Texas Instruments LM393BIPWR

Overview

LM393BIPWR from Texas Instruments is a dual precision voltage comparator in an 8-pin WSON package (2.00 mm × 2.00 mm), operating from 2 V to 36 V supply, with ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, and 1 µs propagation delay. It serves as a high-reliability signal-level decision element in power supply monitoring and motor control feedback loops.

For engineers reviewing the LM393BIPWR datasheet, LM393BIPWR pinout, LM393BIPWR application, or LM393BIPWR equivalent, this page delivers verified electrical specs, thermal performance data, drop-in replacement guidance for legacy LM393/LM293 designs, and WSON package layout considerations for space-constrained industrial PCBs.

Technical Context

The LM393BIPWR implements two independent open-collector comparators with rail-to-rail input common-mode range extending to ground and up to VCC – 2 V, supporting single-supply operation without level-shifting. Its internal ESD clamps provide 2 kV HBM robustness, enabling use in noisy factory automation environments.

Each comparator features low input bias current (3.5 nA typ) and low output saturation voltage (110 mV at 4 mA sink), allowing direct interfacing with TTL, CMOS, and MOS logic families while minimizing power loss in high-side sensing configurations.

Key Specifications

Pinout & Package

LM393BIPWR uses an 8-pin WSON package (DSG) with 2.00 mm × 2.00 mm body size and exposed thermal pad on underside, requiring direct connection to GND for optimal thermal performance and EMI suppression.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2903BIPWR and LM393DR, the LM393BIPWR delivers the best balance of low offset, low quiescent current, and compact WSON packaging for new industrial designs operating up to +85°C - offering 3× lower supply current than LM393DR and 30% smaller footprint than LM2903BIPWR's thermal performance advantage is unnecessary in controlled environments.

Availability

LM393BIPWR is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor drive feedback, and cordless power tool battery management requiring stable component supply across multi-year production cycles.

Supply support for LM393BIPWR 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 personal electronics markets.

The LM393B series belongs to TI's precision comparator product line, engineered specifically for high-accuracy, low-power, single-supply applications in industrial automation and power management systems.

FAQ

What is the maximum supply voltage rating for LM393BIPWR?

The LM393BIPWR has an absolute maximum supply voltage rating of 38 V, with recommended operating range from 2 V to 36 V. This extended rating enables reliable operation in 24 V industrial systems with transient spikes, unlike legacy LM393 variants limited to 30–32 V. Always observe derating guidelines above 30 V for long-term reliability.

Does LM393BIPWR require a negative supply rail?

No, LM393BIPWR operates from a single positive supply (2–36 V) with inputs referenced to GND. Its common-mode input range includes ground and extends to VCC − 2 V, eliminating need for dual supplies or level-shifting circuits in most industrial sensing applications.

How is the exposed thermal pad on LM393BIPWR connected?

The exposed thermal pad on the underside of the LM393BIPWR WSON package must be soldered directly to the PCB's GND plane. This connection provides critical thermal conduction (RθJB = 63.1°C/W) and reduces EMI susceptibility - floating or unconnected pads degrade thermal performance and may cause instability.

Can LM393BIPWR replace LM393DR in an existing SOIC-8 design?

No - LM393BIPWR uses an 8-pin WSON package (2.00 mm × 2.00 mm) incompatible with SOIC-8 footprints (4.90 mm × 3.91 mm). For drop-in replacement, use LM393BDR (SOIC-8) or LM393BIDR (VSSOP-8). The "IPWR" suffix specifically denotes the WSON variant and is not pin-compatible with DR.

What is the output configuration of LM393BIPWR?

LM393BIPWR features two independent open-collector outputs (1OUT and 2OUT), each capable of sinking up to 21 mA. External pull-up resistors are required to define HIGH logic levels; outputs can interface directly with TTL, CMOS, or MOS logic families without level-shifting circuitry.