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LTC4001

Features: Low Power Dissipation 2A Maximum Charge Current No External MOSFETs, Sense Resistor or Blocking Diode Required Remote Sensing at Battery Terminals Programmable Charge Termination Timer Preset 4.2V Float Voltage with ±0.5% Accuracy Programmable Charge Current Detection/Termination Automa...

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SeekIC No. : 004402400 Detail

LTC4001: Features: Low Power Dissipation 2A Maximum Charge Current No External MOSFETs, Sense Resistor or Blocking Diode Required Remote Sensing at Battery Terminals Programmable Charge Termination Timer Pr...

LTC4001 Data Sheet

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Part Number:
LTC4001
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Low Power Dissipation
2A Maximum Charge Current
No External MOSFETs, Sense Resistor or Blocking Diode Required
Remote Sensing at Battery Terminals
Programmable Charge Termination Timer
Preset 4.2V Float Voltage with ±0.5% Accuracy
Programmable Charge Current Detection/Termination
Automatic Recharge
Thermistor Input for Temperature Qualified Charging
Compatible with Current Limited Wall Adapters
Low Profile 16-Lead (4mm * 4mm) QFN Package


Application

Handheld Battery-Powered Devices
Handheld Computers
Charging Docks and Cradles
Digital Cameras
Smart Phones


Pinout

Connection Diagram


Specifications

PVIN, VINSENSE
t < 1ms, DC < 1% .................................... 0.3V to 7V
Steady State ............................................ 0.3V to 6V
SW, SENSE, BAT, BATSENS, SS, FAULT, CHRG, EN,
NTC, PROG, IDET, TIMER Voltage ............. 0.3V to 6V
Operating Temperature Range (Note 3)..40 to 85
Operating Junction Temperature
(Note 5) .............................................. 40 to 125
Storage Temperature Range .............. 65 to 125


Description

The LTC®4001 is a 2A Li-Ion battery charger intended for 5V wall adapters. It utilizes a 1.5MHz synchronous buck converter topology to reduce power dissipation during charging. Low power dissipation, an internal MOSFET and sense resistor allow a physically small charger that can be embedded in a wide range of handheld applications. The LTC4001 includes complete charge termination circuitry, automatic recharge and a ±1% 4.2V float voltage. Input short-circuit protection is included so no blocking diode is required.

Battery charge current, charge timeout and end-of-charge indication parameters are set with external components. Additional features include shorted cell detection, temperature qualified charging and overvoltage protection. The LTC4001 is available in a low profile (0.75mm) 16-lead (4mm × 4mm) QFN package.




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