LTC4066
PRODUCTIONUSB Power Manager with Low-Loss Ideal Diode and Li-Ion Battery Charger
- Part Models
- 6
- 1ku List Price
- Starting From $3.57
Overview
- Seamless Transition Between Input Power Sources:
Li-Ion Battery, USB and 5V Wall Adapter - Low Loss (50mΩ) Ideal Diode Path from BAT to OUT
- Programmable Charge Current Detection (CHRG)
- Load Dependent Charging Guarantees USB Input Current Compliance
- Analog Gas Gauge Function
- Charges Single Cell Li-Ion Batteries Directly from USB Port
- Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate Without Risk of Overheating*
- Selectable 100% or 20% Current Limit (e.g., 500mA/100mA)
- Termination Timer Adapts to Actual Charge Current
- Preset 4.2V Charge Voltage with 0.8% Accuracy (4.1V for LTC4066-1)
- NTC Thermistor Input for Temperature Qualified Charging
- Thin Profile (0.75mm) 24-Lead 4mm x 4mm QFN Package
- Ultrathin Profile (0.55mm) 24-Lead 4mm x 4mm UTQFN Package (LTC4066 Only)
The LTC4066/LTC4066-1 are USB power managers and Li-Ion battery chargers designed to work in portable battery-powered applications. The parts control the total current used by the USB peripheral for operation and battery charging. The total input current can be limited to 100mA, 500mA or “unlimited” (i.e., above 2A). Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the programmed input current limit.
The LTC4066/LTC4066-1 include a standalone constant-current / constant-voltage linear charger for single cell Li-ion batteries. The float voltage applied to the battery is held to a tight 0.8% tolerance, and charge current is programmable using an external resistor to ground. A programmable end-of-charge status output (CHRG) indicates full charge. BAT pin charge and discharge currents can be monitored via an analog output (ISTAT). Total charge time is programmable by an external capacitor to ground. When the battery drops 100mV below the float voltage, automatic recharging of the battery occurs. Also featured is an NTC thermistor input used to monitor battery temperature while charging.
The LTC4066/LTC4066-1 are available in a 24-pin thin profile (0.75mm) 4mm x 4mm QFN package. The LTC4066 is also available in a 24-pin ultrathin profile (0.55mm) 4mm x 4mm UTQFN package.
Applications
- Portable USB Devices
- GPS, Cameras, Broadband Wireless Modems
- Mulitple Input Chargers
Documentation
Data Sheet 1
User Guide 1
Product Selector Card 1
Brochure 1
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 |
|---|---|---|---|
| LTC4066EPF#PBF | 24-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP) | ||
| LTC4066EPF#TRPBF | 24-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP) | ||
| LTC4066EUF#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC4066EUF#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC4066EUF-1#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC4066EUF-1#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) |
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 Monitors & Fuel Gauges 1 | ||
| LTC2942 | Obsolete | Battery Gas Gauge with Temperature, Voltage Measurement |
| Interface Transceivers 1 | ||
| LTM2884 | PRODUCTION | Isolated USB Transceiver with Isolated Power |
| Overvoltage & Overcurrent Protectors 1 | ||
|
LTC4360-1 LTC4360-2 |
Overvoltage Protection Controller | |
Evaluation Kits
LTC4066EUF | USB Power Manager and Li-Ion Charger