LTC3300-2 Balancer Datasheet

LTC3300-2 Datasheet, PDF, Equivalent


Part Number

LTC3300-2

Description

Addressable High Efficiency Bidirectional Multicell Battery Balancer

Manufacture

Linear Technology

Total Page 30 Pages
Datasheet
Download LTC3300-2 Datasheet


LTC3300-2
FEATURES
n Bidirectional Synchronous Flyback Balancing
of Up to 6 Li-Ion or LiFePO4 Cells in Series
n Up to 10A Balancing Current (Set by Externals)
n Integrates Seamlessly with the LTC680x Family of
Multicell Battery Stack Monitors
n Bidirectional Architecture Minimizes Balancing
Time and Power Dissipation
n Up to 92% Charge Transfer Efficiency
n Stackable Architecture Enables >800V Systems
n Uses Simple 2-Winding Transformers
n 1MHz Serial Interface with 4-Bit
CRC Packet Error Checking
n Individually Addressable with 5-Bit Address
n Numerous Fault Protection Features
n 48-Lead Exposed Pad QFN and LQFP Packages
APPLICATIONS
n Electric Vehicles/Plug-in HEVs
n High Power UPS/Grid Energy Storage Systems
n General Purpose Multicell Battery Stacks
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and isoSPI
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
LTC3300-2
Addressable High Efficiency
Bidirectional Multicell
Battery Balancer
DESCRIPTION
The LTC®3300-2 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, cy-
clic 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.
TYPICAL APPLICATION
High Efficiency Bidirectional Balancing
NEXT CELL ABOVE
CHARGE
SUPPLY
(ICHARGE 1-6)
CHARGE
RETURN
(IDISCHARGE 1-6)
+
CELL 12
LTC3300-2
4
ISOLATOR
+ CELL 7 ADDRESS n + 1
5
CHARGE
RETURN
+IDISCHARGE
CELL 6
CHARGE
SUPPLY
ICHARGE
+
CELL 1
NEXT CELL BELOW
LTC3300-2
4
ADDRESS n
5
33002 TA01a
ISOLATOR
4
4
SERIAL I/O
4
Balancer Efficiency
100
DC2064A DEMO BOARD
ICHARGE = IDISCHARGE = 2.5A
VCELL = 3.6V
95
CHARGE
90 DISCHARGE
85
80
6 8 10 12
NUMBER OF CELLS (SECONDARY SIDE)
33001 TA01b
For more information www.linear.com/LTC3300-2
33002f
1

LTC3300-2
LTC3300-2
ABSOLUTE MAXIMUM RATINGS (Note 1)
Total Supply Voltage (C6 to V)..................................36V
Input Voltage (Relative to V)
C1 ............................................................ –0.3V to 6V
I1P ........................................................ –0.3V to 0.3V
I1S, I2S, I3S, I4S, I5S, I6S..................... –0.3V to 0.3V
CSBI, SCKI, SDI........................................ –0.3V to 6V
VREG, SDO................................................ –0.3V to 6V
RTONP, RTONS............–0.3V to Min[VREG + 0.3V, 6V]
CTRL, BOOST, WDT..... –0.3V to Min[VREG + 0.3V, 6V]
A4, A3, A2, A1, A0........ –0.3V to Min[VREG + 0.3V, 6V]
Voltage Between Pins
Cn to Cn-1*............................................... –0.3V to 6V
InP to Cn-1*........................................... –0.3V to 0.3V
BOOST+ to C6........................................... –0.3V to 6V
SDO Current............................................................10mA
G1P, GnP, G1S, GnS, BOOSTCurrent................ ±200mA
Operating Junction Temperature Range (Notes 2, 7)
LTC3300I-2......................................... –40°C to 125°C
LTC3300H-2....................................... –40°C to 150°C
Storage Temperature Range................... –65°C to 150°C
*n = 2 to 6
PIN CONFIGURATION
TOP VIEW
TOP VIEW
G6S 1
36 C5
I6S 2
35 G5P
G5S 3
34 I5P
I5S 4
33 C4
G4S 5
32 G4P
I4S 6
G3S 7
V49
31 I4P
30 C3
I3S 8
29 G3P
G2S 9
28 I3P
I2S 10
27 C2
G1S 11
26 G2P
I1S 12
25 I2P
UK PACKAGE
48-LEAD (7mm × 7mm) PLASTIC QFN
TJMAX
EXPOSED PAD
= 150°C,
(PIN 49)
IθSJAV=,
34°C/W, θJC = 3°C/W
MUST BE SOLDERED
TO
PCB
G6S 1
36 C5
I6S 2
35 G5P
G5S 3
34 I5P
I5S 4
33 C4
G4S 5
32 G4P
I4S 6
G3S 7
4V9
31 I4P
30 C3
I3S 8
29 G3P
G2S 9
28 I3P
I2S 10
27 C2
G1S 11
26 G2P
I1S 12
25 I2P
LXE PACKAGE
48-LEAD (7mm × 7mm) PLASTIC LQFP
TJMAX = 150°C, θJA =
EXPOSED PAD (PIN 49) IS
V20,.4M6U°CS/TWB,EθJSCO=LD3.E6R8E°DC/WTO
PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3300IUK-2#PBF
LTC3300IUK-2#TRPBF LTC3300UK-2
48-Lead (7mm × 7mm) Plastic QFN
–40°C to 125°C
LTC3300HUK-2#PBF
LTC3300HUK-2#TRPBF LTC3300UK-2
48-Lead (7mm × 7mm) Plastic QFN
–40°C to 150°C
LEAD FREE FINISH
TRAY
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3300ILXE-2#PBF
LTC3300ILXE-2#PBF
LTC3300LXE-2
48-Lead (7mm × 7mm) Plastic eLQFP –40°C to 125°C
LTC3300HLXE-2#PBF
LTC3300HLXE-2#PBF LTC3300LXE-2
48-Lead (7mm × 7mm) Plastic eLQFP –40°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
33002f
2 For more information www.linear.com/LTC3300-2


Features FEATURES n Bidirectional Synchronous Fl yback Balancing of Up to 6 Li-Ion or Li FePO4 Cells in Series n Up to 10A Bala ncing Current (Set by Externals) n Int egrates Seamlessly with the LTC680x Fam ily of Multicell Battery Stack Monitors n Bidirectional Architecture Minimize s Balancing Time and Power Dissipation n Up to 92% Charge Transfer Efficiency n Stackable Architecture Enables >800 V Systems n Uses Simple 2-Winding Tran sformers n 1MHz Serial Interface with 4 -Bit CRC Packet Error Checking n Indiv idually Addressable with 5-Bit Address n Numerous Fault Protection Features n 48-Lead Exposed Pad QFN and LQFP Packa ges APPLICATIONS n Electric Vehicles/P lug-in HEVs n High Power UPS/Grid Ener gy Storage Systems n General Purpose M ulticell Battery Stacks L, LT, LTC, LTM , Linear Technology and the Linear logo are registered trademarks and isoSPI i s a trademark of Linear Technology Corp oration. All other trademarks are the p roperty of their respective owners. LTC3300-2 Addressable High.
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