LM339PWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Comparator
• Characteristics: Low power consumption, wide supply voltage range, high input impedance, open collector output, and low propagation delay.
• Package: TSSOP-16 (Thin Shrink Small Outline Package)
• Essence: The LM339PWR is a quad voltage comparator designed for use in a wide range of applications that require analog signal comparison.
• Packaging/Quantity: The LM339PWR is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: 2mV (maximum)
• Input Bias Current: 25nA (maximum)
• Propagation Delay: 1.3μs (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM339PWR has a TSSOP-16 package with the following pin configuration:

___________ VCC |1 16| GND IN-1 |2 15| OUT-1 IN+1 |3 14| OUT-2 IN-2 |4 13| OUT-3 IN+2 |5 LM339PWR 12| OUT-4 IN-3 |6 11| IN+4 IN+3 |7 10| IN-4 REF- |8 9| REF+ ‾‾‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• Quad voltage comparator with open collector outputs.
• Wide supply voltage range allows operation from low voltage to industrial levels.
• Low input bias current minimizes the impact on the connected circuit.
• High input impedance reduces loading effects on the signal source.
• Open collector outputs provide flexibility for various applications.

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered devices. - Wide supply voltage range allows compatibility with different power sources. - High input impedance ensures minimal signal degradation. - Open collector outputs enable easy interfacing with other digital circuits.

Disadvantages: - Limited output current capability may require additional buffering for certain applications. - Propagation delay may affect real-time applications with strict timing requirements.

Working Principles

The LM339PWR operates as a voltage comparator by comparing the voltages at its input pins. It has four independent comparators, each with two inputs (inverting and non-inverting) and an open collector output. When the voltage at the non-inverting input is higher than the inverting input, the corresponding output goes low (sinks current). Conversely, when the inverting input voltage is higher, the output remains high impedance (floating).

Detailed Application Field Plans

The LM339PWR finds applications in various fields, including:

1. Battery Management: Voltage monitoring and protection in battery-powered systems.
2. Switching Circuits: Signal level detection and control in digital switching circuits.
3. Motor Control: Speed and position sensing in motor control systems.
4. Analog-to-Digital Conversion: Comparator stage in analog-to-digital converters.
5. Overvoltage/Undervoltage Protection: Monitoring and protection against overvoltage and undervoltage conditions.

Alternative Models

Here are some alternative models that can be used as substitutes for the LM339PWR:

1. LM393P: Dual voltage comparator in DIP-8 package.
2. LM311: Single voltage comparator with higher speed and wider temperature range.
3. LM324: Quad operational amplifier with similar functionality to the LM339PWR.

These alternative models offer similar features and can be chosen based on specific application requirements.

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