Features and Benefits
- Preset 4V Charge Voltage with 1% Accuracy Prolongs 4.2V Li-Ion Battery Lifetime
- Automatic Recharge
- Thermal Regulation Maximizes Charging Rate without Risk of Overheating*
- No MOSFET, Sense Resistor or Blocking Diode Required
- Programmable Charge Termination Timer
- Thermistor Input for Temperature Qualified Charging
- Programmable Charge Current with 7% Accuracy
- C/10 Charge Current Detection Output
- 25µA Supply Current in Shutdown Mode
- Charge Current Monitor Useful for Gas Gauging*
- Charges Directly from USB Port
- Tiny Thermally Enhanced 10-pin MSOP Package
The LTC4064 is a standalone linear charger optimized for prolonging the life of 1-cell Li-ion batteries in battery backup applications. By charging to a float voltage of 4V instead of 4.2V or 4.1V, the LTC4064 decelerates the aging process and capacity degradation when the battery is unused for long periods of time but must be in a ready state.
An external capacitor programs a safety timer to terminate the charge cycle while the charge current is set externally with a single resistor. When the input supply is removed, the LTC4064 automatically enters a low current sleep mode, dropping the battery drain current to less than 3µA.
Additional safety features designed to maximize battery lifetime and reliability include NTC temperature sensing and low battery charge conditioning (trickle charging).
The IC contains an on-chip power MOSFET and eliminates the need for an external sense resistor and blocking diode. The LTC4064 also includes C/10 detection circuitry, AC present logic, and fault detection circuitry.
- File Servers, RAID Systems
- Storage Products
- Li-Ion Battery Back-Up
Product Lifecycle 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)
LTC4064 Companion Parts
Recommended Related Parts
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.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC4064EMSE#PBF||Material Declaration||Reliability Data||10-Lead MSOP w/ EP|
|LTC4064EMSE#TRPBF||Material Declaration||Reliability Data||10-Lead MSOP w/ EP|
|Wafer Fabrication Data||R421 Reliability Data|
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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.