SBOSA45C february 2022 – may 2023 TMP1826
PRODUCTION DATA
The TMP1826 operates with a power supply in the range of 1.7 V to 5.5 V in both VDD powered and bus powered modes. When operating in VDD powered mode, a power-supply bypass capacitor is required for precision and stability. Place this power-supply bypass capacitor as close to the supply and ground pins of the device as possible. A typical value for this supply bypass capacitor is 0.1 µF. Applications with noisy or high-impedance power supplies can require a bigger bypass capacitor to reject power-supply noise.
In bus powered mode, the VDD pin must be connected to ground. The internal capacitor in the device is sufficient to provide power during bus communication. The internal capacitor is recharged through the external pullup resistor during the recovery period. In cases, where there is a long bus length or at higher temperatures, it may be necessary for the host to provide additional time for bus recovery or to use the overdrive speed in which the part uses the internal capacitor charge less.
When using IO pins to control external circuits, take care that currents to these pins do not heat the part and offset temperature measurements.