MAX1978 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1978 Datasheet PDF : 20 Pages
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Integrated Temperature
Controllers for Peltier Modules
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
SHDN, MAXV, MAXIP, MAXIN,
CTLI, OT, UT to GND............................................-0.3V to +6V
FREQ, COMP, OS1, OS2, CS, REF, ITEC, AIN+, AIN-,
AOUT, INT-, INTOUT, BFB+, BFB-, FB+, FB-,
DIFOUT to GND......................................-0.3V to (VDD + 0.3V)
PVDD1, PVDD2 to VDD ...........................................-0.3V to +0.3V
PVDD1, PVDD2 to GND...............................-0.3V to (VDD + 0.3V)
PGND1, PGND2 to GND .......................................-0.3V to +0.3V
COMP, REF, ITEC, OT, UT, INTOUT, DIFOUT,
BFB-, BFB+, AOUT Short to GND .............................Indefinite
Peak LX Current (MAX1978) (Note 1).................................±4.5A
Peak LX Current (MAX1979) (Note 1)....................................+9A
Continuous Power Dissipation (TA = +70°C)
48-Lead Thin QFN-EP
(derate 26.3mW/°C above +70°C) (Note 2) .................2.105W
Operating Temperature Ranges
MAX1978ETM ..................................................-40°C to +85°C
MAX1979ETM ..................................................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: LX has internal clamp diodes to PGND and PVDD. Applications that forward bias these diodes should not exceed the IC’s
package power dissipation limits.
Note 2: Solder underside metal slug to PC board ground plane.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = PVDD1 = PVDD2 = SHDN = 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, TA = 0°C to +85°C,
unless otherwise noted. Typical values at TA = +25°C.)
PARAMETER
Input Supply Range
SYMBOL
VDD
CONDITIONS
VDD = 5V, ITEC = 0 to ±3A,
VOUT = VOS1 - VOS2 (MAX1978)
MIN TYP MAX UNITS
3.0
5.5
V
-4.3
+4.3
Output Voltage Range
VOUT
VDD = 5V, ITEC = 0 to 6A,
VOUT = VOS1 (MAX1979)
VDD = 3V, ITEC = 0 to ±3A,
VOUT = VOS1 - VOS2 (MAX1978)
4.3
V
-2.3
+2.3
Maximum TEC Current
Reference Voltage
Reference Load Regulation
Current-Sense Threshold
NFET On-Resistance
PFET On-Resistance
NFET Leakage
ITEC(MAX)
VREF
∆VREF
RDS(ON-N)
RDS(ON-P)
ILEAK(N)
VDD = 3V, ITEC = 0 to 6A,
VOUT = VOS1 (MAX1979)
MAX1978
MAX1979
VDD = 3V to 5.5V, IREF = 150µA
VDD = 3V to 5.5V, IREF = +10µA to -1mA
VOS1 < VCS
VMAXI_ = VREF
VMAXI_ = VREF/3
VOS1 > VCS
VMAXI_ = VREF
VMAXI_ = VREF/3
VDD = 5V, I = 0.5A
VDD = 3V, I = 0.5A
VDD = 5V, I = 0.5A
VDD = 3V, I = 0.5A
VLX = VDD = 5V, TA = +25°C
VLX = VDD = 5V, TA = +85°C
2.3
±3
A
6
1.485 1.500 1.515
V
1.2
5
mV
135 150 160
40
50
60
mV
135 150 160
40
50
60
0.04 0.07
Ω
0.06 0.08
0.06 0.10
Ω
0.09 0.12
0.02
10
µA
1
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