DN1220 データシートの表示（PDF） - Unspecified

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DN1220

SUBMINIATURE THERMOELECTRIC COOLER CONTROLLER

Unspecified 

DN1220

Setting Up The DN1220 TEC Controller

The maximum output current of the DN1220 is limited to 2 amperes by design. However, there are operating

conditions that will limit the maximum current to less than 2 amperes. The compliance voltage of the

DN1220, which is dependent on the power supply voltage, limits the maximum voltage that can be supplied to the

TEC. In addition, the resistance of the TEC can restrict the maximum current available. The current limiting

characteristics of the DN1220, as a function of supply voltage and TEC resistance, are shown in Figure 4.

Examples: The compliance voltage of the DN1220 is typically ±8 volts for a supply voltage of 12 volts. This is the

maximum voltage available to drive the TEC. If the TEC resistance is 5 ohms, the maximum TEC current will only be

1.6 amperes. Likewise, the compliance voltage is ±2 volts when the supply voltage is 5 volts and the TEC 's

resistance is 2 ohms. Therefore, the maximum current will be limited to 1 ampere in this case.

Maximum Output Voltage vs. TEC Resistance

(Typical Data)

12

11

10

9

8

7

2 Ampere

6

Current Limit

5

VS = 12V

VS = 9V

4

3

VS = 5V

2

1

0

0

1

2

3

4

5

6

TEC Resistance (Ω)

Figure 4

Mechanical Dimensions

1.000"

PIN 1

DN1220

ThermOptics

DN1220

TEC

CONTROLLER

XXXX

0.012

0.800 1.200

DN1220

Interconnect Board

1.200

PIN 1

PIN 14

0.700"

1.000"

0.100

0.063

0.200

MAX

Figure 5

Page 5

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