Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | Thermoelectric cooler controller |
| Power stage | External MOSFET H-bridge |
| PWM frequency | Configurable up to 1 MHz |
| Temperature sensor support | NTC thermistor or PTC RTD |
| TEC limits | Programmable voltage/current and heating/cooling current limits |
| Supply | 5 V typical, optional 3 V operation |
| Package | 32-lead 5 × 5 mm LFCSP with exposed pad |
| Product status | Production |
Product Overview
The ADN8831ACPZ-REEL7 is the tape-and-reel LFCSP version of Analog Devices’ monolithic thermoelectric-cooler controller. It combines zero-drift analog control amplifiers, temperature-loop functions and a PWM driver, while the high-current TEC H-bridge is implemented with external MOSFETs selected for the required load.
This architecture is useful when the designer needs more freedom in TEC current, voltage and thermal design than an integrated 1 A driver allows. The ADN8831 supports both NTC thermistors and PTC RTDs, programmable heating/cooling current limits, TEC voltage/current monitoring and switching frequencies up to 1 MHz.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Control type | Closed-loop TEC temperature controller |
| External power stage | MOSFET H-bridge |
| PWM frequency | Up to 1 MHz |
| Efficiency headline | >90% |
| Temperature sensors | NTC thermistors, PTC RTDs |
| TEC voltage monitoring | Supported |
| TEC current monitoring | Supported |
| Heating/cooling current limits | Independently programmable |
| Reference output | 2.5 V typical |
| Supply options | 5 V typical, optional 3 V |
| Package | 32-lead LFCSP, 5 × 5 mm with exposed pad |
| Exact order form | Reel7 |
| Product status | Production |
Design Considerations
The external MOSFET architecture gives flexibility, but the power-stage design becomes part of the TEC loop. MOSFET RDS(on), switching loss, dead time and PCB thermal design all affect achievable TEC current and efficiency.
Loop compensation also matters because the thermal plant is slow while the electrical power stage is fast. Use the thermistor/RTD transfer function and the TEC/load thermal response when setting PID compensation rather than copying a generic component network.
Related Engineering Resources
- ADN8831 Thermoelectric Cooler Controller Data Sheet
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
