MAX16052_10 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – High-Voltage, Adjustable Sequencing/Supervisory Circuits

19-4144; Rev 2; 1/10
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
General Description
The MAX16052/MAX16053 are a family of small, low-
power, high-voltage monitoring circuits with sequenc-
ing capability. These miniature devices offer very wide
flexibility with an adjustable voltage threshold and an
external capacitor-adjustable time delay. These
devices are ideal for use in power-supply sequencing,
reset sequencing, and power switching applications.
Multiple devices can be cascaded for complex
sequencing applications.
A high-impedance input (IN) with a 0.5V threshold
allows an external resistive divider to set the monitored
threshold. The output (OUT) asserts high when the
input voltage rises above the 0.5V threshold and the
enable input (EN) is asserted high. When the voltage at
IN falls below 0.495V or when the enable input is
deasserted (EN = low), the output deasserts (OUT =
low). The MAX16052/MAX16053 provide a capacitor
programmable delay time from when the voltage at IN
rises above 0.5V to when the output is asserted.
The MAX16052 offers an active-high open-drain output
while the MAX16053 offers an active-high push-pull out-
put. Both devices operate from a 2.25V to 28V supply
voltage and feature an active-high enable input. The
MAX16052/MAX16053 are available in a tiny 6-pin
SOT23 package and are fully specified over the auto-
motive temperature range (-40°C to +125°C).
Applications
Automotive
Computers/Servers
Medical Equipment
Critical µP Monitoring
Intelligent Instruments
Set-Top Boxes
Portable Equipment
Telecom
Features
o 1.8% Accurate Adjustable Threshold Over
Temperature
o Open-Drain (28V Tolerant) Output Allows
Interfacing to 12V Intermediate Bus Voltage
o Operates from V_CC of 2.25V to 28V
o Low Supply Current (18µA typ)
o Capacitor-Adjustable Delay
o Active-High Logic-Enable Input
o Fully Specified from -40°C to +125°C
o Small 6-Pin SOT23 Package
Ordering Information
PART
OUTPUT
PIN-
PACKAGE
TOP
MARK
MAX16052AUT+T Open-Drain 6 SOT23
+ACLW
MAX16053AUT+T Push-Pull 6 SOT23
+ACLX
Note: All devices operate over the -40°C to +125°C operating
automotive temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel, offered in 2.5k increments.
Pin Configuration
TOP VIEW
1 EN
CDELAY 6
MAX16052
2 GND _MAX16053 V_CC 5
3 IN
OUT 4
SOT23
Typical Operating Circuit
DC-DC
12V
CONVERTER
EN
V_CC
IN MAX16052 OUT
CDELAY
GND
IN
EN
OUT ^0.9V
DC-DC
CONVERTER
EN
V_CC
IN MAX16052 OUT
CDELAY
GND
________________________________________________________________ Maxim Integrated Products 1
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