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LTC1695CS5 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC1695CS5
Description  SMBus/I2C Fan Speed Controller in SOT-23
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1695CS5 Datasheet(HTML) 3 Page - Linear Technology

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LTC1695
3
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise stated.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: INL, DNL specs are specified under a 1mA ILOAD condition to keep the
linear regulator from operating in dropout at higher DAC codes. DNL is
measured from code 0 to code 63, taking into account the untrimmed offset
at code 0. Please refer to the Definitions section for more details.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SMBus TIMING (Note 4)
fSMB
SMBus Operating Frequency
q
10
100
kHz
tBUF
Bus Free Time Between Stop and Start
q
4.7
µs
tHD(STA)
Hold Time After (Repeated) Start Condition
q
4.0
µs
tSU(STA)
Repeated Start Condition Setup Time
q
4.7
µs
tSU(STO)
Stop Condition Setup Time
q
4.0
µs
tHD(DAT)
Data Hold Time
q
300
ns
tSU(DAT)
Data Setup Time
q
250
ns
tLOW
Clock Low Period
q
4.7
µs
tHIGH
Clock High Period
q
4.0
50
µs
tf
Clock/Data Fall Time
q
300
ns
tr
Clock/Data Rise Time
q
1000
ns
TYPICAL PERFOR A CE CHARACTERISTICS
Note 3: This typical specification is based on lab measurements and is not
production tested.
Note 4: Guaranteed by design and not tested. Please refer to the Timing
Diagram section for additional information.
DAC CODE
0
6
5
4
3
2
1
0
10
20
30
40
1695 • G01
50
60 63
VCC = 5V
TA = 25°C
ILOAD = 1mA
TEMPERATURE (
°C)
–50
250
200
150
100
50
0
0
50
75
1695 • G03
–25
25
100
125
CODE 0
CODE 63
VCC = 5V
SUPPLY VOLTAGE (V)
4.0
6.0
1695 • G02
4.5
5.0
5.5
250
200
150
100
50
0
CODE 0
CODE 63
TA = 25°C
Output Voltage vs
DAC Code
No Load Supply Current vs
Temperature
No Load Supply Current vs Supply
Voltage



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