yields ~50 mV threshold |
| Pin 7 (Sense−) / Pin 8 (Sense+) | Differential current sense inputs | Accept bidirectional sense voltage across external shunt; support both supply polarities |
| Pin 12 (Fault Alert) | Open-collector fault indicator | Sinks up to 5 mA when under/over-voltage fault detected post-delay |
| Pin 14 (Compensation/Shutdown) | Error amp output & remote shutdown | Shared node for compensation network; logic-low disables drivers and resets O.V. latch if tied to Pin 15 |
| Pin 15 (O.V. Latch Output/Reset) | Over-voltage latch control | Drives external crowbar gate; latches low until reset below 0.4V |
| Pin 16 (Driver Source) | High-side driver output | Sources up to 350 mA to drive NPN base or N-channel MOSFET gate |
| Pin 19 (Crowbar Gate) | Crowbar trigger output | Sinks −175 mA to fire external SCR or thyristor during sustained over-voltage |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current sense threshold | Configurable 40–170 mV window enables precise current limiting across diverse pass device RDS(on) or hFE variations |
| Dual-polarity precision references | +1.5V and −2.0V references eliminate need for external reference ICs in bipolar regulator designs |
| Programmable fault delay | RC-timed delay on Pin 13 rejects short-duration line transients while preserving fast response to sustained faults |
| Integrated crowbar driver | −175 mA sink on Pin 19 directly interfaces with standard SCRs without buffer stages |
| MIL-PRF-38535 Class V qualification | Full screening per QML-V requirements ensures reliability in aerospace, defense, and downhole instrumentation |
Applications
| Avionics Power Distribution | Tactical Radio Transceiver Supply |
|---|---|
Use Scenario: Regulating 28V aircraft bus to stable ±15V analog rails for RF front-end amplifiers and ADC/DAC sections. IC Role / Device Role / Timing Role: Controller for discrete NPN pass transistors in dual-rail linear regulators with coordinated over-voltage crowbar protection. Use Value: Prevents RF stage damage during bus surge events via 100mA crowbar activation within <100 µs after latch assertion. | Use Scenario: Generating clean 5V and ±12V supplies for SDR FPGA I/O banks and RF synthesizer PLLs in manpack radios. IC Role / Device Role / Timing Role: High-precision linear regulator controller with thermal shutdown and fault alert signaling to host processor. Use Value: Maintains <±2 mV reference stability over −55°C to +125°C, ensuring PLL lock integrity across environmental extremes. |
| Ground Vehicle Mission Computers | Missile Seeker Electronics |
Use Scenario: Providing regulated 3.3V and 1.8V core supplies for radiation-tolerant PowerPC processors in armored vehicle C4I systems. IC Role / Device Role / Timing Role: Low-dropout linear controller driving external MOSFETs with foldback current limiting to survive load dumps. Use Value: Withstands 40V transient surges on VIN+ while maintaining regulation via 0.5V saturation voltage on driver outputs. | Use Scenario: Stabilizing 24V launch bus to ±5V sensor excitation and signal conditioning rails in infrared seeker gimbal electronics. IC Role / Device Role / Timing Role: Dual-reference linear regulator controller enabling single-supply design for op-amp-based analog front-ends. Use Value: Eliminates need for separate ±5V reference ICs by leveraging integrated +1.5V and −2.0V references with matched tempcos. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UC1834J/883B | Same die, identical electrical specs, but screened to MIL-STD-883 Class B instead of QML-V | Lacks full QML-V qualification; not approved for Class V flight-critical systems | Select 5962-8774201VEA for space-qualified or Class V mission-critical deployments |
| UC1834L/883B | Same functionality in 20-pin LCCC package; includes additional N/C pins and different pin mapping | Requires PCB redesign due to PLCC-20 footprint and relocated driver/crowbar pins | Choose 5962-8774201VEA for CDIP-16 compatibility and legacy board reuse |
Compared with UC1834J/883B and UC1834L/883B, the 5962-8774201VEA provides full QML-V qualification in the industry-standard CDIP-16 package, enabling drop-in replacement in existing military designs without layout changes while meeting stricter reliability and traceability requirements.
Availability
5962-8774201VEA is available at Aetrix Electronics and suitable for avionics power distribution, tactical radio transceiver supply, and ground vehicle mission computers requiring stable component supply under extended temperature and high-reliability conditions.
Supply support for 5962-8774201VEA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and aerospace markets.
The UC1834 family was developed specifically for high-reliability linear regulator control in military and aerospace platforms, emphasizing thermal robustness, dual-polarity operation, and fault-latched crowbar protection.
FAQ
What is the operating temperature range of the 5962-8774201VEA?
The 5962-8774201VEA is rated for operation from −55°C to +125°C and is fully qualified per MIL-PRF-38535 Class V for extended temperature performance. This range is confirmed in the TI Package Option Addendum and applies to all electrical specifications unless otherwise noted. The 5962-8774201VEA maintains specified reference accuracy, current sense threshold, and driver output capability across this full range.
Does the 5962-8774201VEA support negative voltage regulation?
Yes, the 5962-8774201VEA supports both positive and negative linear regulator configurations. Its dual precision references (+1.5V referenced to VIN− and −2.0V referenced to VIN+) and bidirectional current sense inputs (Pins 7 and 8) enable direct implementation of negative-output regulators using external PNP or PMOS pass devices. The 5962-8774201VEA datasheet explicitly confirms equal usability for either polarity in the Features section.
What is the function of Pin 19 (Crowbar Gate) on the 5962-8774201VEA?
Pin 19 on the 5962-8774201VEA is the Crowbar Gate output, which sinks up to −175 mA to directly trigger an external SCR or thyristor during a sustained over-voltage condition. When the over-voltage latch (Pin 15) is set, Pin 19 activates and remains active until the fault clears and the latch is reset. This function is documented in the Absolute Maximum Ratings and Electrical Characteristics tables for the 5962-8774201VEA.
How is the fault delay programmed on the 5962-8774201VEA?
The fault delay on the 5962-8774201VEA is programmed using an external capacitor connected to Pin 13 (Fault Delay). The delay time is 30–60 ms per microfarad, allowing designers to set rejection windows for transient over-voltage or under-voltage events. This RC timing network is described in the Functional Block Diagram and Electrical Characteristics table, and its behavior is verified in the Application Information section of the 5962-8774201VEA datasheet.
Is the 5962-8774201VEA pin-compatible with other UC1834 variants?
Yes, the 5962-8774201VEA is pin-compatible with other UC1834 variants in the CDIP-16 (J) package, including UC1834J/883B and UC1834J. All share identical pin functions, electrical characteristics, and connection diagrams per the TI Databook. The 5962-8774201VEA differs only in its QML-V qualification level and traceability documentation-not in pinout or interface behavior.
5962-8774201VEA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- -
- Current - Supply:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
5962-8774201VEA FAQ
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6.How does Aetrix verify that 5962-8774201VEA is sourced from the original manufacturer or authorized distributors?
All 5962-8774201VEA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 5962-8774201VEA meets industry standards.
7.What is the process for return or replacement of 5962-8774201VEA?
All 5962-8774201VEA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8774201VEA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 5962-8774201VEA part is unused and in its original packaging.
Return procedure for 5962-8774201VEA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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