MAX16134 Datasheet, PDF (15/23 Pages) Maxim Integrated Products – Low-Voltage, Precision, Single/Dual/Triple/Quad-Voltage μP Supervisors

MAX16132–MAX16135
Low-Voltage, Precision, Single/Dual/Triple/
Quad-Voltage μP Supervisors
Detailed Description
Detailed Description
The MAX16132–MAX16135 are single, dual, triple, and
quad-voltage μP supervisors designed to maintain system
integrity in multi-supply systems. These devices offer
undervoltage and overvoltage window threshold monitoring
within ±1% accuracy over temperature.
Input Voltage
The MAX16132–MAX16135 feature factory-programmable
input-voltage-level options from 0.5V to 5V. See Table 1
thru Table 4, as well as the Selector Guide for standard
voltage options. The selection of nominal input voltage does
not set the voltage threshold levels. For the MAX16132–
MAX16135, the undervoltage and overvoltage thresholds
are determined by the selection of input tolerance.See
the Electrical Characteristics table and Input Tolerance/
Hysteresis section for more detail.
Input Tolerance/Hysteresis
The MAX16132–MAX1635 are designed to offer eight
factory-programmable input tolerance levels from ±4% to
±11% in ±1% increments. The input tolerance level sets
the undervotlage and overvoltage threshold levels with
respect to the selected nominal input voltage. See Table
5 thru Table 8 for hysteresis and tolerance values.
The MAX16132–MAX16135 are immune to short IN_
transients. Each of the internal comparators are factory
set to either 0.5% or 0.25% hysteresis with respect to the
selected nominal input voltage. Hysteresis provides input
immunity to ambient noise without significantly reduc-
ing the input threshold accuracy. See the Maximum IN_
Transient Duration vs. Reset Threshold Overdrive graph
in the Typical Operating Characteristics section .
Reset Outputs
The MAX16132–MAX16134 feature independent, active-
low, open-drain reset outputs, while the MAX16135 features
dual reset outputs. For the MAX16132–MAX16134, when
an input voltage falls outside the set window threshold,
the corresponding reset outputs asserts. The reset output
de-asserts after the reset timeout period when the input
voltage falls within the window threshold. See Figure 1 for
more detail.
The MAX16135 feature dual reset outputs. RESET1
asserts when V_IN1 and/or V_IN2 falls outside the set
window threshold. RESET2 asserts when V_IN3 and/or
V_IN4 falls outside the set window threshold. RESET1 and
RESET2 de-assert after the reset timeout period when
their corresponding input voltages are within the set win-
dow threshold. At power-up, resets stay asserted for the
reset timeout period once V_DD is above the UVLO. All
reset outputs require a pullup resistor to V_DD.
Figure 1. Independent Reset Output Timing Diagram (MAX16133/MAX16134)
www.maximintegrated.com
Maxim Integrated │  15