MAX1968EUI+ Maxim Integrated Products, MAX1968EUI+ Datasheet - Page 13

• Manufacturer Part Number: MAX1968EUI+
• Description: IC DRVR POWER 28-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1968EUI+

• Applications: Thermoelectric Cooler
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• Output Voltage Range: - 4.3 V to + 4.3 V
• Output Current: 3 A
• Input Voltage Range: 3 V to 5.5 V
• Input Current: 30 mA
• Power Dissipation: 1.9 W
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 1. Typical Application Circuit for MAX1968. Circuit is configured for both cooling and heating with an NTC thermistor. Current
flowing from OS2 to OS1 is cooling.
50kΩ
______________________________________________________________________________________
3V TO
5.5V
Power Drivers for Peltier TEC Modules
100kΩ
100kΩ
100kΩ
1μF
1μF
1μF
1μF
*SEE FIGURE 2
FOR TEMPERATURE
SET POINT SET BY A DAC
MAX4475
10μF
0.1μF
V
FREQ
PV
PGND1
PV
PGND2
REF
MAXIP
MAXIN
MAXV
DD
DD
DD
1
2
U2
CTLI
MAX1968
0.022μF
240kΩ
V
DD
TEMPERATURE
SET POINT*
GND
COMP
SHDN
ITEC
OS1
OS2
LX1
LX2
510kΩ
CS
1μF
10μF
10kΩ
3.3μH
3.3μH
10kΩ
ON
0.01μF
TO REF
50mΩ
OFF
1μF
0.1μF
R
THERM
U3B
1μF
100kΩ
MAX4477
V
U3A
DD
10kΩ
TO REF
NTC
THERMISTOR
MAX4477
10kΩ
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