BH21M0AWHFV-TR Integrated Circuits (ICs)

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Introduction to BH21MWAWFV-TR

The BH21MWAWFV-TR from Diodes Incorporated is a low dropout (LDO) linear voltage regulator for portable and embedded applications, such as mobile phones, notebook PCs, communications systems, and industrial equipment.

This LDO is designed to provide stable output voltage and current with low dropout voltage and low quiescent current. It consists of an internally compensated P-channel MOSFET, a protected current source, and other necessary components. The device is designed to provide a regulated output voltage between 1.3 V and 5.5 V.

Application Field and Working Principle of BH21MWAWFV-TR

The BH 21MWAWFV-TR can be used in a wide range of applications that require a low dropout and low quiescent current linear voltage regulator. It can be used in handheld devices such as mobile phones and games consoles, computer peripherals, network devices and other portable applications. It can also be used in a variety of embedded applications, such as medical instrumentation, automotive modules, point-of-sale equipment, and energy meters.

The BH21MWAWFV-TR operates according to the basic principle of an LDO voltage regulator. The regulator consists of an input voltage source, a series pass element, an error amplifier, and an external pass element. When the input voltage is the same as the regulated output voltage, the error amplifier keeps the pass transistor at its maximum current, and the regulator is in equilibrium. When the input voltage changes, the error amplifier modulates the current level of the pass element to keep the regulated voltage constant.

The BH21MWAWFV-TR employs a topology commonly known as “Series-Source” to regulate the output voltage. This topology is composed of an internally compensated series pass element (a P-channel MOSFET), a protected current source, an error amplifier, and other necessary components. The core devices in this series-source topology are the P-channel MOSFET and the protected current source, which are closely integrated to optimize performance.

The BH21MWAWFV-TR is designed to provide a regulated output voltage between 1.3 V and 5.5 V. The device has an ultra low dropout voltage of only 80mV at 1 A. This allows the regulator to maintain a constant output voltage even when the input voltage is only marginally higher than the target output voltage. Additionally, the device has an operating current range from 0.4 mA to 5 mA, with a quiescent current of only 0.4 mA.

The BH21MWAWFV-TR is capable of delivering up to 1 A of output current over a wide range of input voltages . The device has a thermal shutdown circuit that will shut down the regulator if the junction temperature exceeds 150°C, and a short-circuit protection circuit that shuts down the output when an overload or a short-circuit is detected on the output side.

The BH21MWAWFV-TR is designed to provide a stable voltage and current in portable and embedded applications. With its wide range of input and output voltages and low quiescent current, the device provides an optimal solution for low dropout and low quiescent current applications.

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