MAX1978 Maxim, MAX1978 Datasheet - Page 2

• Manufacturer Part Number: MAX1978
• Description: Integrated Temperature Controllers for Peltier Modules
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
V
SHDN, MAXV, MAXIP, MAXIN,
FREQ, COMP, OS1, OS2, CS, REF, ITEC, AIN+, AIN-,
PV
PV
PGND1, PGND2 to GND .......................................-0.3V to +0.3V
COMP, REF, ITEC, OT, UT, INTOUT, DIFOUT,
Integrated Temperature
Controllers for Peltier Modules
Note 1: LX has internal clamp diodes to PGND and PV
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
(V
unless otherwise noted. Typical values at T
2
Input Supply Range
Output Voltage Range
Maximum TEC Current
Reference Voltage
Reference Load Regulation
Current-Sense Threshold
NFET On-Resistance
PFET On-Resistance
NFET Leakage
DD
DD
CTLI, OT, UT to GND............................................-0.3V to +6V
AOUT, INT-, INTOUT, BFB+, BFB-, FB+, FB-,
DIFOUT to GND......................................-0.3V to (V
BFB-, BFB+, AOUT Short to GND .............................Indefinite
DD
DD
_______________________________________________________________________________________
to GND ..............................................................-0.3V to +6V
1, PV
1, PV
= PV
package power dissipation limits.
DD
DD
DD
PARAMETER
2 to V
2 to GND...............................-0.3V to (V
1 = PV
DD
DD
...........................................-0.3V to +0.3V
2 = SHDN = 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, T
R
R
SYMBOL
I
TEC(MAX)
I
DS(ON-N)
DS(ON-P)
LEAK(N)
∆V
V
V
V
OUT
REF
DD
REF
A
= +25°C.)
V
V
V
V
V
V
V
V
MAX1978
MAX1979
V
V
V
V
V
V
V
V
V
V
DD
OUT
DD
OUT
DD
OUT
DD
OUT
DD
DD
OS1
OS1
DD
DD
DD
DD
LX
LX
DD
DD
= V
= V
= 5V, I
= 5V, I
= 3V, I
= 3V, I
= 3V to 5.5V, I
= 3V to 5.5V, I
= 5V, I = 0.5A
= 3V, I = 0.5A
= 5V, I = 0.5A
= 3V, I = 0.5A
DD
< V
> V
= V
= V
= V
= V
+ 0.3V)
+ 0.3V)
DD
DD
. Applications that forward bias these diodes should not exceed the IC’s
CS
CS
OS1
OS1
OS1
OS1
= 5V, T
= 5V, T
TEC
TEC
TEC
TEC
- V
(MAX1979)
- V
(MAX1979)
CONDITIONS
= 0 to ±3A,
= 0 to 6A,
= 0 to ±3A,
= 0 to 6A,
OS2
OS2
A
A
REF
REF
Peak LX Current (MAX1978) (Note 1).................................±4.5A
Peak LX Current (MAX1979) (Note 1)....................................+9A
Continuous Power Dissipation (T
Operating Temperature Ranges
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
= +25°C
= +85°C
(MAX1978)
(MAX1978)
48-Lead Thin QFN-EP
(derate 26.3mW/°C above +70°C) (Note 2) .................2.105W
MAX1978ETM ..................................................-40°C to +85°C
MAX1979ETM ..................................................-40°C to +85°C
= 150µA
= +10µA to -1mA
V
V
V
V
MAXI_
MAXI_
MAXI_
MAXI_
= V
= V
= V
= V
REF
REF
REF
REF
/3
/3
1.485
MIN
-4.3
-2.3
135
135
3.0
40
40
A
= +70°C)
1.500
TYP
0.04
0.06
0.06
0.09
0.02
150
150
1.2
50
50
1
A
1.515
MAX
+4.3
+2.3
0.07
0.08
0.10
0.12
= 0°C to +85°C,
160
160
5.5
4.3
2.3
±3
60
60
10
6
5
UNITS
mV
mV
µA
Ω
Ω
V
V
A
V