ADN8833ACBZ-R7

热电冷却器

Product Details

The ADN8833 is a monolithic H-bridge TEC driver with integrat-ed 1 A power MOSFETs. It has a linear power stage with the linear driver LDR output and a pulse-width modulation PWM power stage with the SW output. Depending on the control voltage at the CONT input, the ADN8833 drives current through a TEC to settle the temperature of a laser diode or a passive component attached to the TEC module to the programmed target temperature.

The control voltage applied to the CONT input is generated by a digital-to-analog converter DAC closing the digital proportional, integral, derivative PID loop of temperature control system.

The internal 2.5 V reference voltage provides a 1% accurate output that is used to bias a voltage divider network to program the maximum TEC current and voltage limits for both the heating and cooling modes. It can also be a reference voltage for the DAC and the temperature sensing circuit, including a thermistor bridge and an analog-to-digital converter ADC.

**Applications**

.

TEC temperature control

.

Optical modules

.

Optical fiber amplifiers

.

Optical networking systems

.

Instruments requiring TEC temperature control

### Features and Benefits

.

Patented high efficiency single inductor architecture

.

Integrated low RDSON MOSFETs for TEC driver

.

TEC voltage and current operation monitoring

.

No external sense resistor required

.

Independent TEC heating and cooling current limit settings

.

Programmable maximum TEC voltage

.

2 MHz PWM switching frequency

.

External synchronization 

.

Digital thermal control loop compatible

.

2.50 V reference output with 1% accuracy

.

Available in a 25-ball, 2.5 mm x 2.5 mm WLCSP or in a 24-lead, 4 mm x 4 mm LFCSP