DS1231-35/G

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PMIC (Power Management Integrated Circuit) Supervisors are integrated circuits (ICs) that monitor multiple power rails, protect against power faults, and provide accurate system reset functionality. The DS1231-35/G is a high-performance supervisor IC that is used to protect highly sensitive circuits from external and internal power faults. This article will discuss the application field and working principle of the DS1231-35/G.

The DS1231-35/G is designed for primary multiple power rail applications such as point-of-load (POL) DC-to-DC converters, on-board power management ICs, or in low-voltage applications. It features an integrated reset time delay and adjustable reset threshold voltage monitor. The DS1231-35/G supervisor can also be used to activate external circuits, trigger audible alarms, and reset AC/DC power systems.

The DS1231-35/G features a programmable reset time delay and adjustable reset threshold feature, which allows users to control the start-up of the monitored power rail. It can be programmed over a voltage range of 1.3V to 6V and has a processing speed of up to 12 MHz. The supervisor has a small footprint (1.2mm x 0.8mm) and is designed to work in wide temperature range from -40°C to 85°C.

The working principle of the DS1231-35/G supervisor is that it monitors multiple power rails and activates a reset signal if it detects a power fault. Its integrated reset time delay feature allows the user to program a delay before the reset signal is sent. This prevents sudden power loss or undesired circuit behavior when the power lies within the reset threshold. It also features an adjustable reset threshold voltage monitor, which allows the user to set the desired threshold voltage for the monitored voltage rail.

The DS1231-35/G also features a Fast slew-rate control/delay compensation circuit, which helps to minimize glitches on the reset signal. This helps to prevent the reset signal from tripping at undesired times, due to spikes in the monitored voltage rails. The device also has a noise filter circuit, which helps to reduce noise on the reset signal. This helps to ensure that the reset signal is free from any electrical interference or noise.

In summary, the DS1231-35/G is a high-performance supervisor IC that is used to protect highly sensitive circuits from external and internal power faults. It features a programmable reset time delay and adjustable reset threshold, which allows the user to control the start-up of the monitored power rail. It also features a Fast slew-rate control/delay compensation circuit and a noise filter circuit, which helps to reduce noise and minimize glitches on the reset signal. Therefore, the DS1231-35/G supervisor is suitable for primary multiple power rail applications such as point-of-load (POL) DC-to-DC converters, on-board power management ICs, or in low-voltage applications.

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