Texas Instruments LM2903PWRG4

Overview

LM2903PWRG4 from Texas Instruments is a dual low-power voltage comparator in an 8-pin TSSOP package, designed for single-supply operation from 2 V to 36 V. It delivers ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, 1 µs propagation delay, rail-to-rail input capability including ground, and TTL/CMOS/MOS-compatible open-collector outputs - enabling precise threshold detection in industrial power supplies and motor control feedback loops.

For engineers reviewing the LM2903PWRG4 datasheet, LM2903PWRG4 pinout, LM2903PWRG4 application, or LM2903PWRG4 equivalent, this page provides verified electrical specifications, validated pin functions, real-world use cases in server PSUs and cordless tools, and two confirmed alternative parts with documented functional and thermal differences.

Technical Context

The LM2903PWRG4 implements two independent comparators with internal ESD clamps (2 kV HBM), supporting wide common-mode input range (–0.1 V to V_CC – 2 V) and differential input voltage up to ±38 V. Its open-collector outputs sink up to 21 mA and interface directly with logic families without level-shifting.

Designed for robustness in noisy environments, it maintains stable performance across –40°C to +125°C ambient temperature, with supply current independent of V_CC, and features dedicated input ruggedness circuitry that prevents latch-up during overvoltage transients on either input.

Key Specifications

Pinout & Package

LM2903PWRG4 is housed in an 8-pin TSSOP package (3.00 mm × 4.40 mm body size) with exposed thermal pad connected to GND for improved thermal dissipation in high-duty-cycle applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2903DR and LM2903QPWRG4Q1, the LM2903PWRG4 offers optimal thermal performance in compact layouts and full industrial qualification - making it ideal for space-constrained industrial automation designs where automotive certification is unnecessary.

Availability

LM2903PWRG4 is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor drive feedback, and cordless power tool battery protection requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM2903PWRG4 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, with over 90 years of innovation in precision analog ICs and industrial-grade components.

The LM2903B family - including LM2903PWRG4 - was engineered for high-reliability industrial and automotive power management systems requiring robust input tolerance, low quiescent current, and guaranteed operation across extreme temperatures.

FAQ

What is the maximum supply voltage rating for LM2903PWRG4?

The LM2903PWRG4 supports a maximum supply voltage of 36 V, with absolute maximum ratings extending to 38 V for short-duration transients. This allows direct integration into 24 V industrial control systems and 36 V battery-powered equipment without external regulators or voltage dividers, while maintaining full functionality across its specified operating range of 2 V to 36 V.

Does LM2903PWRG4 require external pull-up resistors on its outputs?

Yes, LM2903PWRG4 features open-collector outputs that require external pull-up resistors to define the high-state voltage level. Typical values range from 2.2 kΩ to 10 kΩ depending on speed and load requirements. The device can sink up to 21 mA per output, enabling direct driving of LEDs, optocouplers, or logic inputs when paired with appropriate pull-ups.

Can LM2903PWRG4 operate with inputs below ground potential?

No - the LM2903PWRG4 allows input voltages down to –0.1 V relative to GND, but negative excursions beyond this limit risk incorrect output states and excessive input current flow. Its common-mode input range extends from –0.1 V to V_CC – 2 V, making it suitable for ground-referenced sensing but not true bipolar input applications without external level-shifting circuitry.

What is the temperature range specification for LM2903PWRG4?

The LM2903PWRG4 is rated for operation from –40°C to +125°C ambient temperature, matching the LM2903B specification. This extended range qualifies it for under-hood automotive applications, industrial motor drives, and outdoor infrastructure equipment where thermal cycling and sustained high-temperature operation are critical design constraints.

How does LM2903PWRG4 differ from the legacy LM2903 in practical design?

The LM2903PWRG4 improves upon the legacy LM2903 with ±0.37 mV typical input offset voltage (vs. ±15 mV), 200 µA per comparator quiescent current (vs. ~1 mA), 1 µs propagation delay (vs. 1.3 µs), and 2 kV HBM ESD rating (vs. 1.5 kV). These enhancements reduce system calibration needs, extend battery life, improve transient response, and simplify ESD protection - all while maintaining pin compatibility and drop-in replacement capability.