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MAX1978 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX1978
Description  Integrated Temperature Controllers for Peltier Modules
PDF  20 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1978 Datasheet(HTML) 3 Page - Maxim Integrated Products

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Integrated Temperature
Controllers for Peltier Modules
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(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
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VLX = 0, TA = +25
°C
0.02
10
PFET Leakage
ILEAK(P)
VLX = 0, TA = +85
°C1
µA
VDD = 5V
30
50
No-Load Supply Current
IDD(NO
LOAD)
VDD = 3.3V
15
30
mA
Shutdown Supply Current
IDD-SD
SHDN = GND, VDD = 5V (Note 3)
2
3
mA
Thermal Shutdown
TSHUTDOWN Hysteresis = 15
°C
165
°C
VDD rising
2.4
2.6
2.8
UVLO Threshold
VUVLO
VDD falling
2.25
2.5
2.75
V
FREQ = GND
450
500
650
Switching Frequency Internal
Oscillator
fSW-INT
FREQ=VDD
800
1000
1200
kHz
OS1, OS2, CS Input Current
IOS1, IOS2,
ICS
0 or VDD
-100
+100
µA
SHDN, FREQ Input Current
ISHDN,
IFREQ
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
VMAXV = VREF ✕ 0.67,
VOS1 to VOS2 = ±4V, VDD = 5V
-1
+1
MAXV Threshold Accuracy
VMAXV = VREF ✕ 0.33,
VOS1 to VOS2 = ±2V, VDD = 3V
-2
+2
%
MAXV, MAXIP, MAXIN
Input Bias Current
IMAXV-BIAS,
IMAXI_-BIAS
VMAXV = VMAXI_ = 0.1V or 1.5V
-0.1
+0.1
µA
CTLI Gain
ACTLI
VCTLI = 0.5V to 2.5V (Note 4)
9.5
10
10.5
V/V
CTLI Input Resistance
RCTLI
1M
Ω terminated at REF
0.5
1.0
2.0
M
Ω
Error Amp Transconductance
gm
50
100
175
µS
ITEC Accuracy
VOS1 to VCS = +100mV or -100mV
-10
+10
%
ITEC Load Regulation
∆VITEC
VOS1 to VCS = +100mV or -100mV,
IITEC = ±10µA
-0.1
+0.1
%
Instrumentation Amp Input Bias
Current
IDIF-BIAS
-10
0
+10
nA
Instrumentation Amp Offset
Voltage
VDIF-OS
VDD = 3V to 5.5V
-200
+20
+200
µV
Instrumentation Amp Offset-
Voltage Drift with Temperature
VDD = 3V to 5.5V
0.1
µV/°C
Instrumentation Amp Preset
Gain
ADIF
RLOAD = 10k
Ω to REF
45
50
55
V/V



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