LTC4071

RECOMMENDED FOR NEW DESIGNS

Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect

Data Sheet (Rev. D) Product Selection Table
Part Models
8
1ku List Price
Starting From $2.65
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Part Details

  • Charger Plus Pack Protection in One IC
  • Low Operating Current (550nA)
  • Near Zero Current (<0.1nA) Low Battery Disconnect Function to Protect Batteries from Over-Discharge
  • Pin Selectable Low Battery Disconnect Level: 2.7V or 3.2V
  • 1% Float Voltage Accuracy Over Temperature
  • 50mA Maximum Internal Shunt Current
  • Pin Selectable Float Voltage Options: 4.0V, 4.1V, 4.2V
  • Ultralow Power Pulsed NTC Float Conditioning for Li-Ion/Polymer Protection
  • Suitable for Intermittent, Continuous and Very Low Power Charging Sources
  • High Battery Status Output
  • Thermally Enhanced, Low Profile (0.75mm) 8-lead (2mm × 3mm) DFN and MSOP Packages
LTC4071
Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect
Battery Disconnect ILEAK vs Temperature Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 1

Technical Articles 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
µModule Battery Chargers 1
LTM8061
RECOMMENDED FOR NEW DESIGNS 32V, 2A μModule (Power Module) Li-Ion/Polymer Battery Charger
Digital Temperature Sensors 1
LTC2991
RECOMMENDED FOR NEW DESIGNS Octal I2C Voltage, Current, and Temperature Monitor
Energy Harvesting 1
LTC3588-1
RECOMMENDED FOR NEW DESIGNS Nanopower Energy Harvesting Power Supply
Single-Supply Monitors 1
LTC2935
PRODUCTION Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds
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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LTC4071
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1702A

LTC4071EDDB Demo Board | Shunt Li-Ion Charger, 10V ≤ VIN ≤ 16V, 4.1VOUT @ 50mA

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Product Details

Demonstration Circuit DC1702A is a Li-Ion/Polymer Shunt Battery Charger system with Low Battery Disconnect featuring the LTC4071EDDB. The LTC4071 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. The DC1702 provides up to 50mA of output current at 4.1V from a 10V to 16V input supply.


A near-zero current low battery latching disconnect function protects even the lowest capacity batteries from deep discharge and potentially irreparable damage. The 550nA to 50mA operating current makes charging possible from previously unusable sources. With its low operating current the LTC4071 is well suited to charge low capacity Li-Ion or thin film batteries in energy harvesting applications.
DC1702A
LTC4071EDDB Demo Board | Shunt Li-Ion Charger, 10V ≤ VIN ≤ 16V, 4.1VOUT @ 50mA
DC1702A Demo Board DC1702A Demo Board DC1702A Demo Board DC1702A-3 DC1702A - Schematic

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