LTC3882-1
7
Rev A
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Digital Inputs (SCL, SDA, RUN
n
,
FAULT
n
, SYNC, SHARE_CLOCK)
V
IH
Input High Voltage
SCL, SDA, RUN0, RUN1,
FAULT0
,
FAULT1
SYNC, SHARE_CLK
l
l
1.35
1.8
V
V
V
IL
Input Low Voltage
SCL, SDA, RUN0, RUN1,
FAULT0
,
FAULT1
SYNC, SHARE_CLK
l
l
0.8
0.6
V
V
V
HYST
Input Hysteresis
SCL, SDA
80
mV
C
IN
Input Capacitance
SCL, SDA, RUN0, RUN1,
FAULT0
,
FAULT1
, SYNC,
SHARE_CLK (Note 12)
10
pF
t
FILT
Input Digital Filter Delay
FAULT0
,
FAULT1
RUN0, RUN1
3
10
µs
µs
Digital Outputs (SCL, SDA, RUN
n
,
FAULT
n
, SYNC, SHARE_CLOCK,
ALERT
, PWM
n
, PGOOD
n
)
V
OL
Output Low Voltage
I
SINK
= 3mA; SDA, SCL, RUN0, RUN1,
FAULT0
,
FAULT1
, SYNC, SHARE_CLK,
ALERT
,
I
SINK
= 2mA; PWM
n
,
PGOOD
n
l
l
0.2
0.4
0.3
V
V
V
OH
PWM
n
Output High Voltage
I
SOURCE
= 2mA
l
2.7
V
I
LKG
Output Leakage Current
0V ≤ PWM0, PWM1, PGOOD0, PGOOD1 ≤ V
DD33
0V ≤
FAULT0
,
FAULT1,
SYNC, SHARE_CLK ≤ 3.6V
0V ≤ RUN0, RUN1 ≤ 5.5V
0V ≤ SCL, SDA,
ALERT
≤ 5.5V
l
–1
–5
–5
1
5
5
µA
µA
µA
t
RO
PWM
n
Output Rise Time
C
LOAD
= 30pF, 10% to 90%
5
ns
t
FO
PWM
n
Output Fall Time
C
LOAD
= 30pF, 90% to 10%
4
ns
Serial Bus Timing
f
SMB
Serial Bus Operating Frequency
l
10
400
kHz
t
BUF
Bus Free Time Between Stop and Start
l
1.3
µs
t
HD,STA
Hold Time After (Repeated) Start
Condition. After This Period, the First
Clock Is Generated
l
0.6
µs
t
SU,STA
Repeated Start Condition Setup Time
l
0.6
µs
t
SU,STO
Stop Condition Setup Time
l
0.6
µs
t
HD,DAT
Data Hold Time:
Receiving Data
Transmitting Data
l
l
0
0.3
0.9
ns
µs
t
SU,DAT
Input Data Setup Time
l
100
ns
t
TIMEOUT
Clock Low Timeout
l
25
35
ms
t
LOW
Serial Clock Low Period
l
1.3
10000
µs
t
HIGH
Serial Clock High Period
l
0.6
µs
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
J
= 25°C (Note 2). V
CC
= 5V, V
SENSE0
+
= V
SENSE1
+
= 1.8V, V
SENSE0
–
=
V
SENSE1
–
= I
AVG_GND
= GND = 0V, f
SYNC
= 500kHz (externally driven) unless otherwise specified.
