LTC6801IG#PBF;LTC6801HG#PBF;LTC6801IG#TRPBF;LTC6801HG#TRPBF;中文规格书,Datasheet资料

THE LTC6801
NEXT LOWER CELL PACK
VTEMP1 VTEMP2
15
16
NTC
VREF 17
REFERENCE
NTC
22 STATUS OUTPUT
6801 TA01a
CLOCK SIGNAL OUTPUT INDICATES SYSTEM “OK”
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APPLICATIONS
n Redundant Battery Monitor n Hybrid Electric Vehicles n Battery Backup Systems n Power Systems Using Multiple Battery Cells
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Independent Multicell Battery Stack Fault Monitor
DESCRIPTION
The LTC®6801 is a multicell battery monitoring IC incorporating a 12-bit ADC, a precision voltage reference, sampled comparator, and a high voltage input multiplexer. The LTC6801 can monitor as many as 12 series connected battery cells for overvoltage, undervoltage, and overtemperature conditions, indicating whether the cells are within specified parameters. The LTC6801 generates a clock output when no fault conditions exist. Differential clocking provides high noise immunity and ensures that battery stack fault conditions cannot be hidden by frozen bits or short circuit conditions.
ERROR (%)
0V Detection Level Error
1.0 V+ = 43.2V 0.8 OV = 4.116V
0.6 5 TYPICAL UNITS
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0 –40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
LTC6801IG#PBF
LTC6801IG#TRPBF LTC6801G
36-Lead Plastic SSOP
–40°C to 85°C
LTC6801HG#PBF
LTC6801HG#TRPBF LTC6801G
36-Lead Plastic SSOP
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Detection n Self Test Features Guarantee Accuracy n Robust Fault Detection Using Differential Signals n Simple Pin-Strapped Configuration Allows Battery
6801 TA01b
6801fb
1
LTC6801
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V+ to V–) .................................60V Input Voltage (Relative to V–)
BLOCK DIAGRAM
NEXT HIGHER CELL PACK
1 V+ C12
2 3 C11
12 C2
MUX
C1 13
V– 14
LTC6801
CONTROL
12
LOGIC
ADC
ENABLE ISOLATION
INPUT
“CELLS GOOD”
20
CLOCK SIGNAL
INPUT ENABLES
2
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6801fb
LTC6801
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, V+ = 43.2V, V– = 0V unless otherwise noted.
Each LTC6801 can operate with a battery stack voltage up to 60V and multiple LTC6801 devices can be stacked to monitor each individual cell in a long battery string. When multiple devices are stacked, the status signal of each LTC6801 can be daisy-chained, without opto-couplers or isolators, providing a single status output for the entire battery string.
*n = 2 to 12
PIN CONFIGURATION
V+ 1 C12 2 C11 3 C10 4 C9 5 C8 6 C7 7 C6 8 C5 9 C4 10 C3 11 C2 12 C1 13
V– 14 VTEMP1 15 VTEMP2 16
VREF 17 VREG 18
TOP VIEW
36 OV1 35 OV0 34 UV1 33 UV0 32 HYST 31 CC1 30 CC0 29 SLT 28 SLTOK 27 DC 26 EOUT 25 EOUT 24 SIN 23 SIN 22 SOUT 21 SOUT 20 EIN 19 EIN
For more information on lead free part marking, go to: /leadfree/ For more information on tape and reel specifications, go to: /tapeandreel/
C1 ............................................................ –0.3V to 9V C12 ...........................................V+ –0.3V to V+ + 0.3V All Other Pins (Not C Inputs) ................... –0.3V to 7V Voltage Between Inputs Cn to Cn-1* ............................................. –0.3V to 9V C12 to C8............................................... –0.3V to 25V C8 to C4................................................. –0.3V to 25V C4 to V– ................................................. –0.3V to 25V Operating Temperature Range LTC6801I.............................................. –40°C to 85°C LTC6801H .......................................... –40°C to 125°C Specified Temperature Range LTC6801I.............................................. –40°C to 85°C LTC6801H .......................................... –40°C to 125°C Junction Temperature ........................................... 150°C Storage Temperature Range................... –65°C to 150°C
LTC6801
FEATURES
n Monitors Up to 12 Li-Ion Cells in Series (60V Max) n Stackable Architecture Enables > 1000V Systems n 1% Maximum Overvoltage Detection Level Error n Adjustable Overvoltage and Undervoltage