FEATURES

 Compact Size: 0.55×0.55×0.09

(14.0mm×14.0mm×2.2mm)

 Low Profile: 0.09 (2.2mm)

 High Reliability: fully molded

 Surface Mount

 Bottom Thermal Pad: allows high power heat sinking

 Efficiency: 90

 Maximum Output Current: 3.5A

 Maximum Output Voltage: ±VVPS

 Actual Object Temperature Monitoring

 High Temperature Stability: 0.001°C

 Low Cost

 100 Lead (Pb)-free and RoHS Compliant

DESCRIPTION

The TEC14M5V3R5AS is an ultra compact, low profile, and

fully molded TEC controller designed for driving TECs

(Thermo-Electric Coolers) with high electrical and

mechanical reliability that can achieve high temperature

stability for regulating the object temperature. Figure 1 shows

its photos of TEC14M5V3R5AS.

The module provides interface ports for setting the main target

object set-point temperature range, i.e. set-point temperature

range; maximum voltage across TEC, i.e. maximum TEC

voltage; and the compensation network. The compensation

network compensates the high order thermal load and thus

stabilizes the temperature control loop.

It provides these functions: thermistor T-R curve linearization,

temperature measurement and monitoring, temperature

control loop status indication, TEC voltage monitoring, power

up delay, and shut down.

The TEC14M5V3R5AS comes with a high stability low noise

2.5V voltage reference which can be used for setting the

desired object temperature by using a POT (Potentiometer) or

a DAC (Digital to Analog Converter). When using this

reference for setting the set-point temperature, the set-point

temperature error is independent of this reference voltage.

This is because the internal temperature measurement network

also uses this voltage as the reference, the errors in setting the

temperature and measuring the temperature cancel with each

other, setting the object temperature with higher stability. This

reference can also be utilized by an ADC (Ancalog to Digital

Converter), for the same reason, the measurement error will

calso be independent of the reference voltage, resulting in a

more accurate measurement.