Analog Devices LTM4683 Manual page 10

LTM4683
ELECTRICAL CHARACTERISTICS
operating temperature range (Note 2). Specified as each individual output channel (Note 4). T
RUNP = 12V, FREQUENCY_SWITCH = 425kHz and V
EEPROM settings and per Test Circuit 1, unless otherwise noted.
SYMBOL PARAMETER
Open-Drain Outputs SCL_nn, SDA_nn, FAULTn, ALERT_nn, RUNn, SHARE_CLK_nn, PGOODn
V Output Low Voltage
OL
Digital Inputs SHARE_CLK_nn, WP_nn (Note 14)
V Input High Threshold Voltage
IH
V Input Low Threshold Voltage
IL
Digital Filtering of FAULTn (Note 14)
I Input Digital Filtering FAULTn
FLTG
Digital Filtering of PGOODn (Note 14)
I Output Digital Filtering PGOODn
FLTG
Digital Filtering of RUNn (Note 14)
I Input Digital Filtering RUN
FLTG
PMBus Interface Timing Characteristics (Note 14)
f Serial Bus Operating Frequency
SCL
t Bus Free Time Between Stop
BUF
and Start
t Hold Time After Repeated Start
HD(STA)
Condition after This Period, the First
Clock is Generated
t Repeated Start Condition Setup Time
SU(STA)
t Stop Condition Setup Time
SU(ST0)
t Date Hold Time
HD(DAT)
Receiving Data
Transmitting Data
t Data Setup Time
SU(DAT)
Receiving Data
t Stuck PMBus Timer Non-Block Reads
TIMEOUT_SMB
Stuck PMBus Timer Block Reads
t Serial Clock Low Period
LOW
t Serial Clock High Period
HIGH
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTM4683 is tested under pulsed-load conditions such that
T ≈ T . The LTM4683E is guaranteed to meet performance specifications
J A
over the 0°C to 125°C internal operating temperature range. Specifications
over the –40°C to 125°C internal operating temperature range are assured
by design, characterization, and correlation with statistical process
controls. The LTM4683I is guaranteed to meet specifications over the
full –40°C to 125°C internal operating temperature range. T
from the ambient temperature T
A
to the following formula: T = T + (P
J A
10
commanded to 0.5V unless otherwise noted. Configured with factory-default
OUTn
CONDITIONS
I = 3mA
SINK
Measured from the Last PMBus Start Event
is calculated
J
and the power dissipation P according
D
• θ ).
D JA
For more information
The denotes the specifications which apply over the specified internal
l
Note that the maximum ambient temperature consistent with these
specifications is determined by specific operating conditions in
conjunction with board layout, the rated package thermal resistance,
and other environmental factors.
Note 3: All currents into the device pins are positive; all currents out of
the device pins are negative. All voltages are referenced to ground unless
otherwise specified.
Note 4: The power inputs—V
outputs—V and V
OUT0, 1
shorthand notation is used in this document that allows these parameters
to be referred to by "V
a value of 0 to 3. This italicized "n " notation and convention is extended
to encompass all such pin names, and register names with channel-
specific, i.e., paged data. For example, VOUT_ COMMANDn refers to the
VOUT_COMMAND command code data located in Pages 0 and 1, which in
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= 25°C, V , SV = 12V, RUNn = 3.3V,
A IN IN
MIN TYP
1.5
l
0.6 1
l
3
100
10
10
l
1.3
l
0.6
l
0.6
l
0.6
l
0
l
0.3
l
0.1
l
32
255
1.3
l
0.6
l
and V —and their respective power
IN01 IN23
—are tested independently in production. A
OUT2, 3
" and "V ", where n is permitted to take on
INnn OUTn
MAX UNITS
0.4 V
1.8 V
V
µs
µs
µs
400 kHz
µs
µs
10000 µs
µs
µs
0.9 µs
µs
ms
10000 µs
µs
Rev. 0