The ADT6501/ADT6502/ADT6503/ADT6504 are trip point temperature switches available in a 5-lead SOT-23 package. Each part contains an internal band gap temperature sensor for local temperature sensing. When the temperature crosses the trip point setting, the logic output is activated. The ADT6501/ ADT6503 logic output is active low and open-drain. The ADT6502/ADT6504 logic output is active high and push-pull. The temperature is digitized to a resolution of 0.125°C (11-bit). The factory trip point settings are 10°C apart starting from −45°C to +15°C for the cold threshold models and from +35°C to +115°C for the hot threshold models.
These devices require no external components and typically consume 30 μA supply current. Hysteresis is pin-selectable at 2°C and 10°C. The temperature switch is specified to operate over the supply range of 2.7 V to 5.5 V.
The ADT6501SRJZP075RL7 and ADT6502 are used for monitoring temperatures from +35°C to +115°C only. Therefore, the logic output pin becomes active when the temperature goes higher than the selected trip point temperature.
The ADT6503 and ADT6504 are used for monitoring temperatures from −45°C to +15°C only. Therefore, the logic output pin becomes active when the temperature goes lower than the selected trip point temperature.
Product Highlights
Feature
- ±0.5°C (typical) threshold accuracy
- Factory-set trip points from
- −45°C to +15°C in 10°C increments
- +35°C to +115°C in 10°C increments
- No external components required
- Maximum temperature of 125°C
- Open-drain output (ADT6501/ADT6503)
- Push-pull output (ADT6502/ADT6504)
- Pin-selectable hysteresis of 2°C and 10°C
- Supply current of 30 μA (typical)
- Space-saving, 5-lead SOT-23 package
Applications
- Medical equipment
- Automotive
- Cell phones
- Hard disk drives
- Personal computers
- Electronic test equipment
- Domestic appliances
- Process controls
(Picture: Pinout)
