LTC4067

PRODUCTION

USB Power Manager with OVP and Li-Ion/Polymer Charger

Data Sheet Product Selection Table
Viewing:

Overview

  • Programmable Input Current Limit:
    • Single Resistor at CLPROG Pin to Set and Monitor Input Current
  • Battery Charger/Ideal Diode/Controller:
    • 13V Overvoltage Protection
    • Full Featured Battery Charger with 4.2V Float
    • Up to 1.25A Programmable Charge Current
    • Thermal Regulation Maximizes Charge Current Without Risk of Overheating
    • Internal 2 Hour Termination Timer from Onset of Voltage Mode Charging
    • Automatic Load Switchover to Battery Power with Internal Ideal Diode and Drive Output for Optional External MOSFET
    • NTC Thermistor Input
    • Bad Battery Time-Out Detection
    • 4mm × 3mm 12-Lead DFN Package

The LTC4067 is a USB power management and Li-Ion/ Polymer battery charger designed for portable battery powered applications. The part controls total current used by the USB peripheral for operation and battery charging. The total input current may be left unregulated, or it may be limited to 20% or 100% of the programmed value up to 1.5A (typically 500mA). 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.

With the addition of an external P-channel MOSFET the LTC4067 can withstand voltages up to 13V.

The LTC4067 includes a complete constant current/constant voltage linear charger for single cell Li-Ion batteries. The float voltage applied to the battery is held to a tight 0.4% tolerance, and charge current is programmed using an external resistor to ground. An end-of-charge status output, CHRG, indicates full charge. Also featured is an NTC thermistor input used to monitor battery temperature while charging.

The LTC4067 is available in a 12-lead low profile 4mm × 3mm DFN package.

Applications

  • Automatic Battery Charging/Load Switchover
  • Backup Battery Charger
  • Uninterrupted Supplies

LTC4067
USB Power Manager with OVP and Li-Ion/Polymer Charger
OVP Response to Ramp Input at OVI Product Package 1
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Battery Monitors & Fuel Gauges 1
LTC2942
NOT RECOMMENDED FOR NEW DESIGNS Battery Gas Gauge with Temperature, Voltage Measurement
Interface Transceivers & Isolators 1
LTM2884
PRODUCTION Isolated USB Transceiver with Isolated Power
Protection Switches & Controllers 1
LTC4361-1
LTC4361-2
Overvoltage/Overcurrent Protection Controller
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

eval board
schematic 1
DC943A

LTC4067EDE Demo Board | USB Power Manager with 13V OVP and 1.25A Li-Ion Charger

Buy Now View Details

Product Details

Demonstration circuit 943 is a complete power controller for a USB power device. It features the LTC6047 and provides a full-featured 1.25A linear lithium-ion CC/CV battery charger with timer termination and 4.2V charge voltage, a USB power manager, and a PowerPath manager for the battery. The USB input voltage range is 4.35V to 5.5V and the wall adapter input is 4.35V to 6V. It also features a programmable 1.5A input current limit that can be set at 500mA or 100mA for USB applications.


The wall adapter input has overvoltage protection up to 13V. An external MOSFET disconnects the wall adapter when the voltage exceeds 6V.



DC943A
LTC4067EDE Demo Board | USB Power Manager with 13V OVP and 1.25A Li-Ion Charger
DC943A - Schematic

Latest Discussions

No discussions on LTC4067 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed