The ISL78693 is an integrated single-cell Li-ion or Li-polymer battery charger capable of operating with an input voltage as low as 2. 65V (cold crank case). This charger is designed to work with various types of AC adapters or a USB port. The ISL78693 operates as a linear charger when the AC adapter is a voltage source. The battery is charged in a Constant Current/Constant Voltage (CC/CV) profile. The charge current is programmable with an external resistor up to 1A. The ISL78693 can also work with a current-limited adapter to minimize the thermal dissipation. The ISL78693 features charge current thermal foldback to ensure safe operation when the printed circuit board’s thermal dissipation is limited due to space constraints. Additional features include preconditioning of an over-discharged battery, an NTC thermistor interface for charging the battery in a safe temperature range, and automatic recharge. The device is specified for operation in ambient temperatures from -40°C to +85°C and is offered in a 3x3mm thermally enhanced DFN package.

Features

  • Complete charger for single-cell Lithium chemistry batteries
  • Integrated power transistor and current sensor
  • Reverse battery leakage 700nA
  • 1% initial voltage accuracy
  • Programmable CC current up to 1A
  • Charge current thermal foldback
  • NTC thermistor interface for battery temperature alert
  • Accepts CV and CC types of adapters or USB bus power
  • Preconditioning trickle charge
  • Guaranteed to operate down to 2.65V after start-up
  • Ambient temperature range: -40°C to +85°C
  • AEC-Q100 qualified

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active DFN Tube 100
Availability
Active DFN Reel 6000
Availability
Active DFN Reel 250
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL78693 Datasheet Datasheet PDF 1.01 MB
User Guides & Manuals
ISL78693EVAL1Z User Guide Manual PDF 827 KB
Application Notes & White Papers
Selecting the Right Battery Chemistry for Automotive Safety Applications White Paper PDF 158 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Downloads
isl78693-spice-model Model ZIP 79 KB
ISL78693EVAL1Z Design Files Design File ZIP 833 KB

Boards & Kits

Part Number Title Type Company
ISL78693EVAL1Z Automotive Single-Cell Lithium Iron Phosphate Battery Charger Evaluation Board Evaluation Renesas