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Highly Integrated, 4-Channel Sequencer and Supervisor

Widest Voltage Range Sequencer in Smallest Footprint with Integrated Supervisory

Product Details

Parametric specs for Power-Supply Sequencers and Voltage Trackers
# Input Channels 4
Interface R/C Adjustable
Option Monitor
Sequence
VDD Supervising
VIN (V) (max) 2.7V to 16V
Package/Pins WLP/20
Parametric specs for Supervisors (> 5 Monitored Voltages)
Reset Thresh. (V) >=5.5
Reset Out Push-Pull
# Voltages Monitored 5
Interface R/C Adjustable
tRESET (min) 20ms to 2000ms
Supervisor Features High Voltage (>6V)
Package/Pins WLP/20
Budgetary
Price (See Notes)
4.08
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Simplified Block Diagram

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Parameters

Parametric specs for Power-Supply Sequencers and Voltage Trackers
# Input Channels 4
Interface R/C Adjustable
Option Monitor
Sequence
VDD Supervising
VIN (V) (max) 2.7V to 16V
Package/Pins WLP/20
Parametric specs for Supervisors (<u>></u> 5 Monitored Voltages)
Reset Thresh. (V) >=5.5
Reset Out Push-Pull
# Voltages Monitored 5
Interface R/C Adjustable
tRESET (min) 20ms to 2000ms
Supervisor Features High Voltage (>6V)
Package/Pins WLP/20
Budgetary
Price (See Notes)
4.08

Key Features

  • 2.7V to 16.0V Wide Operating Voltage Range
  • Monitor Up to 5 Voltages
  • Sequence Up to 4 Voltages
  • Power-Off in Reverse Order or Simultaneously
  • Unlimited Daisy Chain
  • Capacitor-Adjustable Sequencing Delay
  • Capacitor-Adjustable Power Good Timeout
  • Resistor-Configurable Power-Supply On and Off Thresholds
  • Open-drain (MAX16165)/Push-pull (MAX16166) Outputs
  • POK Output for System Microcontroller Reset
  • ±1.5% Threshold Accuracy
  • Bidirectional Active-Low FAULT Input/Output
  • 4x5-Bump WLP and 20L TQFN Package
  • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • FPGA/ASIC Power Supply Sequencing
  • Industrial Sensors and Motor Controls
  • Latch-Up Prevention and Inrush Current Protection in Multi-Supply Systems
  • Networking Equipment
  • Servers and Security Cameras
  • Test Equipment

Description

The MAX16165/MAX16166 monitor up to five voltages and sequence up to four voltages. These devices provide an adjustable delay as each supply is turned on as well as monitor each power-supply voltage, including the input voltage VDD.

The MAX16165/MAX16166 operate from a supply range of 2.7V to 16V and have an internal regulator output (ABP), power internal circuits, and supply more than 1mA additional current to any external circuitry.

The sequencing is enabled by two inputs, ON and active-low OFF. A rising edge on the ON input initiates power-on sequencing of the channels whereas a falling edge on active-low OFF input initiates power-off sequencing. During the power-on sequencing, when all of the voltages reach their final values, a sequencing done output DONE asserts high followed by a Power-OK (POK) output after the reset delay timer has expired, allowing the microcontroller (µC) to operate. If any voltage falls below its threshold, the reset output asserts and all voltage supplies are turned off. When the sequencer initiates a power-off sequencing, the MAX16165/MAX16166 can reverse sequence the outputs.

Output options available are open-drain (MAX16165) and push-pull (MAX16166). The MAX16165/MAX16166 can be daisy-chained unlimited amount to time to control any number of voltages in a system.

The MAX16165/MAX16166 feature a bidirectional active-low FAULT input/output, which asserts low during any fault condition. Active-low FAULT stays low as long as an undervoltage event is present at UVSET Input and it is a one-shot output during all other active-low FAULT conditions. An external signal pulling active-low FAULT low disables all outputs immediately. The MAX16165/MAX16166 are available in a 1.63mm x 2.03mm, 20-bump Wafer-Level Package (WLP) and a 4mm x 4mm, 20L TQFN package. The device is fully specified over the -40°C to +125°C operating temperature range.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.