ON Semiconductor ASM811LEUSF-T Voltage Supervisor IC

The ON Semiconductor ASM811LEUSF-T is a high-quality voltage supervisor IC designed to provide reliable monitoring of power supplies in electronic equipment. This microprocessor supervisory circuit holds a microprocessor in the reset state until the system voltage has stabilized at the correct operating level and remains operational with a supply voltage as low as 1.2V. It is an essential component for any design requiring precision voltage monitoring to ensure the proper function and stability of the system.

With a threshold voltage of typically 4.63V, the ASM811LEUSF-T is particularly well-suited for 5V-powered systems. Its accuracy is impressive, with a ±1.5% threshold voltage accuracy at room temperature and ±2.5% over the full temperature range, which ensures that the device operates reliably under varying conditions.

The ASM811LEUSF-T comes in a compact SOT-23 package, which is ideal for space-constrained applications. The small footprint of the package allows for efficient use of PCB space, making it a perfect fit for portable devices, as well as industrial and automotive applications where size and reliability are critical.

This voltage supervisor IC features a low supply current of just 17μA, making it an energy-efficient choice for battery-powered devices. Its low power consumption helps to extend battery life and reduce overall energy costs. Additionally, the ASM811LEUSF-T has an active-low RESET output, which remains asserted until VCC reaches the reset voltage threshold and after the reset timeout period has elapsed, ensuring a proper system reset.

The device also includes an additional feature: a manual reset input. This allows the system to be reset by external hardware or software control, providing designers with greater flexibility in managing system resets. The manual reset is debounced and can assert a reset signal for a minimum of 140ms, which is a standard feature to prevent false triggering due to noise or brief contact interruptions.

In summary, the ON Semiconductor ASM811LEUSF-T is a robust and reliable voltage supervisor IC that offers precise voltage monitoring, low power consumption, and a compact form factor. It is an excellent choice for designers looking to enhance system reliability and performance in a wide range of applications.