MAX1978ETM+ Maxim Integrated Products, MAX1978ETM+ Datasheet - Page 2

• Manufacturer Part Number: MAX1978ETM+
• Description: IC CNTRLR INT TEMP 48TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1978ETM+

• Applications: Thermoelectric Cooler
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFN Exposed Pad
• Output Voltage Range: - 4.3 V to + 4.3 V
• Output Current: 6 A
• Input Voltage Range: 3 V to 5.5 V
• Input Current: 30 mA
• Power Dissipation: 2105 mW
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Ic Output Type: Current
• Sensing Accuracy Range: ± 1%
• Supply Current: 30mA
• Supply Voltage Range: 3V To 5.5V
• Sensor Case Style: QFN
• No. Of Pins: 48
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Temperature Sensing Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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
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
Note 1: LX has internal clamp diodes to PGND and PV
Note 2: Solder underside metal slug to PCB ground plane.
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 = V
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
OS1
OS1
OS1
OS1
CS
CS
= 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
160
160
= 0°C to +85°C,
5.5
4.3
2.3
±3
60
60
10
6
5
UNITS
mV
mV
µA
Ω
Ω
V
V
A
V