Ordering Information - Analog Devices MAX16165 Manual

Evaluates: MAX16165/MAX16166
FAULT Input/Output
FAULT is bidirectional. It is active low input and active low open-drain output. Refer to the MAX16165/MAX16166 data sheet
for all conditions that assert a FAULT.
Note: If extended fault pulse width is desired, mount R26 and C18 to avoid channel skipping during initialization.
SKIP or DISABLE Channels
If fewer than four channels are required, skip a channel by connecting the SET_ pin to ABP pin. The sequencing is similar
with four channel sequencing, proceed as though the MAX16165/MAX16166 has fewer channels (e.g., if SET2 is connected
to ABP, all logic for channel 2 is removed from the state machine; no delay, no timer, no UV detection, and no fault triggered
from this channel). If all channels are skipped, the device asserts DONE and POK immediately after initialization.
Power Good Timer and Power Timer Input (PGT)
The Power Good Timer is used to check the capability of a power supply to reach a set voltage within a capacitor adjustable
delay (t ). Connect a capacitor (C3) between PGT and GND to adjust the sequencing delay period (t
PGT
the following formula to estimate the delay:
t = 5µ�� + 125��Ω × C3
PGT
is in seconds and C3 is in Farads. Leave PGT unconnected for a minimum 5μs (typ) delay. The accuracy of the
where t
PGT
delay is affected by the C3 capacitor leakage and tolerance. A low-leakage ceramic capacitor is recommended.
Open-Drain and Push-pull Outputs
The MAX16165 has open-drain outputs whereas the MAX16166 has push-pull outputs. Pullup resistors are required for
open-drain outputs. The exact value of the pullup resistors for the open-drain outputs is not critical, but some consideration
should be made to ensure the proper logic levels when the device is sinking current. For example, if VDD = 3.3V and the
pullup voltage is 5V, keep the sink current less than 3.2mA as shown in the Electrical Characteristics table of
MAX16165/16166 datasheet. As a result, the pullup resistor should be greater than 1.6kΩ. For a 12V pullup, the resistor
should be larger than 3.74kΩ. In the EV kit, R15, R18, R20, R22, R23, and R28 are pullup resistors and their values are set
to 10kΩ.
SET_IN Threshold and LDO Output Setting
The EV kit input-voltage thresholds are set to operate with 3.6V, 3.3V, 2.5V, and 1.8V (MAX16165/MAX16166) voltage
systems. All input-voltage thresholds can be reconfigured by replacing the corresponding resistors R33, R34, R35, R36,
R37, and R38 as shown in
and Resistor Value Selection section in the MAX38903 IC data sheet to calculate the new resistor values when reconfiguring
the EV kit input thresholds.

Ordering Information

PART
MAX16166EVKIT#
MAX16165EVKIT#*
#Denotes a RoHS-compliant device that may include lead(Pb) that is exempt under the RoHS requirements.
*Future product—contact factory for availability.
www.analog.com
Figure 1. Refer to the Applications Information section of the MAX16165/MAX16166 IC data sheet
TYPE
EV KIT
EV KIT
MAX16165/MAX16166 Evaluation Kit
) on the EV kit. Use
PGT
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