LTC4071
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4071

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

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $2.65
Features
  • 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
Additional Details
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The LTC4071 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. 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. The unique architecture of the LTC4071 allows for an extremely simple battery charger solution, requiring just one external resistor.

The LTC4071 offers a pin selectable float voltage with ±1% accuracy. The integrated thermal battery qualifier extends battery lifetime and improves reliability by automatically reducing the battery float voltage at NTC thermistor temperatures above 40°C. The LTC4071 also provides two pin selectable low battery disconnect levels and a high battery status output.

The device is offered in two thermally enhanced packages, a compact low profile (0.75mm) 8-lead (2mm × 3mm) DFN and an 8-lead MSOP package.

Applications

  • Low Capacity, Li-Ion/Polymer Battery Back-Up
  • Thin Film Batteries
  • Energy Scavenging/Harvesting
  • Solar Power Systems with Back-Up
  • Memory Back-Up
  • Embedded Automotive
Part Models 8
1ku List Price Starting From $2.65

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4071EDDB#TRMPBF
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LTC4071IDDB#TRMPBF
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LTC4071IMS8E#PBF
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Product Lifecycle

PCN

Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC4071EMS8E#PBF

PRODUCTION

LTC4071EMS8E#TRPBF

PRODUCTION

LTC4071IMS8E#PBF

PRODUCTION

LTC4071IMS8E#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 3, 2020

- 20_0128

arrow down

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC4071EMS8E#PBF

PRODUCTION

LTC4071EMS8E#TRPBF

PRODUCTION

LTC4071IMS8E#PBF

PRODUCTION

LTC4071IMS8E#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1702A

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

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DC1702A

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

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

Product Detail

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.

Tools & Simulations

Tools & Simulations 1

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.

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