Texas Instruments LM2903VQPWRG4

Overview

LM2903VQPWRG4 from Texas Instruments is a dual voltage comparator IC designed for single-supply operation across 2 V to 36 V, featuring ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, and 1 µs propagation delay. It operates over –40°C to +125°C and supports rail-to-rail input common-mode range including ground - used in server PSU overvoltage protection circuits.

For engineers reviewing the LM2903VQPWRG4 datasheet, LM2903VQPWRG4 pinout, LM2903VQPWRG4 application, or LM2903VQPWRG4 equivalent, key selection criteria include its B-version enhanced ESD rating (2 kV HBM), extended temperature grade, low-input-bias-current design (3.5 nA typ), and compatibility with TTL/MOS/CMOS logic outputs.

Technical Context

The LM2903VQPWRG4 implements two independent open-collector comparators with internal ESD clamps enabling robust input ruggedness. Its input stage supports differential voltages up to ±38 V and common-mode inputs down to ground, allowing direct sensing of low-side current shunts or battery terminals without level-shifting.

Propagation delay is optimized for fast decision-making: 300 ns (TTL-level step) and 1 µs (small-signal 5 mV overdrive). Quiescent current remains stable across supply voltage (2–36 V) and temperature (–40°C to +125°C), supporting energy-sensitive industrial control and motor drive monitoring.

Key Specifications

Pinout & Package

Packaged in an 8-pin TSSOP (PW) with 3.00 mm × 4.40 mm body size, the LM2903VQPWRG4 uses a standard SOIC-compatible footprint with gull-wing leads for automated assembly and thermal reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator applications.

Compared with LM2903QPWRG4Q1 and LM393BDR, the LM2903VQPWRG4 offers the widest industrial temperature range (–40°C to +125°C) in a space-saving TSSOP package, making it optimal for high-reliability embedded control where automotive certification is unnecessary but extended thermal margin is critical.

Availability

LM2903VQPWRG4 is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor drive protection, and factory automation sensor interface requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM2903VQPWRG4 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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The LM2903 family is part of TI's precision analog portfolio, engineered for robust, low-cost voltage comparison in harsh environments - emphasizing reliability, wide supply range, and ease of use in safety-critical monitoring functions.

FAQ

What is the maximum supply voltage rating for LM2903VQPWRG4?

The LM2903VQPWRG4 has an absolute maximum supply voltage of 36 V, consistent with the B-version enhancements over legacy LM2903 variants. This allows direct operation from 24 V industrial buses or 32 V telecom supplies without external regulation. Exceeding 36 V risks permanent damage, and operation above 36 V is not supported under any condition.

Does LM2903VQPWRG4 support rail-to-rail input operation?

Yes, the LM2903VQPWRG4 supports rail-to-rail input common-mode voltage range, extending from ground (GND) up to VCC − 2 V. This enables direct sensing of signals referenced to ground - such as current-shunt voltages or battery terminals - without external level-shifting circuitry. Both inputs may independently reach VCC without damage.

What is the typical input offset voltage of LM2903VQPWRG4 over temperature?

The LM2903VQPWRG4 exhibits ±0.37 mV typical input offset voltage at 25°C, with a maximum of ±4 mV across the full operating range of –40°C to +125°C. This tight offset specification ensures minimal threshold error in precision monitoring applications like battery-cell balancing or regulated power supply fault detection.

Can LM2903VQPWRG4 replace older LM2903 or LM2903V devices in existing designs?

Yes, the LM2903VQPWRG4 is a drop-in replacement for LM2903 and LM2903V in TSSOP-8 footprint designs. It retains identical pinout, electrical behavior, and package dimensions while improving key parameters: lower offset (±0.37 mV vs. ±15 mV), faster response (1 µs vs. 1.3 µs), and higher supply rating (36 V vs. 32 V). No PCB or firmware changes are required.

What output logic families are compatible with LM2903VQPWRG4?

The LM2903VQPWRG4 features open-collector outputs fully compatible with TTL, MOS, and CMOS logic families. When used with appropriate pull-up resistors (e.g., 4.7 kΩ to 5 V), it drives standard 5 V or 3.3 V digital inputs directly. Its 21 mA sink capability supports driving LEDs, relays, or optocouplers without additional buffering.