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LTC4002EDD-4.2#PBF - 

Battery Charger for 1 Cell of Li-Ion battery, 22V input, 4.2V / 3A charge, DFN-10

LINEAR TECHNOLOGY LTC4002EDD-4.2#PBF

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Manufacturer Part No:
LTC4002EDD-4.2#PBF
Order Code:
1648025
Technical Datasheet:
(EN)
See all Technical Docs

Product Overview

The LTC4002EDD-4.2#PBF is a complete Battery Charger Controller for 4.2V cell Li-ion batteries. With a 500kHz switching frequency, the LTC4002 provides a small, simple and efficient solution to fast charge Li-ion batteries from a wide range of supply voltages. An external sense resistor sets the charge current with ±5% accuracy. An internal resistor divider and precision reference set the final float voltage to 4.2V per cell with ±1% accuracy. When the input supply is removed, the LTC4002 automatically enters a low current sleep mode, dropping the battery drain current to 10µA. An internal comparator detects the near end-of-charge condition while an internal timer sets the total charge time and terminates the charge cycle. After the charge cycle ends, if the battery voltage drops below 4.05V per cell, a new charge cycle will automatically begin.
  • High efficiency current mode PWM controller with 500kHz switching frequency
  • ±1% Charge voltage accuracy
  • End-of-charge current detection output
  • 3 hour charge termination timer
  • Constant switching frequency for minimum noise
  • ±5% Charge current accuracy
  • Low 10µA Reverse battery drain current
  • Automatic battery recharge
  • Automatic shutdown when input supply is removed
  • Automatic trickle charging of low voltage batteries
  • Battery temperature sensing and charge qualification
  • Stable with ceramic output capacitor

Applications

Power Management, Portable Devices, Computers & Computer Peripherals

Product Information

:
Li-Ion
:
22V
:
4.2V
:
3A
:
DFN
:
10Pins
:
1
:
-40°C
:
85°C
:
Each
:
-
:
MSL 1 - Unlimited
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