MAX1968(2002) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1968 Datasheet PDF : 16 Pages
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Power Drivers for Peltier TEC Modules
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
SHDN, MAXV, MAXIP, MAXIN, CTLI,
FREQ to GND .......................................................-0.3V to +6V
COMP, OS1, OS2, CS, REF,
ITEC to GND ...........................................-0.3V to (VDD + 0.3V)
PVDD1, PVDD2 to GND ...............................-0.3V to (VDD + 0.3V)
PVDD1, PVDD2 to VDD ..................................................-0.3V to +0.3V
PGND1, PGND2 to GND .......................................-0.3V to +0.3V
COMP, REF, ITEC Short to GND ...................................Indefinite
Peak LX Current (MAX1968) (Note 1).................................±4.5A
Peak LX Current (MAX1969) (Note 1)....................................+9A
Continuous Power Dissipation (TA = +70°C)
28-Pin TSSOP-EP (derate 23.8mW/°C above +70°C).....1.9W
Operating Temperature Range ...........................-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 take care not to
exceed the IC’s package power dissipation limits.
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, PGND1 = PGND2 = FREQ = GND, CTLI = MAXV = MAXIP = MAXIN = REF, CREF = 1µF,
CCOMP = 0.1µF, LLX_ = 3.3µH, CCS = COS2 = 1µF, ITEC < 3ARMS (MAX1968), ITEC < 6ARMS (MAX1969), TA = 0°C to +85°C, unless
otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Input Supply Range
Output Voltage Range
Maximum TEC
Current
Reference Voltage
Reference Load
Regulation
Current-Sense
Threshold Accuracy
Switch-Fault Reset
Voltage
NFET On-Resistance
PFET On-Resistance
NFET Leakage
SYMBOL
VDD
VOUT
ITEC(MAX)
VREF
∆VREF
RDS(ON-N)
RDS(ON-P)
ILEAK(N)
CONDITIONS
VDD = 5V, ITEC = 0 to ±3A,
VOUT = VOS1 - VOS2 (MAX1968)
VDD = 5V, ITEC = 0 to 6A,
VOUT = VOS1 (MAX1969)
VDD = 3V, ITEC = 0 to ±3A,
VOUT = VOS1 - VOS2 (MAX1968)
VDD = 3V, ITEC = 0 to 6A,
VOUT = VOS1 (MAX1969)
MAX1968
MAX1969
VDD = 3V to 5.5V, IREF = 150µA
VDD = 3V to 5.5V, IREF = +10µA to -1mA
VOS1 < VCS
VOS1 > VCS
VMAXI_ = VREF
VMAXI_ = VREF/3
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
MIN
3.0
-4.3
-2.3
1.485
140
40
140
40
50
TYP
1.500
1.2
150
50
150
50
150
0.04
0.06
0.06
0.09
0.02
1
MAX
5.5
+4.3
4.3
+2.3
2.3
±3
6
1.515
5
160
60
160
60
250
0.07
0.08
0.10
0.12
10
UNITS
V
V
A
V
mV
mV
mV
Ω
Ω
µA
2 _______________________________________________________________________________________
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