Datasheet

PMBus 6-Channel Power-Supply Manager
MAX34440
8 Maxim Integrated
I
2
C/SMBus INTERFACE ELECTRICAL SPECIFICATIONS
(V
DD
= 2.7V to 5.5V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
DD
= 3.3V, T
A
= +25NC, unless otherwise noted.)
Note 1:
All voltages are referenced to ground (V
SS
). Currents entering the IC are specified as positive, and currents exiting the IC
are negative.
Note 2: This does not include pin input/output currents.
Note 3: Guaranteed by design.
Note 4: ADC has no missing codes.
Note 5: Commands MFR_MODE, STORE_DEFAULT_ALL, and RESTORE_DEFAULT_ALL require a bus free time of 250ms.
I
2
C/SMBus Timing
SCL
NOTE: TIMING IS REFERENCED TO V
IL(MAX)
AND V
IH(MIN)
.
SDA
STOP START REPEATED
START
t
BUF
t
HD:STA
t
HD:DAT
t
SU:DAT
t
SU:STO
t
HD:STA
t
SP
t
SU:STA
t
HIGH
t
R
t
F
t
LOW
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCL Clock Frequency f
SCL
10 100 kHz
Bus Free Time Between STOP
and START Conditions
t
BUF
(Note 5) 1 ms
Hold Time (Repeated) START
Condition
t
HD:STA
4.0 Fs
Low Period of SCL t
LOW
4.7 Fs
High Period of SCL t
HIGH
4.0 Fs
Data Hold Time t
HD:DAT
Receive 0
ns
Transmit 300
Data Setup Time t
SU:DAT
100 ns
START Setup Time t
SU:STA
4.7 Fs
SDA and SCL Rise Time t
R
300 ns
SDA and SCL Fall Time t
F
300 ns
STOP Setup Time t
SU:STO
4.0 Fs
Clock Low Timeout t
TO
25 35 ms