MAX34461EVKIT# Maxim Integrated, MAX34461EVKIT# Datasheet - Page 55

• Manufacturer Part Number: MAX34461EVKIT#
• Description: Power Management IC Development Tools MAX34461 Eval Kit
• Manufacturer: Maxim Integrated
• Type: Voltage Detectorsr

Specifications of MAX34461EVKIT#

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: MAX34461
• Input Voltage: 3 V to 3.6 V
• Output Voltage: 3 V to 3.6 V
• Interface Type: USB
• Part # Aliases: 90-34461#EVK

Table 33. MFR_TEMP_SENSOR_CONFIG
The MFR_TEMP_SENSOR_CONFIG command is used
to configure the temperature sensors. The MFR_TEMP_
SENSOR_CONFIG command is described in
To achieve the best results when using the device,
decouple V
0.1FF capacitor. If possible, use a high-quality, ceramic,
surface-mount capacitor. Surface-mount components
minimize lead inductance, which improves performance;
ceramic capacitors tend to have adequate high-frequen-
cy response for decoupling applications. Decouple the
REG18 regulator output using 1FF and 10nF capacitors
with a maximum ESR of 500mI.
MSDA, MSCL, SCL, SDA, FAULT, and ALERT are open-
drain pins and require external pullup resistors con-
nected to V
PSEN0–PSEN15 can be user-configured as either CMOS
push-pull or open-drain outputs. When configured as
open-drain (see MFR_PSEN_CONFIG), external pullup
resistors connected to V
logic levels.
Figure 9. Current-Measuring Circuit
Maxim Integrated
PMBus 16-Channel Voltage Monitor and Sequencer
14:0
BIT
15
ENABLE
DD
NAME
MFR_TEMP_SENSOR_CONFIG (F0h)
DD
V
0
DD
to realize high logic levels.
VOUT_SCALE_MONITOR = R x G x 32,767
TON_MAX_FAULT_LIMIT = 8000h TO FFFFh
POWER_GOOD_ON = 0000h
and V
Applications Information
, V
MAX34461
DDA
0 = Temperature sensor disabled.
1 = Temperature sensor enabled.
These bits always return a 0.
DDA
DD
, and REG18 Decoupling
power inputs each with a
are required to realize high
RSn
MEANING
Open-Drain Pins
100I
Table
1kI MAXIMUM OUTPUT IMPEDANCE
3V MAXIMUM OUTPUT VOLTAGE
33.
In systems where the power to the device may be not
always be present, a keep-alive circuit consisting of a
Schottky diode and a bulk capacitor can be added to
allow the device time to orderly shut down the power
supplies it is controlling before power is lost.
Some applications require the ability to configure the
device when it has been mounted on a PCB. In such
applications, a 3- or 4-wire header can be added to allow
access to the slave I
The maximum full-scale voltage on the ADC inputs is
2.048V (nominal). A resistor-divider must be used to
measure voltages greater than 1.8V. The maximum
source impedance to the RSn inputs is determined by the
ADC_TIME bits in MFR_MODE. See the
Operating Conditions
applications where voltages up to 2V can be applied
to the RSn inputs when V
series resistance of 100I is recommended to protect the
device by limiting power dissipation.
The RSn inputs normally measure voltages, but with
the addition of an external current-sense amplifier the
device can also be configured to measure current. Any
of the RSn inputs can be configured to measure current.
On channels that measure current, the sequencing for
that channel should be disabled by setting TON_MAX_
FAULT_LIMIT = 8000h to FFFFh. On these channels, the
associated PSENn output is available to be configured
as a GPO. Also, for these channels, POWER_GOOD_ON
should be set to 0000h to force power-good assertion
since this channel is not measuring voltage
MAX4376 (SINGLE)
MAX4377 (DUAL)
MAX4378 (QUAD)
CURRENT-
AMPLIFIER
Current Measurement on RSn Inputs
GAIN (G)
SENSE
Resistor-Dividers and Source
2
C pins.
Impedance for RSn Inputs
table for more information. In
SENSE
ELEMENT
(R)
DD
or V
MAX34461
Configuration Port
Keep-Alive Circuit
CURRENT
DDA
is grounded, a
Recommended
(Figure
9).
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