Datasheet

PMBus 6-Channel Power-Supply Manager
MAX34440
41Maxim Integrated
Table 26. MFR_TEMP_SENSOR_CONFIG
1) Sets the NONE OF THE ABOVE bit in STATUS_BYTE.
2) Sets the NONE OF THE ABOVE and MFR bits in
STATUS_WORD.
3) Sets the MARGIN_FAULT bit in STATUS_MFR_SPECIFIC.
4) Notifies the host through ALERT assertion (if enabled
in MFR_MODE).
MFR_TEMP_SENSOR_CONFIG (F0h)
The MFR_TEMP_SENSOR_CONFIG command is used to
configure the temperature sensors. Table 26 describes
the MFR_TEMP_SENSOR_CONFIG command.
Applications Information
Power-Supply Decoupling
To achieve the best results when using the device,
decouple the V
DD
power supply with a 0.1FF capacitor.
Use a high-quality, ceramic, surface-mount capacitor
if possible. Surface-mount components minimize lead
inductance, which improves performance, and ceram-
ic capacitors tend to have adequate high-frequency
response for decoupling applications.
Decouple the REG18 regulator outputs using 1FF and
10nF capacitors. Decouple the REG25 pin with 30µF to
47µF of capacitance.
Do not connect other circuitry to either of these pins.
Open-Drain Pins
MSDA, MSCL, SCL, SDA, FAULT, and ALERT are open-
drain pins and require external pullup resistors con-
nected to V
DD
to realize high logic levels.
PSEN0 to PSEN5 can be user-configured as either
CMOS push-pull or open-drain outputs. When config-
ured as open-drain, external pullup resistors connected
to V
DD
are required to realize high logic levels (see the
MFR_MODE settings).
Protecting Input Pins
In applications where voltages can be applied to the RS
or CONTROL signals, when V
DD
is grounded, a series
100ω resistor is recommended to protect the device by
limiting power dissipation.
BIT BIT NAME MEANING
15 ENABLE
Clearing and setting this bit reinitializes the temperature sensor.
0 = Temperature sensor disabled.
1 = Temperature sensor enabled.
14:0 0 These bits always return a 0.