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MAX1978-MAX1979 Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX1978-MAX1979 Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 20 page Integrated Temperature Controllers for Peltier Modules _______________________________________________________________________________________ 5 ELECTRICAL CHARACTERISTICS (VDD = PVDD1 = PVDD2 = SHDN = 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, TA = -40°C to +85°C, unless otherwise noted.) (Note 5) PARAMETER SYMBOL CONDITIONS MIN MAX UNITS Input Supply Range VDD 3 5.5 V VDD = 5V, ITEC = 0 to ±3A, VOUT = VOS1 -VOS2 (MAX1978) -4.3 +4.3 VDD = 5V, ITEC = 0 to 6A, VOUT = VOS1 (MAX1979) 4.3 VDD = 3V, ITEC = 0 to ±3A, VOUT = VOS1 - VOS2 (MAX1978) -2.3 +2.3 Output Voltage Range VOUT VDD = 3V, ITEC = 0 to 6A, VOUT = VOS1 (MAX1979) 2.3 V MAX1978 ±3 Maximum TEC Current ITEC(MAX) MAX1979 6 A Reference Voltage VREF VDD = 3V to 5.5V, IREF = 150µA 1.475 1.515 V Reference Load Regulation ∆VREF VDD = 3V to 5.5V, IREF = 10µA to -1mA 5mV VMAXI_ = VREF 135 160 VOS1 < VCS VMAXI_ = VREF/3 40 60 VMAXI_ = VREF 135 160 Current-Sense Threshold VOS1 > VCS VMAXI_ = VREF/3 40 60 mV VDD = 5V 50 No-Load Supply Current IDD(NO LOAD) VDD = 3.3V 30 mA Shutdown Supply Current IDD-SD SHDN = GND, VDD = 5V (Note 3) 3 mA VDD rising 2.4 2.8 UVLO Threshold VUVLO VDD falling 2.25 2.75 V FREQ = GND 450 650 Switching Frequency Internal Oscillator fSW-INT FREQ = VDD 800 1200 kHz OS1, OS2, CS Input Current IOS1, IOS2, ICS 0 or VDD -100 +100 µA SHDN, FREQ Input Current I SHDN, I FREQ 0 or VDD -5 +5 µA SHDN, FREQ Input Low Voltage VIL VDD = 3V to 5.5V 0.25 ✕ VDD V SHDN, FREQ Input High Voltage VIH VDD = 3V to 5.5V 0.75 ✕ VDD V |
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