參數(shù)資料
型號(hào)： LTC6801IG#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO36
封裝： LEAD FREE, PLASTIC, SSOP-36
文件頁數(shù)： 13/28頁
文件大?。?/td> 265K
代理商： LTC6801IG#TRPBF
LTC6801
20
6801fb
2.2k
10k
NTC
B = 3380
10k
NTC
B = 3380
2.2k
0.5μF
V+
C12
C11
C10
C9
C8
C7
C6
C5
C4
C3
C2
C1
V–
VTEMP1
VTEMP2
VREF
VREG
OV1
OV0
UV1
UV0
HYST
CC1
CC0
SLT
SLTOK
DC
EOUT
SIN
SOUT
EIN
LTC6801
6801 F10
0.5μF
+
–
LT6003
APPLICATIONS INFORMATION
CELL-VOLTAGE FILTERING
The LTC6801 employs a sampling system to perform its
analog-to-digital conversions and provides a conversion
result that is essentially an average over the 0.5ms conver-
sion window. If there is signicant noise at frequencies near
500kHz there may be aliasing in the delta-sigma modulator.
A lowpass lter with 30dB attenuation at 500kHz may be
benecial. Since the delta-sigma integration bandwidth is
about 1kHz, the lter corner need not be lower than this
to assure accurate conversions.
Series resistors of 1k may be inserted in the input paths
without introducing measurement error. Shunt capacitors
may be added from the cell inputs to V–, creating RC lter-
ing as shown in Figure 8. The combination of 1k and 10nF
is recommended as a robust, cost effective noise lter.
MEASURING VARIOUS CELL COUNTS
The LTC6801 is designed to measure up to 12 cells de-
pending on the state of the CC pins (See Table 5). When
using an LTC6801 congured for measuring less than
12 cells, for instance choosing to measure 8 cells by
Figure 10. Buffering VREF for Higher-Current Sensors.
Two Independent Probes With a +70°C Trip Point
Figure 9. Driving Thermistors Directly from VREF.
Two Independent Probes With a +60°C Trip Point
100k
500k
NTC
B = 4567
500k
NTC
B = 4567
100k
1μF
V+
C12
C11
C10
C9
C8
C7
C6
C5
C4
C3
C2
C1
V–
VTEMP1
VTEMP2
VREF
VREG
OV1
OV0
UV1
UV0
HYST
CC1
CC0
SLT
SLTOK
DC
EOUT
SIN
SOUT
EIN
LTC6801
6801 F09
1μF
Figure 8. Adding RC Filtering to the Cell inputs
6801 F08
V–
C1
C2
C3
1k
10nF
1k
10nF
1k
10nF
tying both CC1 and CC0 to the VREF pin, the highest cell
potential (in this case C8) must be connected to the V+
pin for proper operation. Unused cell connection pins (in
this case C9 to C12) may be left oating or may also be
tied to the highest cell potential.
相關(guān)PDF資料
PDF描述
LTC6801IG#PBF 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO36
LTC693IS#PBF 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
LTC694CN-3.3 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8
LTC694IN-3.3 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8
LTC694CN8-3.3#TRPBF 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8
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