UC2903DW

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UC2903DW

+Nomenclature

IC SUPERVISOR 4 CHANNEL 18SOIC

  • FabricantTexas Instruments

  • Pièce fabricant #UC2903DW

  • Fiche technique UC2903DW DataSheet

  • En stock1

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Spécifications

Attribut Valeur
Part Status Obsolete
Base Product Number UC2903
DigiKey Programmable Not Verified
Type Multi-Voltage Supervisor
Voltage - Threshold Adjustable/Selectable
Output Open Drain or Open Collector
Reset Active Low
Reset Timeout Adjustable/Selectable
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package 18-SOIC (0.295", 7.50mm Width)
Supplier Device Package 18-SOIC
Packaging Tube
Number of Voltages Monitored 4

Présentation

Description

The UC2903DW is a specialized integrated circuit designed primarily for battery management and power supply applications. It serves as a battery charger controller, particularly for lead-acid batteries, offering features such as voltage regulation, temperature compensation, and charge termination. The chip is equipped with multiple protection mechanisms, including over-voltage, under-voltage, and thermal shutdown, ensuring safe and efficient operation.
Key features include a wide input voltage range, programmable charge current, and an external resistor for charging current adjustment. The UC2903DW is typically used in applications such as uninterruptible power supplies (UPS), electric vehicles, and renewable energy systems.
Its compact SOIC-8 package makes it suitable for space-constrained designs. The device operates in various modes, allowing for flexibility in charging profiles depending on the battery's state and requirements. Overall, the UC2903DW is an efficient and reliable solution for managing battery charging and ensuring optimal performance and longevity of the battery system.

Equivalent

The UC2903DW is a dual voltage monitor and supervisor chip. Equivalent products include:
1. LM2903 - Dual comparator with similar functionality.
2. LTC2927 - Voltage supervisor with adjustable thresholds.
3. MAX811 - Voltage monitoring and reset IC.
4. TPS3808 - Microprocessor supervisor with dual outputs.
Always verify specific application requirements and datasheets for compatibility.

Features

The UC2903DW is a dual voltage monitor and controller designed for battery management systems, particularly in applications like power supplies and battery chargers. Key features include:
1. Dual Voltage Monitoring: Monitors both the primary and secondary battery voltages for over-voltage and under-voltage conditions.
2. Adjustable Voltage Levels: Configuration of threshold voltage settings through external resistors for customized monitoring.
3. On-chip Comparators: Integrated comparators for precise voltage detection.
4. Programmable Delay: Adjustable timing for delay before response to voltage changes.
5. Open-Drain Outputs: Provides flexibility in driving external circuitry, such as LEDs or alarms.
6. Low Power Consumption: Designed for low quiescent current, enhancing battery life in portable applications.
7. Temperature Range: Operates across a wide temperature range, making it suitable for various environments.
8. Compact Package: Available in a surface-mount package, ideal for space-constrained designs.
Overall, the UC2903DW is an efficient solution for monitoring and controlling battery voltages in various electronics applications.

Pinout

The UC2903DW is a dual comparator used in various applications such as battery management and power supply systems. It has a total of 8 pins.
Here is a brief overview of the pin functions:
1. Pin 1 (IN-): Inverting input of Comparator 1.
2. Pin 2 (IN+): Non-inverting input of Comparator 1.
3. Pin 3 (OUT): Output of Comparator 1.
4. Pin 4 (GND): Ground reference.
5. Pin 5 (IN-): Inverting input of Comparator 2.
6. Pin 6 (IN+): Non-inverting input of Comparator 2.
7. Pin 7 (OUT): Output of Comparator 2.
8. Pin 8 (VCC): Positive supply voltage.
The UC2903DW operates over a wide voltage range and provides features such as hysteresis for improved stability in applications.

Manufacturer

The UC2903DW is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930, Texas Instruments specializes in designing and producing a wide range of electronic components, including analog, digital signal processing (DSP), and embedded processing products. The company is known for its innovations in the semiconductor industry and provides solutions for various sectors such as automotive, industrial, communications, and personal electronics.
Texas Instruments is particularly recognized for its integrated circuits (ICs), microcontrollers, and analog devices that enable efficient power management, signal processing, and connectivity in electronic systems. The UC2903DW is a voltage regulator IC designed for power management applications, specifically for controlling battery chargers and power supplies.
Overall, Texas Instruments is a prominent player in the electronics industry, focusing on research and development to drive technological advancements and support a wide array of applications across multiple industries.

Application

The UC2903DW is a voltage regulator and monitor primarily used in power management applications. Its key areas include:
1. Battery Chargers: It manages charging processes for lead-acid and lithium-ion batteries.
2. Power Supply Circuits: It regulates voltage levels for various electronic devices.
3. Automotive Applications: Used in automotive power management systems to ensure stable voltage levels.
4. Uninterruptible Power Supplies (UPS): It helps maintain power stability during outages.
5. Industrial Equipment: Employed in machinery and automation systems for efficient power management.
Overall, the UC2903DW is essential for systems requiring reliable voltage regulation and monitoring.

Package

The UC2903DW is packaged in a dual in-line package (DIP) configuration. Specifically, it is an 8-pin surface mount package (SOIC) known for its compact design and ease of integration into circuit boards.