LTC3300-2

RECOMMENDED FOR NEW DESIGNS

Addressable High Efficiency Bidirectional Multicell Battery Balancer

Data Sheet (Rev. B) Product Selection Table

Part Models: 8
1ku List Price: Starting From $7.07

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Part Details

Bidirectional Synchronous Flyback Balancing of Up to 6 Li-Ion or LiFePO₄ Cells in Series
Up to 10A Balancing Current (Set by Externals)
Integrates Seamlessly with the LTC680x Family of Multicell Battery Stack Monitors
Bidirectional Architecture Minimizes Balancing Time and Power Dissipation
Up to 92% Charge Transfer Efficiency

Stackable Architecture Enables >800V Systems
Uses Simple 2-Winding Transformers
1MHz Serial Interface with 4-Bit CRC Packet Error Checking
Individually Addressable with 5-Bit Address
Numerous Fault Protection Features
48-Lead Exposed Pad QFN and LQFP Packages
AEC-Q100 Qualified for Automotive Application

The LTC3300-2 is a fault-protected controller IC for transformer-based bidirectional active balancing of multi-cell battery stacks. All associated gate drive circuitry, precision current sensing, fault detection circuitry and a robust serial interface with built-in watchdog timer are integrated.

Each LTC3300-2 can balance up to 6 series-connected battery cells with an input common mode voltage up to 36V. Charge from any selected cell can be transferred at high efficiency to or from 12 or more adjacent cells. Each LTC3300-2 has an individually addressable serial interface, allowing up to 32 LTC3300-2 devices to interface to one control processor.

Fault protection features include readback capability, cyclic redundancy check (CRC) error detection, maximum on-time volt-second clamps, and overvoltage shutoffs.

The related LTC3300-1 offers a serial interface that allows the serial ports of multiple LTC3300-1 devices to be daisy-chained without opto-couplers or isolators.


	Features
LTC3300-1	SPI-compatible serial interface in which each chip in the stack communicates bidirectionally to the chips of the same type above and below it via currents. There is no limit to the stack height. Large common mode voltage differences are handled by each LTC3300-1. The microprocessor in the BMS system communicates ONLY with the bottom chip in the stack and subsequently all of the chips use the same fixed internal address.
LTC3300-2	SPI-compatible serial interface in which each chip has a unique 5-bit pin-strapped address. The microprocessor in the BMS system communicates directly with every chip in the stack with common mode voltage differences handled by digital isolators or optocouplers. Because of the 5-bit address, the stack height is limited to 32 LTC3300-2 ICs or 192 cells (~800V). There are 5 pins which have a different assignment, all of them serial interface related.

Applications

Electric Vehicles/Plug-in HEVs
High Power UPS/Grid Energy Storage Systems
General Purpose Multicell Battery Stacks

Part Models: 8
1ku List Price: Starting From $7.07

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3300HLXE-2#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3300HLXE-2#WPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3300HUK-2#PBF	48-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3300HUK-2#TRPBF	48-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3300ILXE-2#PBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3300ILXE-2#WPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3300IUK-2#PBF	48-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3300IUK-2#TRPBF	48-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2021 - 21_0046 Transfer of LQFP and LQFP_EP from AEM to AET
		PCN21_0046_Form Material_Report Qualification Results Summary Other
LTC3300HLXE-2#PBF	PRODUCTION
LTC3300ILXE-2#PBF	PRODUCTION
Apr 5, 2022 - 21_0046 Transfer of LQFP and LQFP_EP from AEM to AET
		PCN21_0046_Form Material_Report Qualification Results Summary Other Delta Qualification Matrix
LTC3300HLXE-2#WPBF	PRODUCTION
LTC3300ILXE-2#WPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Cell Balancers 1
LT8584	RECOMMENDED FOR NEW DESIGNS	2.5A Monolithic Active Cell Balancer with Telemetry Interface
Multicell Battery Stack Monitor 1
LTC6804-1	NOT RECOMMENDED FOR NEW DESIGNS	12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 3

Parts	Product Life Cycle	Description
LTC3300-1	RECOMMENDED FOR NEW DESIGNS	High Efficiency Bidirectional Multicell Battery Balancer

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3300-1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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LTC3300-2

Part Details

Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 2

Video 1

Analog Dialogue 1

Hardware Ecosystem

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

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