LTC1760 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1760' PDF : 44 Pages View PDF
LTC1760
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TA = 25°C (Note 6). VDCIN = 20V, VBAT1 = 12V, VBAT2 = 12V, VVDDS = 3.3V,
VVCC2 = 5.2V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Thermistor
Thermistor Trip
COLD-RANGE to OVER-RANGE
CLOAD(MAX) = 300pF (Note 9)
R1A = R2A = 1130Ω ±1%
R1B = R2B = 54900Ω ±1%
l 95
100
105
kΩ
Thermistor Trip
IDEAL-RANGE to COLD-RANGE
CLOAD(MAX) = 300pF (Note 9)
R1A = R2A = 1130Ω ±1%
R1B = R2B = 54900Ω ±1%
l 28.5
30
32.5
kΩ
Thermistor Trip
HOT-RANGE to IDEAL-RANGE
CLOAD(MAX) = 300pF (Note 9)
R1A = R2A = 1130Ω ±1%
R1B = R2B = 54900Ω ±1%
C-Grade (Note 6)
I-Grade (Note 6)
l 2.85
3
3.15
kΩ
l 2.83
3
3.15
kΩ
Thermistor Trip
UNDER-RANGE to HOT-RANGE
CLOAD(MAX) = 300pF (Note 9)
R1A = R2A = 1130Ω ±1%
R1B = R2B = 54900Ω ±1%
l 425
500
575
Ω
Logic Levels
IPULLUP
SCL/SCL1/SCL2/SDA/SDA1/
SDA2 Input Low Voltage (VIL)
SCL/SCL1/SCL2/SDA/SDA1/
SDA2 Input High Voltage (VIH)
SCL/SCL1/SCL2/SDA/SDA1/
SDA2 Input Leakage Current
SCL/SCL1/SCL2/SDA/SDA1/
SDA2 Input Leakage Current
SCL1/SDA1/SCL2/SDA2 Pull-Up
Current When Not Connected to
SMBus Host
SCL1/SDA1/SCL2/SDA2
Series Impedance to Host SMBus
VSDA, VSCL, VSDA1, VSCL1,
VSDA2, VSCL2 = 0.8V
VSDA, VSCL, VSDA1, VSCL1, VSDA2,
VSCL2 = 2.1V
VSCL1, VSDA1, VSCL2, VSDA2 = 0.4V
VVCC2 = 4.85V and 5.55V (Current is Through
Internal Series Resistor and Schottky to VCC2)
VSDA1, VSCL1, VSDA2, VSCL2 = 0.8V
l
0.8
v
l 2.1
v
l –5
5
μA
l –5
5
μA
165
220
350
μA
l
300
Ω
SCL/SDA Output Low Voltage (VOL).
LTC1760 Driving the Pin
IPULLUP = 350μA
l
0.4
V
SCL1/SDA1/SCL2/SDA2 Pullup
Output Low Voltage (VOL).
LTC1760 Driving the Pin with Battery
SMBus not Connected to Host SMBus
IPULLUP Internal to LTC1760
l
0.4
V
SCL1/SDA1/SCL2/SDA2
IPULLUP = 350μA on Host Side
l
0.4
V
Output Low Voltage (VOL).
LTC1760 Driving the Pin with Battery
SMBus Connected to Host SMBus
SCL/SCL1/SCL2/SDA/SDA1/ SDA2/
SMBALERT Power Down Leakage
SMBALERT Output Low Voltage (VOL)
SMBALERT Output Pull-Up Current
VIL_VDDS
VIH_VDDS
VIL_MODE
VDDS Input Low Voltage (VIL)
VDDS Input High Voltage (VIH)
VDDS Operating Voltage
VDDS Operating Current
MODE Input Low Voltage (VIL)
VVCC2 = 0V, VVDDS = 0V,
VSCL, VSCL1, VSCL2, VSDA,
VSDA1, VSDA2, VSMBALERT = 5.5V
IPULLUP = 500μA
VSMBALERT = 0.4V
VSCL, VSDA = VVDDS , VVDDS = 5V
VVCC2 = 4.85V
l
2
μA
l
3.5
l
l 2.6
l
3
l
0.4
V
10
17.5
μA
1.5
V
V
5.5
V
18
μA
VVCC2 • 0.3
V
1760fa
6
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