LT8584 - 2.5A Monolithic Active Cell Balancer with Telemetry Interface

Features

  • 2.5A Typical Average Cell Discharge Current
  • Integrated 6A, 50V Power Switch
  • Integrates Seamlessly with LTC680x Family: No Additional Software Required
  • Selectable Current and Temperature Monitors
  • Ultralow Quiescent Current in Shutdown
  • Engineered for ISO 26262 Compliant Systems
  • FMEA Compatible
  • Isolated Balancing:
  • Can Return Charge to Top of Stack
  • Can Return Charge to Any Combination of Cells in Stack
  • Can Return Charge to 12V Battery for Alternator Replacement
  • Can Be Paralleled for Greater Discharge Capability
  • All Quiescent Current in Operation Taken from Local Cell
  • 16-Lead TSSOP Package

Typical Application

LT8584 Typical Application

Description

The LT®8584 is a monolithic flyback DC/DC converter designed to actively balance high voltage stacks of batteries. The high efficiency of a switching regulator significantly increases the achievable balancing current while reducing heat generation. Active balancing also allows for capacity recovery in stacks of mismatched batteries, a feat unattainable with passive balance systems. In a typical system, greater than 99% of the total battery capacity can be recovered.

The LT8584 includes an integrated 6A, 50V power switch, reducing the design complexity of the application circuit. The part runs completely off of the cell which it is discharging, removing the need for complicated biasing schemes commonly required for external power switches. The enable pin (DIN) of the part is designed to work seamlessly with the LTC680x family of battery stack voltage monitoring ICs. The LT8584 also provides system telemetry including current and temperature monitoring when used with the LTC680x family of parts. When the LT8584 is disabled, less than 20nA of total quiescent current is typically consumed from the battery.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

TSSOP-16

LT8584 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT8584EFE#PBF TSSOP 16 E $4.22 $2.95 View
LT8584EFE#TRPBF TSSOP 16 E View
LT8584HFE#PBF TSSOP 16 H $5.00 $3.50 View
LT8584HFE#TRPBF TSSOP 16 H View
LT8584IFE#PBF TSSOP 16 I $4.64 $3.25 View
LT8584IFE#TRPBF TSSOP 16 I View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

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Applications

  • Active Battery Stack Balancing
  • Electric and Hybrid Electric Vehicles
  • Fail-Safe Power Supplies
  • Energy Storage Systems

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Design Tools

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