High-Voltage, Adjustable Sequencing/Supervisory Circuits

Simple Reset and Supervisory Circuits Operate from High Voltage and are Fully Adjustable

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The MAX16052/MAX16053 are a family of small, low-power, high-voltage monitoring circuits with sequencing 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 output. 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 automotive temperature range (-40°C to +125°C).

MAX16052, MAX16053: Simplified Functional Diagram MAX16052, MAX16053: Simplified Functional Diagram Enlarge+

Key Features

  • Less External Circuitry Results in Smaller Solution Size
    • Open-Drain (28V Tolerant) Output Allows Interfacing to 12V Intermediate Bus Voltage
    • Operates from VCC of 2.25V to 28V
    • Small 6-Pin SOT23 Package
  • Ideal for Use in Power-Supply Sequencing, Reset Sequencing, and Power-Switching Applications
    • Active-High Logic-Enable Input
    • 1.8% Accurate Adjustable Threshold Over Temperature
  • Fully Specified from -40°C to +125°C for Reliability in Extreme Temperatures
  • Low Supply Current (18µA typ) Reduces Power Consumption


  • Computers/Servers
  • Critical μP Monitoring
  • Intelligent Instruments
  • Medical Equipment
  • Portable Equipment
  • Set-Top Boxes
  • Telecom

See parametric specs for Power-Supply Sequencers and Voltage Trackers (44)

Part NumberOptionInterfaceInput Chan.VIN
Oper. Temp.
maxSee Notes
MAX16052 SequenceR/C Adjustable1
-40 to +85
-40 to +105
-40 to +125
0 to +70
$1.45 @1k

See parametric specs for Supervisors (1 Monitored Voltage) (252)

Part NumberReset Thresh.
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
min@ +25°CmaxSee Notes
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active High
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
250ms to 450ms
300ms to 1s
No Watchdog
Adjustable Reset Input
High Voltage (>6V)
See Data Sheet
Active High
See Data Sheet
$1.45 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: MAX16052.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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