Analog Devices Inc. LTC4162 Step-Down Battery Chargers
Analog Devices Inc. LTC4162 Step-Down Battery Chargers are highly-integrated high-voltage, multi-chemistry synchronous monolithic chargers with PowerPath™ manager. The LTC4162 offers onboard telemetry functions and optional maximum power point tracking (MPPT). The device provides efficient power transfers from a wide variety of input sources, including wall adapters, backplanes, and solar panels. The LTC4162 Chargers have advanced system monitoring and battery health monitoring. Most of the charging features on the LTC4162 use pin-strap configurations and programming resistors for configuration. A 16-bit analog-to-digital converter (ADC) contained within the LTC4162 continuously monitors numerous system parameters on command, including input voltage, input current, battery voltage, battery current, output voltage, battery temperature, die temperature, and battery series resistance (BSR).
Additional features on the LTC4162 include a PowerPath topology that decouples the output voltage from the battery, thereby allowing a portable product to start up instantly when a charging source is applied under very low battery voltage conditions. Onboard charging profiles are optimized for each of a variety of battery chemistries, including Li-Ion/Polymer, LiFePO4, and lead acid. Using JEITA guidelines or custom settings, the device automatically adjusts both charge voltage and charge current based on battery temperature. The Analog Devices Inc. LTC4162 Step-Down Battery Chargers provides an exposed metal pad for excellent thermal performance. E- and I-grade devices are guaranteed for operation from –40°C to +125°C.
Features
- Multi-chemistry battery charger with termination (Li-ion/polymer, LiFePO4, and lead acid)
- 4.5V to 35V charging input voltage range
- High-efficiency synchronous operation
- 16-bit digital telemetry system monitors VBAT, IBAT, RBAT, TBAT, TDIE, VIN, IIN, VOUT
- Input undervoltage charge current limit loop
- Maximum power point tracking (MPPT) for solar panel inputs
- Input current limit prioritizes system load output
- Low loss PowerPath™ Manager
- Instant-on operation with discharged or missing battery
- JEITA and lead-acid continuous temperature controlled charging
- Thermally enhanced 28-pin 4mm × 5mm QFN package
Applications
- Medical instruments
- USB-C power delivery
- Industrial handhelds
- Ruggedized notebooks
- Tablet computers
Demonstration Boards
Analog Devices Inc. LTC4162 Demo Boards DC2038A
Designed to quickly and easily demonstrate the LTC4162 Step-Down Battery Chargers.
Analog Devices Inc. DC2654A Daughter Board
Features the EZ-PD™ CCG3 USB Type-C Port Controller IC designed by Infineon Technologies.
Block Diagram
