MAX1979ETM Maxim Integrated Products, MAX1979ETM Datasheet
MAX1979ETM
Specifications of MAX1979ETM
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MAX1979ETM Summary of contents
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... Adjustable Differential TEC Voltage Limit o Low-Ripple and Low-Noise Design o TEC Current Monitor o Temperature Monitor o Over- and Undertemperature Alarm o Bipolar ±3A Output Current (MAX1978) o Unipolar +6A Output Current (MAX1979) PART MAX1978ETM+ MAX1979ETM Exposed pad. + Denotes a lead(Pb)-free/RoHS-compliant package. TOP VIEW + OS2 1 N.C. 2 PGND2 ...
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... Thin QFN-EP (derate 26.3mW/°C above +70°C) (Note 2) .................2.105W Operating Temperature Ranges + 0.3V) DD MAX1978ETM ..................................................-40°C to +85°C MAX1979ETM ..................................................-40°C to +85°C + 0.3V) DD Maximum Junction Temperature .....................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C . Applications that forward bias these diodes should not exceed the IC’ +25° ...
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ELECTRICAL CHARACTERISTICS (continued 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, T SHDN unless otherwise noted. Typical values ...
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Integrated Temperature Controllers for Peltier Modules ELECTRICAL CHARACTERISTICS (continued 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, T SHDN DD DD ...
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ELECTRICAL CHARACTERISTICS ( 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, T SHDN unless otherwise noted.) (Note 5) PARAMETER ...
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Integrated Temperature Controllers for Peltier Modules ELECTRICAL CHARACTERISTICS (continued 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, T SHDN DD DD ...
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GND, RTEC = 1Ω, circuit of Figure CTLI FREQ EFFICIENCY vs. TEC CURRENT 1.1Ω TEC ...
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Integrated Temperature Controllers for Peltier Modules ( GND, RTEC = 1Ω, circuit of Figure CTLI FREQ SWITCHING FREQUENCY CHANGE vs. INPUT SUPPLY -10 -15 -20 -25 ...
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GND, RTEC = 1Ω, circuit of Figure CTLI FREQ THERMAL STABILITY, ROOM TEMPERATURE TEMPERATURE 0.001°C/div I = +25°C TEC T = +25°C A 4s/div PIN NAME Output Sense 2. ...
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Integrated Temperature Controllers for Peltier Modules PIN NAME 23 AIN- Undedicated Chopper-Stabilized Amplifier Inverting Input 24 AOUT Undedicated Chopper-Stabilized Amplifier Output Power 1 Inputs. Must be same voltage Bypass to PGND1 with a ...
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Controllers for Peltier Modules ON OFF SHDN FREQ REF 1.5V REFERENCE MAXV MAX V = TEC MAXV MAXIP MAX TEC MAXIP (0.15V/R ) REF SENSE MAX ...
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Integrated Temperature Controllers for Peltier Modules Detailed Description The power stage of the MAX1978/MAX1979 thermoelectric cooler (TEC) temperature controllers consists of two switching buck regulators that operate together to directly control TEC current. This configura- tion creates a differential voltage ...
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Switching Frequency FREQ sets the switching frequency of the internal oscil- lator. The oscillator frequency is 500kHz when FREQ = GND. The oscillator frequency is 1MHz when FREQ = V . The 1MHz setting allows minimum inductor and fil- DD ...
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Integrated Temperature Controllers for Peltier Modules 10µF 0.01µF UNDERTEMP ALARM OVERTEMP ALARM DC CURRENT MONITOR 20kΩ 1% 80.6kΩ 1µF THERMISTOR VOLTAGE MONITOR REF 69.8kΩ 105kΩ Figure 2. MAX1979 Typical Application Circuit. MAXIN sets the maximum TEC current circuit ...
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REF 69.8kΩ 1% AIN+ AOUT 80.6kΩ 1% AIN- 20kΩ 1% MAX1978 BFB- MAX1979 x50 FB- V FB+ Figure 3. Thermistor Voltage Monitor Design Procedure Inductor Selection Small surface-mount inductors are ideal for use with the MAX1978/MAX1979. Select the output inductors ...
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Integrated Temperature Controllers for Peltier Modules The MAX1979 controls the TEC current in only one direction (unipolar). Set the maximum unipolar TEC cur- rent by applying a voltage to MAXIP. Connect MAXIN to MAXIP when using the MAX1979. The equation ...
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Drive SHDN low to place the MAX1978/MAX1979 in a power-saving shutdown mode. When the MAX1978/ MAX1979 are in shutdown, the TEC is off (V V decay to GND) and input supply current lowers to OS2 2mA (typ). ITEC is a ...
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Integrated Temperature Controllers for Peltier Modules where The gain needed to move the 0dB crossover point up to the desired frequency. In this case -4dB = 0. The desired crossover frequency, 1.5Hz in this ...
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INPUT 3V TO 5.5V ON OFF OVERTEMP ALARM UNDERTEMP ALARM TEMP MONITOR TEC CURRENT MONITOR VOLTAGE LIMIT HEATING CURRENT LIMIT COOLING CURRENT LIMIT Chip Information TRANSISTOR COUNT: 6023 PROCESS: BiCMOS ______________________________________________________________________________________ Integrated Temperature Controllers for Peltier Modules Typical Operating Circuit ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...