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MAXIM MAX1978ETM+T product image
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MAXIM MAX1978ETM+TRoHS

Manufacturer
MAXIM
MPN
MAX1978ETM+T
LCSC Part #
C962091
Packaging
TQFN-48-EP(7x7)
Customer #
Key Attributes
Integrated Temperature Controllers for Peltier Modules
Datasheetpdf iconMAXIM MAX1978ETM+T

Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Power Management - Specialized
ManufacturerMAXIM
PackagingTQFN-48-EP(7x7)
FeaturesAdjustable current limiting;Overcurrent Protection
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Features

AI Translation
  • The MAX1978/MAX1979 are the smallest, safest, most accurate complete single-chip temperature controllers for Peltier thermoelectric cooler (TEC) modules.
  • On-chip power FETs and thermal control-loop circuitry minimize external components while maintaining high efficiency.
  • Selectable 500kHz/1MHz switching frequency and a unique ripple-cancellation scheme optimize component size and efficiency while reducing noise.
  • Switching speeds of internal MOSFETs are optimized to reduce noise and EMI.
  • An ultralow-drift chopper amplifier maintains ±0.001°C temperature stability.
  • Output current, rather than voltage, is directly controlled to eliminate current surges.
  • Individual heating and cooling current and voltage limits provide the highest level of TEC protection.
  • The MAX1978 operates from a single supply and provides bipolar ±3A output by biasing the TEC between the outputs of two synchronous buck regulators.
  • True bipolar operation controls temperature without “dead zones” or other nonlinearities at low load currents.
  • The control system does not hunt when the set point is very close to the natural operating point, where only a small amount of heating or cooling is needed.
  • An analog control signal precisely sets the TEC current.
  • The MAX1979 provides unipolar output up to 6A.
  • A chopper-stabilized instrumentation amplifier and a highprecision integrator amplifier are supplied to create a proportional-integral (PI) or proportional-integral-derivative (PID) controller.
  • The instrumentation amplifier can interface to an external NTC or PTC thermistor, thermocouple, or semiconductor temperature sensor.
  • Analog outputs are provided to monitor TEC temperature and current.
  • In addition, separate overtemperature and undertemperature outputs indicate when the TEC temperature is out of range.
  • An on-chip voltage reference provides bias for a thermistor bridge.
  • The MAX1978/MAX1979 are available in a low-profile 48-lead thin QFN-EP package and is specified over the -40°C to +85°C temperature range.
  • The thermally enhanced QFN-EP package with exposed metal pad minimizes operating junction temperature.
  • An evaluation kit is available to speed designs.
  • Smallest, Safest, Most Accurate Complete Single-Chip Controller
  • On-Chip Power MOSFETS—No External FETs
  • Circuit Footprint <0.93in²
  • Circuit Height <3mm
  • Temperature Stability to 0.001°C
  • Integrated Precision Integrator and Chopper Stabilized Op Amps
  • Accurate, Independent Heating and Cooling Current Limits
  • Eliminates Surges By Directly Controlling TEC Current
  • Adjustable Differential TEC Voltage Limit
  • Low-Ripple and Low-Noise Design
  • TEC Current Monitor
  • Temperature Monitor
  • Over- and Undertemperature Alarm
  • Bipolar ±3A Output Current (MAX1978)
  • Unipolar ±6A Output Current (MAX1979)

Applications

AI Translation
  • Fiber Optic Laser Modules
  • WDM, DWDM Laser-Diode Temperature Control
  • Fiber Optic Network Equipment
  • EDFA Optical Amplifiers
  • Telecom Fiber Interfaces
  • ATE
In-Stock: 2,597
2,597 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 13.4968$ 13.50
10+$ 12.2366$ 122.37
30+$ 10.8844$ 326.53
100+$ 9.9764$ 997.64
Standard Packaging2500/Full Reel
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