Texas Instruments V62/04756-01XE

Overview

V62/04756-01XE from Texas Instruments is a precision-programmable shunt voltage reference IC with 0.4% initial voltage tolerance, 0.2 Ω typical output impedance, and military-grade thermal stability over –40°C to 125°C. It functions as a programmable 2.47–36 V reference using two external resistors, supports 1–100 mA sink current, and replaces Zener diodes in onboard regulation and switching power supply feedback loops.

For engineers reviewing the V62/04756-01XE datasheet, V62/04756-01XE pinout, V62/04756-01XE application, or V62/04756-01XE equivalent, this device requires attention to cathode-anode voltage headroom, reference input current (≤4 µA), temperature coefficient (≤17 mV deviation over full range), and SOIC-8 layout practices for anode pin paralleling (Pins 2,3,6,7).

Technical Context

The V62/04756-01XE implements a precision bandgap-based reference core with internal error amplifier and NPN output stage, enabling sharp turn-on (500 ns) and low dynamic impedance. Its reference voltage (VI(ref)) is trimmed to 2.500 V ±10 mV at 25°C and exhibits ≤±1.1 mV/V cathode voltage modulation up to 10 V.

Operation relies on external resistor divider feedback between cathode and reference pins, with anode serving as common return. Pins 2, 3, 6, and 7 are internally tied to anode and must be externally shorted for optimal precision; the device draws only 1.5 µA reference current at 25°C and operates down to 0.45 mA cathode current for regulation.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), body size 3.91 mm × 4.90 mm, 1.75 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt reference applications.

Compared with TL1431QDREP, V62/04756-01XE adds AQEC certification and production traceability for aerospace use; compared with TL1431MDREP, it trades –55°C capability for optimized cost and availability in the –40°C to 125°C range.

Availability

V62/04756-01XE is available at Aetrix Electronics and suitable for aerospace power management, defense-grade instrumentation, and medical imaging subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for V62/04756-01XE 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 and embedded processing technologies, with decades of heritage in precision analog ICs and high-reliability components.

The TL1431-EP product line delivers enhanced-plastic, aerospace-qualified voltage references designed for mission-critical systems where thermal stability, long-term reliability, and supply chain traceability are mandatory.

FAQ

What is the maximum cathode voltage rating for V62/04756-01XE?

The absolute maximum cathode-to-anode voltage (VKA) for V62/04756-01XE is 37 V. Operation above 36 V violates recommended conditions and risks permanent damage. The device is specified for reliable regulation up to 36 V with external resistor programming, and its 37 V absolute maximum rating provides a 1 V safety margin against transients.

Can V62/04756-01XE replace a standard TL431 in existing designs?

V62/04756-01XE is pin-compatible with TL431 in SOIC-8 packages and shares identical electrical behavior, but it adds AQEC qualification, extended temperature range (–40°C to 125°C), and enhanced plastic reliability. For legacy TL431 designs operating within this range, V62/04756-01XE can be a drop-in replacement-provided layout accommodates anode pin paralleling (Pins 2,3,6,7) per TI's precision guidelines.

How does the reference input current affect V62/04756-01XE accuracy?

V62/04756-01XE draws only 1.5 µA (typ) reference input current at 25°C, but this current flows through the lower feedback resistor (R2), causing a voltage drop that shifts the effective divider ratio. To maintain ±0.4% accuracy, R2 must be sized so that I_REF×R2 contributes <10 µV error-typically requiring R2 ≤10 kΩ for most applications. Higher values demand correction in the output voltage equation.

What is the purpose of tying Pins 2, 3, 6, and 7 together externally?

Pins 2, 3, 6, and 7 are internally connected to the anode in V62/04756-01XE. Externally shorting them reduces parasitic inductance and thermal gradients across the anode path, minimizing voltage offset and improving long-term stability. TI specifies this practice in the layout guidelines to achieve the full 0.4% initial tolerance and low temperature coefficient performance.

Is V62/04756-01XE suitable for use in safety-critical medical devices?

V62/04756-01XE is qualified to the AQEC Standard (ANSI/GEIA STD-0002-1) for defense and aerospace use, and its controlled baseline, traceable lot history, and extended product lifecycle make it appropriate for Class II/III medical devices requiring high reliability. However, final system-level safety certification (e.g., IEC 62304) remains the responsibility of the medical OEM-not guaranteed by the component alone.