Datasheet

MAX34451 PMBus 16-Channel V/I Monitor and
12-Channel Sequencer/Marginer
www.maximintegrated.com
Maxim Integrated │ 10
Pin Description (continued)
*All pins except the power pins, ALERT, and ADDR are high impedance during device power-up and reset.
**AI = Analog input, AO = Analog output, DI = Digital input, DIO = Digital input/output, and DO = Digital output.
Expanded Pin Description
PIN* NAME TYPE** FUNCTION
49
RS12 AI
ADCVoltage-SenseInput12.ConnecttoV
SS
if unused.
GPI12 AI
General-PurposeInput12.ConnecttoV
SS
if unused.
50
RS11 AI
ADCVoltage-SenseInput11.ConnecttoV
SS
if unused.
GPI11 AI
General-PurposeInput11.ConnecttoV
SS
if unused.
51
RS10 AI
ADCVoltage-SenseInput10.ConnecttoV
SS
if unused.
GPI10 AI
General-PurposeInput10.ConnecttoV
SS
if unused.
52
RS9 AI
ADCVoltage-SenseInput9.ConnecttoV
SS
if unused.
GPI9 AI
General-PurposeInput9.ConnecttoV
SS
if unused.
53
RS8 AI
ADCVoltage-SenseInput8.ConnecttoV
SS
if unused.
GPI8 AI
General-PurposeInput8.ConnecttoV
SS
if unused.
54
RS7 AI
ADCVoltage-SenseInput7.ConnecttoV
SS
if unused.
GPI7 AI
General-PurposeInput7.ConnecttoV
SS
if unused.
55
RS6 AI
ADCVoltage-SenseInput6.ConnecttoV
SS
if unused.
GPI6 AI
General-PurposeInput6.ConnecttoV
SS
if unused.
56
RS5 AI
ADCVoltage-SenseInput5.ConnecttoV
SS
if unused.
GPI5 AI
General-PurposeInput5.ConnecttoV
SS
if unused.
— EP/V
SS
Power
ExposedPad(BottomSideofPackage).Mustbeconnectedtolocalground.
Theexposedpadisthegroundreference(V
SS
)forthedevice.
PIN FUNCTION
PSEN0–PSEN11
ThePSEN0–PSEN11outputsareprogrammablewiththeMFR_PSEN_CONFIGcommandforeitheractive-
high or active-low operation and can be either open drain or push-pull. If not used for power-supply enables,
theseoutputscanberepurposedasgeneral-purposeoutputsusingtheMFR_PSEN_CONFIGcommand.If
these pins are used to enable power supplies, it is highly recommended that they have external pullups or
pulldowns to force the supplies into an off state when the device is not active.
PWM0–PWM7
ThePWM0–PWM7outputsarehighimpedancewhenthemarginingisdisabled.A100%dutycycleimplies
the pins are continuously high. If not used for margining, these pins can be repurposed as general-purpose
outputswiththeMFR_PWM_CONFIGcommand.
FAULT0–FAULT2
The FAULT0–FAULT2 pins operate independently. Any global channel can be enabled with the
MFR_FAULT_RESPONSEcommandtoassertoneormoreoftheFAULTn signals. Also, each global
channel can be enabled to shut down when one or more of the FAULTn signals asserts. These pins are used
to provide hardware control for power supplies across multiple devices. These outputs are unconditionally
deasserted while RST is asserted or the device is power cycled. After device reset and upon device power-
up, these outputs are pulled low immediately after program recall and held low until monitoring starts. Once
monitoring starts, the FAULTn signals are released if no enabled faults are present.