Features
- Complete Charger for Single-Cell Li-ion/Polymer Batteries
- Power Path Management Optimize Charge and System Currents
- Intelligent Timeout Interval Based on Actual Charge Current
- Integrated Disconnect Switch to Disconnect the Battery
- 1% Charger Output Voltage Accuracy
- Programmable Charge Current
- Programmable End-of-Charge Current
- Charge Current Thermal Foldback for Thermal Protection
- Trickle Charge for Fully Discharged Batteries
- 28V Maximum Voltage at VIN pin
- Power Presence and Charge Indications
- Ambient Temperature Range: -40°C to +85°C
- 10 Ld 3x3 DFN Package
- Pb-Free (RoHS Compliant)
Description
The ISL9301 is a fully integrated high input voltage single-cell Li-ion battery charger with power path management function. This charger performs the CC/CV charge function required by Li-ion batteries. The charger accepts an input voltage up to 28V but is disabled when the input voltage exceeds 10.5V OVP threshold. The 28V rating eliminates the overvoltage protection circuit required in a low-voltage charger. The charge current and the end-of-charge (EOC) current are programmable with external resistors. When the battery voltage is lower than 2. 8V, the charger preconditions the battery with 16% of the programmed charge current. When the charge current reduces to the programmable EOC current level during the CV charge phase, the EOC indicator (CHG) will toggle to logic HIGH to indicate the end-of-charge condition.
The charger will continue to charge until the user-programmed timeout interval has elapsed, then the charger is terminated. The ISL9301 uses separate power paths to supply the system load and charge the battery. This feature allows the system to immediately operate with a completely discharged battery. This feature also allows the charge to terminate when the battery is full while continuing to supply the system with the input source, thus minimizing unnecessary charge/discharge cycles and improving the battery life. Two indication pins (PPR and CHG) allow simple interface to a microprocessor or LEDs.
Application Block Diagrams
|
Automatic Wine Bottle Opener
This automatic wine bottle opener features a GreenPAK device that can control the gear motor without external components.
|
|
Smart Water Monitoring System
LTE-based water monitoring system with MQTT-based leak detection and automated valve control for remote use.
|
|
Smart Water Actuator
Autonomous water valve system with LTE and solar power for leak response and remote irrigation.
|
|
Smart Glasses
Low-power smart glasses design with edge AI, secure OTA, noise cancellation, and wireless charging.
|
|
Matter-Ready Sensor Module with Wi-Fi & Bluetooth
Matter-ready multi-sensor with Wi-Fi offers interoperability, battery/solar power, and supports multiple sensors.
|
|
Smart Water Shutdown Valve
Smart water shutdown system prevents water damage with auto shut-off, smart alerts, and solar-powered operation.
|
|
Smart Water Leak Sensor
Smart water leak sensor detects leaks, triggers shut-off valves, and sends alerts via Wi-Fi and Bluetooth.
|
|
Personal Safety Tracker
Safety tracker with GPS, GSM, SOS alerts, low power, wireless charging, and enhanced safety features.
|
|
Critical Power Monitoring System
Critical power monitoring system utilizes NB‑IoT or Cat‑M1, MCU, sensors, and battery backup.
|
|
Fleet Tracking
Fleet tracking system with GPS and LTE Cat-M1 for asset monitoring, telematics, transport, and logistics.
|
Additional Applications
- Mobile Phones
- Blue-Tooth Devices
- PDAs
- MP3 Players
- Stand-Alone Chargers
- Other Handheld Devices
Applied Filters: