AD22105ARZ-REEL

AD22105ARZ-REEL is a low-voltage, resistor-programmable, thermostatic switch. Using a novel circuit architecture, the AD22105 asserts an open-collector output when the ambient temperature exceeds the user-programmed setpoint temperature. It has approximately 4°C of hysteresis, which prevents rapid thermal on-and-off cycling. It operates on a single power supply voltage from 2.7V to 7V, facilitating operation in battery-powered applications as well as in industrial control systems. Because of low power dissipation (230µW at 3.3V), self-heating errors are minimized, and battery life is maximized. It is used in applications such as industrial process control, thermal control systems, CPU monitoring, computer thermal management circuits, fan control, and handheld/portable electronic equipment.

• Ambient setpoint accuracy is ±0.5°C typical at ((VS) = 3.3 V, TA = 25°C)
• Temperature setpoint accuracy is ±3.0°C maximum at ((VS) = 3.3 V, TA = 25°C)
• Power supply rejection ratio is ±0.05°C/V typical at ((VS) = 3.3 V, TA = 25°C)
• Output low voltage is 250mV typical at ((VS) = 3.3 V, TA = 25°C)
• Supply voltage range from 2.7V to 7V
• Supply current (output low) is 120µA maximum at ((VS) = 3.3 V, TA = 25°C)
• Internal pull-up resistor is 200Kohm typical at ((VS) = 3.3 V, TA = 25°C)
• Turn-on settling time is 5µs typical at ((VS) = 3.3 V, TA = 25°C)
• Operating temperature range from -40°C to +150°C
• 8-lead SOIC-N package

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