TPS3306-18QDRQ1

TPS3306-18QDRQ1 is TI’s low-power voltage supervisor designed for 1.8-V systems. It monitors a single 1.8-V VDD rail and provides a deterministic reset signal to a microcontroller or other logic. On power-up, when VDD reaches the reset threshold and is stable, the RESET# output de-asserts; if VDD collapses or becomes unstable, RESET# is asserted to force a safe reset. It also offers an optional manual reset input to force a reset externally. The device draws only microamps in operation and includes a defined reset timeout for a clean start. Package: 8-pin QFN (code -QDRQ1). Typical applications include 1.8-V MCU power rails, portable devices, wearables, IoT sensors, and any system requiring reliable brown-out protection. For exact thresholds, timing, and pin configuration, consult the TPS3306 data sheet.

Here are the typical features of the TPS3306-18QDRQ1:
- Fixed 1.8 V reset threshold (TPS3306-18)
- Ultra-low quiescent current (very low power in normal operation)
- Power-on reset (POR) to guarantee proper MCU startup
- Manual reset input for external reset control
- Push-pull, active-low reset output
- Wide supply range (1.8 V to about 5.5 V)
- Temperature range suitable for industrial/applications (typical -40°C to 125°C)
- Small 6-pin QFN/VSON package (QDRQ1), RoHS-compliant
For exact electrical specs and package details, please refer to the TI datasheet.

- Pin count: 8 pins (QFN package, -QDRQ1 variant)
- Function: 1.8 V rail voltage supervisor. It monitors the 1.8 V supply and provides a reset output to a microcontroller (power-on reset) with an option for a manual reset input. In short, it acts as a reset/power-fail detector for the 1.8 V rail.

- Manufacturer: Texas Instruments Incorporated (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits (ICs).

TPS3306-18QDRQ1 is a 1.8 V rail voltage supervisor/reset IC. Typical application areas include:
- Microcontroller/processor reset supervision on 1.8 V rails
- Power-on reset and brown-out protection for battery-powered, ultra-low-power devices
- IoT sensors, wearables, and edge devices requiring reliable resets
- Multi-rail systems where the 1.8 V domain must start from a known state
- Automotive and industrial electronics needing robust reset signaling
- Any low-power embedded designs requiring minimal quiescent current and fast recovery

TPS3306-18QDRQ1 is in an 8-pin VQFN package (VQFN-8, approx. 3×3 mm) with an exposed pad.