LTC4061
PRODUCTIONStandalone Linear Li-Ion Battery Charger with Thermistor Input
- Part Models
- 2
- 1ku List Price
- Starting From $3.37
Overview
- Charge Current Programmable Up to 1A
- Charges Single-Cell Li-Ion Batteries Directly from USB Port
- Preset Charge Voltage with ±0.35% Accuracy
- Thermistor Input for Temperature Qualified Charging
- Input Supply Present Logic Output
- Thermal Regulation Maximizes Charge Rate Without Risk of Overheating
- Programmable Charge Current Detection/ Termination
- Programmable Charge Termination Timer
- Smart Pulsing Error Feature
- SmartStart™ Prolongs Battery Life
- 20μA Charger Quiescent Current in Shutdown
- Available in a Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package
The LTC4061 is a full-featured, flexible, standalone linear charger for single-cell Lithium-Ion batteries. It is capable of operating within USB power specifications.
Both programmable time and programmable current based termination schemes are available. Furthermore, the CHRG open-drain status pin can be programmed to indicate the battery charge state according to the needs of the application. Additional safety features designed to maximize battery lifetime and reliability include NTC battery temperature sensing and the SmartStart charging algorithm.
No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The charge current is programmed with an external resistor. With power applied, the LTC4061 can be put into shutdown mode to reduce the supply current to 20μA and the battery drain current to less than 5μA.
Other features include smart recharge, USB C/5 current programming input, undervoltage lockout and AC Present logic output.
| Float Voltage (V) | |
| LTC4061 | 4.2V |
| LTC4061-4.4 | 4.4V |
Applications
- Handheld Computers
- Portable MP3 Players
- Digital Cameras
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 2
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 |
|---|---|---|---|
| LTC4061EDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC4061EDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Hot Swap Controllers 1 | ||
|
LTC4361-1 LTC4361-2 |
Overvoltage/Overcurrent Protection Controller | |
| Ideal Diodes and PowerPath Controllers 2 | ||
| LTC4412 | RECOMMENDED FOR NEW DESIGNS | Low Loss PowerPath™ Controller in ThinSOT |
| LTC2955 | RECOMMENDED FOR NEW DESIGNS | Pushbutton On/Off Controller with Automatic Turn-On |
Evaluation Kits
LTC4061EDD | Single Cell Li-Ion Battery Charger, VIN = 4.3V to 8V, Batt = 4.2V @ 50mA to 1A
Resources
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