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Texas Instruments UC3909Q - Professional Lead Acid Battery Charger IC

The UC3909Q from Texas Instruments is a high-performance battery charger controller IC specifically engineered for lead acid battery charging applications. This surface-mount 28-PLCC package delivers reliable, programmable constant-current charging with exceptional thermal performance across demanding industrial and commercial environments.

Key Features & Benefits

  • Programmable Constant Current: Flexible charging profiles tailored to your application requirements
  • Wide Operating Voltage: Supports up to 40V supply voltage for versatile system integration
  • Industrial Temperature Range: Operates reliably from 0°C to 70°C (TA) for harsh environments
  • Compact Surface Mount Design: 28-LCC (J-Lead) package optimizes board space and manufacturing efficiency
  • Lead Acid Chemistry Optimized: Purpose-built for lead acid battery systems

Applications

The UC3909Q is ideal for:

  • Industrial battery backup systems
  • Uninterruptible power supplies (UPS)
  • Automotive battery management
  • Renewable energy storage systems
  • Emergency lighting and power equipment
  • Telecommunications infrastructure

Why Choose the UC3909Q?

Engineered by Texas Instruments, a global leader in semiconductor innovation, the UC3909Q combines proven reliability with advanced charging control. Its programmable architecture allows designers to optimize charging algorithms for specific battery types and application requirements, ensuring maximum battery life and system performance.


Related Resources

Explore more power management solutions:

  • Battery Chargers Collection - Browse our complete range of battery charging ICs and power management solutions
  • HQICKEY Homepage - Discover premium electronic components and semiconductors for industrial applications
  • Technical Blog - Stay updated with the latest industry news, application notes, and design tips
Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Marketplace | Tube
Battery Chemistry Lead Acid
Number of Cells -
Current - Charging Constant - Programmable
Programmable Features -
Fault Protection -
Charge Current - Max -
Battery Pack Voltage -
Voltage - Supply (Max) 40V
Interface -
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 28-LCC (J-Lead)
Supplier Device Package 28-PLCC (11.51x11.51)