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LTC4002ES8-4.2#PBF

Battery Charger for 1 Cell of Li-Ion, Li-Pol battery, 22V input, 4.2V / 1.5A charge, SOIC-8

LINEAR TECHNOLOGY LTC4002ES8-4.2#PBF

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

Manufacturer Part No:
LTC4002ES8-4.2#PBF
Order Code:
2102628
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Product Overview

The LTC4002ES8-4.2#PBF is a standalone Li-ion Switch Mode Battery Charger for one (4.2V) or two (8.4V) cell lithium-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.
  • Wide input supply range (4.7 to 22V)
  • 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

Portable Devices, Computers & Computer Peripherals, Consumer Electronics

Product Information

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:
Li-Ion, Li-Pol

:
22V

:
4.2V

:
1.5A

:
SOIC

:
8Pins

:
1

:
-40°C

:
85°C

:
-

:
MSL 1 - Unlimited
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Technical Docs (2)

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Rs.336.39

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