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LINEAR TECHNOLOGY  LTC4020EUHF#PBF  Battery Charger Universal for 12 Cells, 55V input, 20 A charge, QFN-38

LINEAR TECHNOLOGY LTC4020EUHF#PBF
LINEAR TECHNOLOGY LTC4020EUHF#PBF
Technical Data Sheet (414.93KB) EN See all Technical Docs

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LINEAR TECHNOLOGY LTC4020EUHF#PBF
LINEAR TECHNOLOGY LTC4020EUHF#PBF

Product Overview

The LTC4020EUHF#PBF is a 55V buck-boost Multi-chemistry Battery Charger providing PowerPath™ instant-on operation and high efficiency battery charging over a wide voltage range. An onboard buck-boost DC/DC controller operates with battery and/or system voltages above, below or equal to the input voltage. The LTC4020 seamlessly manages power distribution between battery and converter outputs in response to load variations, battery charge requirements and input power supply limitations. The battery charger can provide a constant-current/constant-voltage charge algorithm, constant-current charging (CC) or charging with an optimized 4-step, 3-stage lead-acid battery charge profile. Maximum converter and battery charge currents are resistor programmable. The IC's instant-on operation ensures system load power even with a fully discharged battery. Additional safety features include preconditioning for heavily discharged batteries and an integrated timer for termination and protection.
  • Wide voltage range (4.5 to 55V input, up to 55V output (60V absolute maximums))
  • Synchronous buck-boost DC/DC controller
  • Li-ion and lead-acid charge algorithms
  • ±0.5% Float voltage accuracy
  • ±5% Charge current accuracy
  • Instant-on for heavily discharged batteries
  • Ideal diode controller provides low loss PowerPath when input power is limited
  • Input voltage regulation for high impedance input supplies and solar panel peak power operation
  • Onboard timer for protection and termination
  • Bad battery detection with auto-reset
  • NTC input for temperature qualified charging
  • Binary coded open-collector status pins

 

Product Information

Battery Type:
Lead Acid, LiFePO4, Li-Ion, Li-Pol, NiCd, NiMH
Input Voltage:
55V
Battery Charge Voltage:
55V
Charge Current Max:
20A
Battery IC Case Style:
QFN
No. of Pins:
38Pins
No. of Series Cells:
12
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Packaging:
Each
Product Range:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Portable Devices;
  • Industrial;
  • Medical;
  • Alternative Energy;
  • Defence, Military & Aerospace;
  • Communications & Networking;
  • Automotive

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Product Traceability
RoHS Compliant:
Yes

Substitutes

Associated Products

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