LTC4071
RECOMMENDED FOR NEW DESIGNSLi-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect
- Part Models
- 8
- 1ku List Price
- Starting From $3.36
Overview
- 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
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
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 1
Video 1
Product Selector Card 3
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4071EDDB#TRMPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC4071EDDB#TRPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC4071EMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LTC4071EMS8E#TRPBF | 8-Lead MSOP w/ EP | ||
| LTC4071IDDB#TRMPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC4071IDDB#TRPBF | 8-Lead DFN (3mm x 2mm w/ EP) | ||
| LTC4071IMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LTC4071IMS8E#TRPBF | 8-Lead MSOP w/ EP |
| Part Models | 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 | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger ICs 1 | ||
| LTM8061 | RECOMMENDED FOR NEW DESIGNS | 32V, 2A μModule (Power Module) Li-Ion/Polymer Battery Charger |
| Supervisory Circuits & Reset ICs 1 | ||
| LTC2935 | PRODUCTION | Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds |
| Switching Regulators & Controllers 1 | ||
| LTC3588-1 | RECOMMENDED FOR NEW DESIGNS | Nanopower Energy Harvesting Power Supply |
| Temperature Sensors 1 | ||
| LTC2991 | RECOMMENDED FOR NEW DESIGNS | Octal I2C Voltage, Current, and Temperature Monitor |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC4071
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
LTC4071EDDB Demo Board | Shunt Li-Ion Charger, 10V ≤ VIN ≤ 16V, 4.1VOUT @ 50mA