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ISL97671
Electrical Specifications All specifications below are tested at T A = 25°C; V IN = 12V, EN = 5V, R SET = 20.52k Ω , unless otherwise noted.
Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
MIN
MAX
PARAMETER
DESCRIPTION
CONDITION
(Note 8)
TYP
(Note 8) UNIT
FAULT PIN
I FAULT
V FAULT
LXstart_thres
ILXStart-up
Fault Pull-down Current
Fault Clamp Voltage with Respect to V IN
LX Start-up Threshold
LX Start-up Current
V IN = 12V
V IN = 12, V IN - V FAULT
12
6
1.3
1
21
7
1.4
3.5
30
8.3
1.5
5
μA
V
V
mA
SMBus/I 2 C
INTERFACE
VIL
Guaranteed Range for Data, Clock Input Low
0.8
V
Voltage
VIH
Guaranteed Range for Data, Clock Input High
1.5
VDD
V
Voltage
VOL
SMBus/I 2 C Data line Logic Low Voltage
I PULLUP = 4mA
0.17
V
I LEAK
Input Leakage On SMBData/SMBClk
Measured at 4.8V
-10
10
μA
SMBus/I 2 C TIMING SPECIFICATIONS (Note 10)
t EN -SMB/I 2 C
Minimum Time Between EN high and
SMBus/I 2 C Enabled
1μF capacitor on VDC
2
ms
PWS
Pulse Width Suppression on SMBCLK/SMBDAT
0.15
0.45
μs
f SMB
SMBus/I 2 C
Clock Frequency
400
kHz
t BUF
t HD:STA
t SU:STA
t SU:STO
t HD:DAT
t SU:DAT
t LOW
t HIGH
t F
t R
Bus Free Time Between Stop and Start
Condition
Hold Time After (Repeated) START Condition.
After this Period, the First Clock is Generated
Repeated Start Condition Setup Time
Stop Condition Setup Time
Data Hold Time
Data Setup Time
Clock Low Period
Clock High Period
Clock/data Fall Time
Clock/data Rise Time
1.3
0.6
0.6
0.6
300
100
1.3
0.6
300
300
μs
μs
μs
μs
ns
ns
μs
μs
ns
ns
NOTES:
8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
9. Independent from the numbers of LEDs, at minimum V IN of 4.5V, maximum V OUT is limited to 35V. And at maximum V IN of 26.5V, minimum V OUT is
limited 28V.
10. Limits established by characterization and are not production tested.
7
FN7631.3
August 14, 2012
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