BD4941G-TR Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are complex electronics that can be used to precisely manage and control the power requirements of consumer and industrial electronics. PMICs are used to convert, regulate and monitor direct current (DC) to alternating current (AC), as well as to provide low-voltage and high-voltage power supply control. A Supervisor IC, also known as system reset logic ICs, is a specific type of PMIC that monitors and supervises a circuit’s power supply. These ICs can help prevent system failures due to power-related anomalies. One example of a Supervisor IC is the BD4941G-TR.

The BD4941G-TR is a multiple reset monitoring unit that is designed to provide an in-time reset signal under over-voltage, over-current, missing voltage, and missing clock conditions. It includes five reset signals (ResetL1 to ResetL5) and can be used for a large variety of applications that require resetting. This IC is available in a small, surface-mount 6-pin UQFN package.

The main features of the BD4941G-TR include 1.5V to 5.5V supply voltage range, over-voltage protection of 6V, an adjustable reset frequency from 16ms to 192ms, internal sink current (I L ) of 10mA, low-voltage detection accuracy of 1.12V (±1.2V), and low-current consumption of 2.6μA. The operating temperature range is from -40°C to +85°C.

In addition, the BD4941G-TR provides two types of reset: active and passive. Active reset is triggered when a power supply output is detected and is controlled by an internal timer. Passive reset is triggered when a known voltage level and/or a known current level is detected, regardless of the power supply output. The use of both reset types ensures that the correct reset conditions are met in each situation.

The main application fields of the BD4941G-TR include portable electronic devices, such as cell phones and media players. These devices require an efficient power supply and require reset signals in order to ensure proper operation. The BD4941G-TR’s low-voltage detection accuracy and low-current consumption make it ideal for these types of applications. Additionally, the BD4941G-TR can be used in conjunction with power management ICs to create a complete power supply system for a variety of consumer applications.

The BD4941G-TR’s working principle is based on two steps: detecting a known voltage or current level, and triggering a reset signal if the level is detected. When the device is first activated, it monitors the supply voltage and current inputs to determine whether they are within the specified levels. If they are not, the device will trigger a reset signal. This signal will then reset the system in order to prevent system failure due to an over-voltage, over-current, missing voltage, or missing clock condition.

In conclusion, the BD4941G-TR is an efficient and reliable Supervisor IC. It is suitable for use in portable electronic devices, as well as in other consumer applications where a reliable power supply and reset signals are required. Its low-voltage detection accuracy and low-current consumption make it an ideal choice for these types of applications. Its working principle is based on detecting known voltage or current levels and triggering a reset signal if the levels are detected.

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