Features and Benefits

  • Bidirectional Switching Regulator with Bat-Track Adaptive Output Control Provides Efficient Charging and a 5V Output for USB On-The-Go
  • Bat-Track Control of External High Voltage Step-Down Switching Regulator
  • Overvoltage Protection Guards Against Damage
  • Instant-On Operation with Discharged Battery
  • Triple Step-Down Switching Regulators with I2C Adjustable Outputs (1A/400mA/400mA IOUT)
  • 180mΩ Internal Ideal Diode + External Ideal Diode Controller Powers the Load in Battery Mode
  • Li-Ion/Polymer Battery Charger (1.5A Max ICHG)
  • Battery Float Voltage: 4.2V (LTC3576), 4.1V (LTC3576-1)
  • Compact (4mm × 6mm × 0.75mm) 38-pin QFN Package

Product Details

The LTC3576/LTC3576-1 are highly integrated power management and battery charger ICs for Li-Ion/Polymer battery applications. They each include a high efficiency, bidirectional switching PowerPath manager with automatic load prioritization, a battery charger, an ideal diode, a controller for an external high voltage switching regulator and three general purpose step-down switching regulators with I2C adjustable output voltages. The internal switching regulators automatically limit input current for USB compatibility and can also generate 5V at 500mA for USB on-the-go applications when powered from the battery. Both the USB and external switching regulator power paths feature Bat-Track optimized charging to provide maximum power to the application from supplies as high as 38V. An overvoltage circuit protects the LTC3576/LTC3576-1 from damage due to high voltage on the VBUS or WALL pins with just two external components. The LTC3576/LTC3576-1 are available in a low profile 38-pin (4mm × 6mm × 0.75mm) QFN package.


  • HDD-Based Media Players
  • GPS, PDAs, Digital Cameras, Smart Phones
  • Automotive Compatible Portable Electronics

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (2)

Product Recommendations

LTC3576 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.