Overview

Features and Benefits

  • Full-Featured Standalone USB Li-Ion/Polymer Battery Charger
  • 100mA to 950mA Programmable Charge Current
  • C/10 Charge Current Detection Output
  • Internal Safety Timer Termination
  • NTC Thermistor Input for Temperature Qualified Charging
  • Preset 4.2V Float Voltage with 0.5% Accuracy
  • Constant-Current/Constant-Voltage Operation with Thermal Feedback
  • Charge Current Monitor Output for Gas Gauging
  • Automatic Recharge
  • Bad-Battery Detection
  • 8.5µA Input Supply Current in Suspend Mode
  • Tiny 8-Lead (2mm × 2mm) DFN Package

Product Details

The LTC4095 is a complete constant-current/constant-voltage linear charger for single-cell lithium-ion/polymer batteries. Its small 2mm × 2mm DFN package and low external component count make the LTC4095 especially well-suited for portable USB power applications.

Up to 950mA of charge current may be programmed via a single resistor from the PROG pin to ground. The HPWR pin allows the charge current to be set at 20% or 100% of its full-scale programmed value. An internal safety timer terminates charge current. The final float voltage is preset to 4.2V and held to a tight 0.5% tolerance. Also featured is an NTC thermistor input to monitor battery temperature while charging, a C/10 current detection output, automatic recharge, bad-battery detection and low-battery trickle charge. A thermal feedback loop regulates the charge current to limit the die temperature during high power operation or high ambient thermal conditions.

The LTC4095 is available in a tiny, low profile (0.75mm) 8-lead 2mm × 2mm DFN package.

Applications

  • PDAs
  • Media Players
  • Cellular Phones
  • Other 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 (1)

Product Recommendations

LTC4095 Companion Parts

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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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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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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.