Datasheet Linear Technology LTC6803HG-4#TRPBF

Datasheets

Packaging

Parametrics

Eco Plan

Articles

• Download
  Simple Circuit Monitors Health of -48V Telecom Lead-Acid Battery Backup Systems &mdash LT Journal
  PDF, 666 Kb, File published: Jul 15, 2011
  Extract from the document

  Simple Circuit Monitors Health of –48V Telecom Lead-Acid
  Battery Backup Systems
  Jon Munson Telecommunications infrastructure has always been powered by voltages that
  are negative with respect to ground to minimize corrosion in buried cable.
  Telcos typically use –48V power, with backup power supplied by large battery
  arrays to carry the system through utility outages. These power backup systems
  traditionally comprise four 12V lead-acid batteries in series, though newer
  lithium cell technology promises to make inroads as systems are updated.
  Every battery backup system must be
  continually monitored for the charge
  state and health of the batteries. In fact,
  although stacking batteries is easy, it
  can be difficult to build a monitoring
  system that can measure and digitize
  both the condition of individual cells, and monitor the high voltage potential
  of the combined cells. Enter the LTC6803
  multicell battery stack monitor.
  The LTC6803 is designed to measure and
  digitize individual cell potentials in large
  lithium cell stacks with total potentials 100О© Figure 1. Isolated lead-acid
  telecom battery-stack monitor 100nF 10ВµH 12V
  SLA 10ВµH 12V
  SLA 10ВµH 12V …

Model Line

Manufacturer's Classification

• Power Management > Battery Management > Multicell Battery Stack Monitor
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Power Management

Other Names:

LTC6803HG-4TRPBF, LTC6803HG-4 TRPBF, LTC6803HG4#TRPBF, LTC6803HG 4#TRPBF