Texas Instruments
Billedet kan være en repræsentation.
Se specifikationer for produktdetaljer.
UC3906N
Se detaljer DataSheets

UC3906N

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Battery Charger Controller
  • Characteristics:
    • High efficiency charging
    • Fast charge termination
    • Wide input voltage range
    • Adjustable charge current
  • Package: DIP-16 (Dual In-line Package)
  • Essence: Battery charging control and management
  • Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

  • Input Voltage Range: 4V to 40V
  • Charge Current Range: 10mA to 1.5A
  • Charge Termination Threshold: Programmable
  • Temperature Range: -40°C to +85°C
  • Supply Voltage Range: 4V to 40V
  • Standby Current: 100µA (typical)

Detailed Pin Configuration

The UC3906N IC has a total of 16 pins, which are assigned specific functions:

  1. VCC: Supply voltage input
  2. GND: Ground reference
  3. VREF: Reference voltage output
  4. CT: Charge termination control
  5. RT: Charge termination resistor
  6. ISET: Charge current set
  7. VSENSE: Voltage sense input
  8. CS: Current sense input
  9. BAT: Battery voltage input
  10. AC: AC adapter voltage input
  11. STAT: Status output
  12. THERM: Thermal shutdown input
  13. COMP: Error amplifier output
  14. OSC: Oscillator timing capacitor
  15. OSC/RT: Oscillator timing resistor
  16. OSC/CT: Oscillator timing capacitor

Functional Features

  • High-efficiency charging: The UC3906N ensures efficient battery charging by regulating the charge current and adjusting it based on the battery's needs.
  • Fast charge termination: The charge termination control feature allows for quick and accurate detection of the battery's fully charged state, preventing overcharging.
  • Wide input voltage range: The IC can operate with input voltages ranging from 4V to 40V, making it suitable for various charging applications.
  • Adjustable charge current: The charge current can be easily adjusted using an external resistor, providing flexibility in charging different battery types and capacities.

Advantages and Disadvantages

Advantages: - Efficient and accurate battery charging - Fast charge termination prevents overcharging - Wide input voltage range allows for versatile use - Adjustable charge current suits different battery types

Disadvantages: - Limited to DIP-16 package, not suitable for surface mount applications - Requires additional external components for complete battery charging circuit implementation

Working Principles

The UC3906N operates based on a constant current/constant voltage (CC/CV) charging algorithm. It regulates the charge current during the initial charging phase until the battery voltage reaches a predetermined threshold. Once this threshold is reached, the IC switches to constant voltage mode, maintaining a steady voltage across the battery terminals while reducing the charge current gradually.

Detailed Application Field Plans

The UC3906N is commonly used in various battery charging applications, including: - Lead-acid battery chargers for automotive and industrial applications - Portable electronic devices such as smartphones, tablets, and laptops - Solar-powered battery charging systems - Electric vehicle charging stations

Detailed and Complete Alternative Models

  1. UC3906DW: Similar to UC3906N but available in SOIC-16 (Small Outline Integrated Circuit) package.
  2. UC3906N-EP: Enhanced performance version of UC3906N, designed for extended temperature range and harsh environments.
  3. UC3906Q: Qualified for automotive applications, meeting specific industry standards and requirements.

These alternative models offer similar functionality and features as the UC3906N, providing options for different packaging preferences and specific application needs.

Word count: 345 words

Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af UC3906N i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of UC3906N in technical solutions:

  1. Q: What is UC3906N? A: UC3906N is a specialized integrated circuit (IC) designed for battery charger applications.

  2. Q: What are the main features of UC3906N? A: UC3906N offers features like constant current/constant voltage charging, thermal regulation, charge termination, and automatic recharge.

  3. Q: Can UC3906N be used for both lead-acid and lithium-ion batteries? A: No, UC3906N is specifically designed for lead-acid batteries and may not be suitable for lithium-ion batteries.

  4. Q: How does UC3906N achieve constant current/constant voltage charging? A: UC3906N uses a feedback control loop to regulate the charging current and voltage based on the battery's state of charge.

  5. Q: Is UC3906N capable of handling multiple battery cells in series? A: Yes, UC3906N can handle multiple battery cells in series by adjusting the charging voltage accordingly.

  6. Q: Does UC3906N have built-in protection features? A: Yes, UC3906N includes protection features like overvoltage protection, short-circuit protection, and thermal shutdown.

  7. Q: Can UC3906N be used in fast-charging applications? A: Yes, UC3906N supports fast-charging applications by providing a high charging current capability.

  8. Q: What is the maximum charging current that UC3906N can provide? A: The maximum charging current of UC3906N depends on the external components used but typically ranges from 1A to 10A.

  9. Q: Are there any specific design considerations when using UC3906N? A: Yes, it is important to consider factors like heat dissipation, component selection, and proper PCB layout for optimal performance.

  10. Q: Where can I find more information about the application of UC3906N? A: You can refer to the UC3906N datasheet provided by the manufacturer or consult application notes and technical resources available online.