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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Texas Instruments 5962-8774001FA

Name: 5962-8774001FA
Brand: Texas Instruments
SKU: 5962-8774001FA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 5962-8774001FA

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: 16-CFlatPack

Datasheet:: 5962-8774001FA.pdf

Description:: UC1543 POWER SUPPLY SUPERVISORY

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Product details

Overview

5962-8774001FA from Texas Instruments is a military-grade power supply supervisory IC featuring over-voltage (O.V.), under-voltage (U.V.), and current-limit (C.L.) sensing circuits, 1% accurate internal 2.5 V reference, programmable time delays, and 300 mA SCR crowbar drive capability - used in high-reliability DC/DC converter monitoring and fault shutdown in aerospace power systems.

For engineers reviewing the 5962-8774001FA datasheet, 5962-8774001FA pinout, 5962-8774001FA application, or 5962-8774001FA equivalent, this device supports independent or wire-OR'd open-collector outputs, remote activation, external reset, and optional O.V. latch - critical for MIL-STD-704/1275 compliant power sequencing and fault containment.

Technical Context

The 5962-8774001FA implements three independent comparator-based sensing channels: O.V. with SCR trigger output and optional latch, U.V. with dedicated indicator and delay timing, and C.L. configured as either high-gain comparator or linear amplifier via offset/comp pin. All comparators share a trimmed 2.5 V reference with ±1% initial accuracy and 50 ppm/°C temperature stability.

It operates across –55°C to +125°C, accepts VIN from 4.7 V to 40 V, and delivers 300 mA peak SCR drive current with <500 ns propagation delay from O.V. input. The uncommitted C.L. inputs allow flexible current-sense interface design, while the O.V./U.V. delay capacitors set minimum fault duration before triggering.

Key Specifications

Parameter	Value and Actual Design Meaning
VIN Range	4.7 V to 40 V - supports wide-input DC/DC converters and aircraft bus voltages (e.g., 28 V nominal with transients).
Reference Voltage	2.5 V ±1% at 25°C - enables precise threshold setting without external trimming; stable over full military temperature range.
SCR Drive Current	–300 mA peak - directly triggers standard SCRs (e.g., MCR106) for crowbar protection without external driver stage.
O.V./U.V. Prop Delay	500 ns / 400 ns - ensures fast response to overvoltage events while allowing controlled delay via external capacitor.
Operating Temp	–55°C to +125°C - qualified per MIL-PRF-38535 Class K, suitable for avionics, missile guidance, and space-qualified power supplies.
Supply Current	15 mA max - low quiescent draw enables use in always-on supervision circuits without significant load impact.
Input Bias Current	–1.0 µA max - permits high-impedance voltage divider networks for O.V./U.V. sensing without loading error.

Pinout & Package

5962-8774001FA is supplied in a 16-pin Ceramic Flatpack (CFP-W) package with hermetic seal and gold-plated leads, optimized for high-reliability military applications requiring thermal cycling resistance and moisture immunity.

Pin/Terminal	Circuit Role	Design Meaning
1 - VIN	Power Input	Primary supply input (4.7–40 V); powers all internal circuits and reference generator.
2 - VREF	Reference Output	Stable 2.5 V ±1% source for external resistor dividers; drives up to 10 mA.
3 - GND	Ground Reference	Analog and power ground common point; must be low-impedance connection to minimize noise coupling.
4 - C.L. OUT	Current Limit Output	Open-collector output indicating overcurrent; sinks up to 50 mA for driving LEDs or logic interfaces.
5 - Offset/Comp	Current Sense Compensation	Configures C.L. amplifier gain/bandwidth or adds fixed offset for threshold adjustment.
6 - C.L. N.I. Input	Non-Inverting Current Sense	Accepts positive-side current sense voltage; used with shunt resistor for load monitoring.
7 - C.L. INV. Input	Inverting Current Sense	Accepts negative-side (low-side) current sense voltage; enables bidirectional sensing when paired.
8 - U.V. Indicate	Under-Voltage Indicator	Open-collector output active low during undervoltage condition; wire-OR capable.
9 - SCR Trigger	Crowbar Control Output	Active-low SCR gate drive; delivers –300 mA peak to initiate immediate power shutdown.
10 - Remote Activate	External Fault Initiation	Pull-to-ground activates SCR trigger independently of internal sensing - used for system-level fault injection.
11 - Reset	Latch Reset Input	Pull-to-ground clears O.V. latch; allows manual or microcontroller-controlled recovery after fault.
12 - O.V. Indicate	Over-Voltage Indicator	Open-collector output active low during overvoltage; may be wire-OR'd with other indicators.
13 - O.V. Delay	O.V. Timing Capacitor	Connects to external capacitor to set minimum O.V. duration before SCR activation (t_D = 10,000 × C_D).
14 - O.V. N.I. Input	Non-Inverting O.V. Sense	Monitors rising voltage (e.g., output rail); threshold set by divider to VREF (2.5 V).
15 - O.V. INV. Input	Inverting O.V. Sense	Monitors falling voltage; used for differential or inverted threshold configurations.
16 - U.V. Input	Under-Voltage Sense Input	Accepts divided-down rail voltage; compares against internal 2.5 V reference for U.V. detection.

Key Features

Feature	Design Value
Triple Independent Supervision	O.V., U.V., and C.L. circuits operate concurrently with separate outputs - enables layered fault detection without shared failure modes.
Programmable Time-Delayed Trigger	O.V. and U.V. delays set via external capacitor (e.g., 100 nF → 1 ms delay), preventing nuisance tripping on transient spikes.
SCR Crowbar Drive	Integrated –300 mA sink eliminates need for discrete transistor driver - reduces BOM count and PCB area in safety-critical shutdown paths.
Remote Activation & Reset	Dedicated R/A and Reset pins allow external controllers (e.g., FPGA, MCU) to force or clear faults - essential for coordinated system-level power management.
MIL-STD-883 Qualified	Class K screening per MIL-PRF-38535 ensures reliability in extended temperature, shock, vibration, and radiation environments typical of defense platforms.

Applications

Aerospace Power Converters	Avionics DC Bus Monitoring
Use Scenario: Supervising 270 VDC primary bus and 28 VDC secondary rails in fly-by-wire flight control power supplies. IC Role / Device Role / Timing Role: Monitors O.V. (±5% tolerance), U.V. (–10% drop), and C.L. (120% overload) with independent 100 µs response and 2 ms programmable hold-off. Use Value: Prevents cascading failures by initiating SCR crowbar within 500 ns of confirmed overvoltage - meeting DO-160 Section 22 surge immunity requirements.	Use Scenario: Real-time health monitoring of dual-redundant 28 VDC distribution panels in mission computers. IC Role / Device Role / Timing Role: Provides simultaneous U.V. latch indication and remote-activated SCR trip for cross-channel fault isolation. Use Value: Enables automatic bus reconfiguration upon fault detection, reducing single-point failure risk in triple-modular-redundant (TMR) architectures.
Tactical Vehicle Power Systems	Military Radar Transmitter Supplies
Use Scenario: Protecting 24 VDC–28 VDC DC/DC modules powering vehicle-mounted comms and navigation systems per MIL-STD-1275B. IC Role / Device Role / Timing Role: Detects line-induced surges (>36 V) and brownouts (<18 V), with latch-and-reset behavior for operator-confirmed recovery. Use Value: Maintains compliance with MIL-STD-1275B Clause 4.5.2 (overvoltage protection) using only one IC per rail - no external comparators or timers required.	Use Scenario: Safeguarding high-voltage modulator supplies (up to 4 kV) feeding magnetron or TWT amplifiers in ground-based radar. IC Role / Device Role / Timing Role: Senses auxiliary low-voltage rails (±15 V, +5 V) that enable HV gate drivers; triggers crowbar if any rail fails. Use Value: Prevents catastrophic tube damage by cutting HV within 1 ms of auxiliary rail fault - verified in AN-1122 test reports.

Aerospace Power Converters

Avionics DC Bus Monitoring

Use Scenario: Supervising 270 VDC primary bus and 28 VDC secondary rails in fly-by-wire flight control power supplies.

IC Role / Device Role / Timing Role: Monitors O.V. (±5% tolerance), U.V. (–10% drop), and C.L. (120% overload) with independent 100 µs response and 2 ms programmable hold-off.

Use Value: Prevents cascading failures by initiating SCR crowbar within 500 ns of confirmed overvoltage - meeting DO-160 Section 22 surge immunity requirements.

Use Scenario: Real-time health monitoring of dual-redundant 28 VDC distribution panels in mission computers.

IC Role / Device Role / Timing Role: Provides simultaneous U.V. latch indication and remote-activated SCR trip for cross-channel fault isolation.

Use Value: Enables automatic bus reconfiguration upon fault detection, reducing single-point failure risk in triple-modular-redundant (TMR) architectures.

Tactical Vehicle Power Systems

Military Radar Transmitter Supplies

Use Scenario: Protecting 24 VDC–28 VDC DC/DC modules powering vehicle-mounted comms and navigation systems per MIL-STD-1275B.

IC Role / Device Role / Timing Role: Detects line-induced surges (>36 V) and brownouts (<18 V), with latch-and-reset behavior for operator-confirmed recovery.

Use Value: Maintains compliance with MIL-STD-1275B Clause 4.5.2 (overvoltage protection) using only one IC per rail - no external comparators or timers required.

Use Scenario: Safeguarding high-voltage modulator supplies (up to 4 kV) feeding magnetron or TWT amplifiers in ground-based radar.

IC Role / Device Role / Timing Role: Senses auxiliary low-voltage rails (±15 V, +5 V) that enable HV gate drivers; triggers crowbar if any rail fails.

Use Value: Prevents catastrophic tube damage by cutting HV within 1 ms of auxiliary rail fault - verified in AN-1122 test reports.

Equivalent & Alternatives

The following parts are listed as comparable options for similar power supply supervisory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
UC1543J/883B	Same die, CDIP-16 package with through-hole mounting; identical electrical specs and MIL-PRF-38535 Class K qualification.	Preferred for legacy board designs requiring socketed DIP layout or manual assembly; lacks CFP's hermetic seal and thermal performance.	Select UC1543J/883B only when board layout or repair logistics mandate DIP footprint compatibility.
MAX692ACPP+	Single-supply 5 V operation only; no SCR drive; uses push-pull outputs instead of open-collector; no current-sense channel.	Suitable for commercial embedded systems with simple reset generation, but cannot replace 5962-8774001FA in crowbar or multi-rail monitoring roles.	Choose MAX692ACPP+ only for cost-sensitive non-military applications where O.V./U.V. reset suffices and SCR crowbar is unnecessary.

Compared with UC1543J/883B, 5962-8774001FA offers superior thermal cycling endurance and hermetic reliability in sealed enclosures; compared with MAX692ACPP+, it provides full triple-fault coverage, high-current SCR drive, and military temperature range - making it irreplaceable in safety-critical power supervision.

Availability

5962-8774001FA is available at Aetrix Electronics and suitable for aerospace power converters, avionics DC bus monitoring, and tactical vehicle power systems requiring stable component supply under extended temperature and long-lifecycle procurement conditions.

Supply support for 5962-8774001FA 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 leader specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and defense markets.

The UC1543 family was designed specifically for military-grade power supervision - integrating O.V., U.V., and C.L. functions into a single monolithic IC to reduce system complexity and improve fault coverage in mission-critical power systems.

FAQ

What is the operating temperature range of the 5962-8774001FA?

The 5962-8774001FA is rated for continuous operation from –55°C to +125°C and is screened to MIL-PRF-38535 Class K standards. This range ensures reliable performance in extreme environments such as aircraft bays, missile canisters, and armored vehicle engine compartments - where thermal stress and rapid cycling demand proven hermetic packaging and process controls. The 5962-8774001FA maintains full electrical specification compliance across this entire span without derating.

Does the 5962-8774001FA include an internal voltage reference?

Yes, the 5962-8774001FA integrates a precision 2.5 V bandgap reference trimmed to ±1% accuracy at 25°C, with temperature stability of ≤50 ppm/°C over –55°C to +125°C. This reference powers all internal comparators and is available at Pin 2 (VREF) to drive external resistor dividers for O.V./U.V. threshold setting - eliminating the need for external references or trimming potentiometers in compliant designs.

Can the 5962-8774001FA drive an SCR directly without external components?

Yes, the 5962-8774001FA provides a dedicated SCR Trigger output (Pin 9) capable of sinking –300 mA peak current, sufficient to directly gate common SCRs like the MCR106-6 or S4006L. No external transistor driver or current-boosting circuitry is required - simplifying crowbar implementation and improving fault-response timing. The 5962-8774001FA also includes built-in protection against excessive dissipation at high VIN via internal current limiting.

How is overvoltage delay programmed on the 5962-8774001FA?

Overvoltage delay is set by connecting an external capacitor between Pin 13 (O.V. Delay) and ground. The delay time follows t_D = 10,000 × C_D, where C_D is in farads - e.g., a 100 nF capacitor yields a 1 ms minimum O.V. duration before SCR activation. This programmable hold-off prevents false triggering on brief transients while preserving sub-microsecond response to sustained overvoltage events detected by the 5962-8774001FA's comparators.

Is the 5962-8774001FA pin-compatible with other UC1543 variants?

The 5962-8774001FA shares identical pinout and electrical functionality with the UC1543J/883B (CDIP-16) and UC1543L/883B (LCCC-20), as confirmed by TI's SLUS188A datasheet and PACKAGE PIN FUNCTION diagrams. However, the CFP-W package (16-pin) has different mechanical dimensions and soldering requirements - PCB layout and thermal design must be adapted accordingly, though signal routing remains identical across all UC1543 variants including the 5962-8774001FA.

5962-8774001FA Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 16-CFlatPack

Packaging:: Bulk

Product Status:: Active

Programmable:: -

Type:: Power Supply Monitor

Number of Voltages Monitored:: 1

Voltage - Threshold:: 2.5V

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: Adjustable/Selectable

Operating Temperature:: -55°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-CFP

5962-8774001FA FAQ

1.How can I place an order for 5962-8774001FA through Aetrix?

Please submit a Request for Quotation (RFQ) for 5962-8774001FA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 5962-8774001FA reliable?

The price and inventory of 5962-8774001FA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8774001FA is usually 5 days.

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5962-8774001FA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 5962-8774001FA order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 5962-8774001FA?

For technical support, including 5962-8774001FA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8774001FA requirements.

6.How does Aetrix verify that 5962-8774001FA is sourced from the original manufacturer or authorized distributors?

All 5962-8774001FA 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 5962-8774001FA meets industry standards.

7.What is the process for return or replacement of 5962-8774001FA?

All 5962-8774001FA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8774001FA, 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 5962-8774001FA part is unused and in its original packaging.

Return procedure for 5962-8774001FA:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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