ADN8835ACPZ-R7

ADN8835 is a monolithic TEC controller with an integrated TEC controller. It has a linear power stage, a pulse-width modulation (PWM) power stage, and two zero-drift, rail-to-rail chopper amplifiers. The linear controller works with the PWM driver to control the internal power MOSFETs in an H bridge configuration. By measuring the thermal sensor feedback voltage and using the integrated operational amplifiers as a proportional integral differential (PID) compensator to condition the signal, this device 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. It supports negative temperature coefficient (NTC) thermistors as well as positive temperature coefficient (PTC) resistive temperature detectors (RTDs). It is used in application such as TEC temperature control, optical modules, optical fibre amplifiers, optical networking systems, instruments requiring TEC temperature control.

• High efficiency single inductor architecture, no external sense resistor required
• Integrated low RDSON MOSFETs for the TEC controller
• TEC voltage and current operation monitoring, temperature lock indicator
• Independent TEC heating and cooling current-limit settings
• External synchronization, two integrated, zero-drift, rail-to-rail chopper amplifiers
• Compatible with NTC or RTD thermal sensors, 2.50V reference output with 1% accuracy
• PWM driver switching frequency is 2MHz typ at (EN/SY high, VIN = 2.7V to 5.5V)
• Supply current is 3.3mA typ at (VIN = 2.7V to 5.5V)
• Shutdown current is 350µA typ at (VIN = 2.7V to 5.5V)
• Operating temperature is -40°C to +125°C, package style is 36-lead LFCSP

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