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PMIC - Supervisors | BU4925F-TR

Power management integrated circuits (PMICs), such as the BU4925F-TR, are integrated circuits that combine multiple power management, power sequencing, and power control functions. In the case of the BU4925F-TR, this powerful Supervisory Circuits is the perfect solution for ultra-low power system-level applications and is highly optimized for wearing device market requirements.

BU4925F-TR Application Field

The BU4925F-TR is a Stand-Alone Supervisory Circuit in System Reset, and Power Supply Voltage Supervision. This includes, but is not limited to, Wristwatch, Wearable, Portable Medical, and Industrial Applications.

In particular, the BU4925F-TR can be used as a system reset IC for wearables such as smartwatches and activity trackers. As wearables are energy efficient devices and when used on a regular basis, power consumption needs to be optimized. Additionally, the BU4925F-TR can provide system reset function over a wide supply voltage range of 2.3V to 5.5V. Moreover, the BU4925F-TR Stand-Alone Supervisory Circuit also provides precise voltage monitoring and an accurate reset delay time.}

BU4925F-TR Working Principle

The BU4925F-TR is designed to sense an input voltage, VIN, and take corrective action when it fails to meet the low voltage reset (LVR) threshold or goes above the upper voltage reset (UVR) threshold. It then outputs a logic-level signal to the system when the VIN is below the LVR level or above the UVR level.

The BU4925F-TR has two separate input voltage detection. It has a Low Voltage Reset (LVR) threshold and an Upper Voltage Reset (UVR) threshold. When the input voltage, VIN, drops below the LVR threshold or rises above the UVR threshold, the BU4925F-TR will output a logic-level signal to the system. This signal, along with a delay time, can be used to reset the system.

The BU4925F-TR has two types of delay functions: delay-OFF, and delay-ON. When the input voltage, VIN, rises above the LVR threshold, the BU4925F-TR will delay for a set period of time before outputting a logic-level signal. Likewise, when the input voltage drops below the UVR threshold, the BU4925F-TR will delay for a set period before outputting a logic-level signal. This allows the user to customize the operating parameters and reset timing of the system.

The BU4925F-TR also includes an adjustable reset width. This feature allows the reset signal to stay high or low for a customizable time period. This adjustable reset width feature makes the BU4925F-TR an ideal solution for applications that require a longer reset signal.

In summary, the BU4925F-TR is a high-performance, low-voltage supervisor IC that provides system reset, precise voltage monitoring, and an adjustable reset width or delay times. The BU4925F-TR is the perfect solution for any system requiring precise voltage monitoring.

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