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LINEAR TECHNOLOGY  LTC4085EDE#PBF  Battery Charger for 1 Cell of Li-Ion battery, 5.5V input, 4.2V / 1.2A charge, DFN-14

LINEAR TECHNOLOGY LTC4085EDE#PBF
LINEAR TECHNOLOGY LTC4085EDE#PBF
Manufacturer Part No:
LTC4085EDE#PBF
Order Code:
2295378
Technical Datasheet:
See all Technical Docs
LINEAR TECHNOLOGY LTC4085EDE#PBF
LINEAR TECHNOLOGY LTC4085EDE#PBF

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LTC4085EDE#PBF is an USB Power Manager with ideal diode controller and Li-ion charger designed for portable battery powered applications. The part controls total current used by the USB peripheral for operation and battery charging. Battery charge current is automatically reduced such that the sum of the load current and charge current does not exceed the programmed input current limit. It 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 0.8% tolerance and charge current is programmable using an external resistor to ground. An end-of-charge status output CHRG indicates full charge. Total charge time is programmable by an external capacitor to ground. When the battery drops 100mV below the float voltage, automatic recharging of the battery occurs. Also featured is an NTC thermistor input used to monitor battery temperature while charging.
  • Seamless transition between input power sources (Li-ion battery, USB and 5V wall adapter)
  • Load dependent charging guarantees accurate USB input current compliance
  • Constant-current/constant-voltage operation with thermal feedback
  • Maximize charging rate without risk of overheating
  • Selectable 100% or 20% input current limit (e.g. 500/100mA)
  • Battery charge current independently programmable up to 1.2A
  • Preset 4.2V charge voltage with 0.8% accuracy
  • C/10 charge current detection output
  • NTC thermistor input for temperature qualified charging

Product Information

Battery Type:
Li-Ion
Input Voltage:
5.5V
Battery Charge Voltage:
4.2V
Charge Current Max:
1.2A
Battery IC Case Style:
DFN
No. of Pins:
14Pins
No. of Series Cells:
1
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Portable Devices
  • Imaging, Video & Vision
  • Consumer Electronics
  • Multimedia
  • Communications & Networking

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000179

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