The TMP709 is a fully-integrated, resistor- programmable temperature switch with a temperature threshold that is set by just one external resistor within the entire operating range. The TMP709 provides an open-drain, active-low output and has a 2.7-V to 5.5-V supply-voltage range.
The temperature threshold accuracy is typically ±0.5°C, with a maximum of ±3°C (60°C to 100°C). The quiescent current consumption is typically 40 μA. Hysteresis is pin-selectable to 2°C or 10°C.
The TMP709 is available in a 5-pin, SOT-23 package.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TMP709 | SOT-23 (5) | 2.90 mm x 1.60 mm |
Changes from A Revision (February 2012) to B Revision
Changes from * Revision (December 2011) to A Revision
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
GND | 2 | Analog power | Device ground |
HYST | 4 | Digital input | Hysteresis selection. For 10°C, HYST = VCC; for 2°C, HYST = GND. |
OT | 3 | Digital output | Open-drain, active low output |
SET | 1 | Analog input | Temperature set point. Connect an external 1% resistor between SET and GND. |
VCC | 5 | Analog power | Power-supply voltage (2.7 V to 5.5 V) |