MAX1619
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MAX1619

Remote/Local Temperature Sensor with Dual Alarm Outputs and SMBus Serial Interface

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Alarm Outputs Manage System Temperature to Ensure Performance, Reliability and Protection

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Models 2
1ku List Price Starting From $7.16
Features
  • Two Channels Measure Both Remote and Local Temperatures
  • No Calibration Required
  • SMBus 2-Wire Serial Interface
  • Programmable Under/Overtemperature Alarms
  • Active-Low OVERT Output for Fan Control
  • Supports SMBus Alert Response
  • Supports Manufacturer and Device ID Codes
  • Accuracy
    • ±2°C (+60°C to +100°C, local)
    • ±3°C (-40°C to +125°C, local)
    • ±3°C (+60°C to +100°C, remote)
  • 3µA (typ) Standby Supply Current
  • 70µA (max) Supply Current in Auto-Convert Mode
  • +3V to +5.5V Supply Range
  • Write-Once Protection
  • Small 16-Pin QSOP Package
Additional Details
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The MAX1619 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor-typically a low-cost, easily mounted 2N3904 NPN type-that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.

The 2-wire serial interface accepts standard System Management Bus (SMBus™) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. The data format is 7 bits plus sign, with each bit corresponding to 1°C, in two's complement format. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate allows the user to control the supply-current drain.

The MAX1619 is nearly identical to the popular MAX1617A, with the additional feature of an overtemperature alarm output (active-low OVERT) that responds to the remote temperature; this is optimal for fan control.

Applications

  • Central Office Telecom Equipment
  • Computers: Desktop, Workstation, Server
  • Industrial Controls
  • LAN Servers
  • Multichip Modules
  • Smart Battery Packs/Chargers
  • Test and Measurement Equipment
Part Models 2
1ku List Price Starting From $7.16

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Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX1619MEE+
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Product Lifecycle

PCN

Mar 13, 2023

- 2361N

WAFER FAB

MAX1619MEE+

PRODUCTION

MAX1619MEE+T

PRODUCTION

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Part Models

Product Lifecycle

PCN

Mar 13, 2023

- 2361N

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WAFER FAB

MAX1619MEE+

PRODUCTION

MAX1619MEE+T

PRODUCTION

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