LD2982BM50R

Current - Output:	50mA
Base Part Number:	LD2982B
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	45dB (1kHz)
Current - Supply (Max):	1.2mA
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	0.225V @ 50mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LD2982BM50R Application Field and Working Principle

LD2982BM50R is a highly efficient linear voltage regulator (LDO) with a maximum input voltage of 50V and a maximum output voltage of 5.5V. It belongs to PMIC – Voltage Regulators – Linear and is specifically designed for the requirements of the automotive industry. LD2982BM50R features extremely high power efficiency, fast transient response, and low dropout voltage. In addition, it is available with current limits of up to 7A and efficiency rates of up to 88%.

Overview of LD2982BM50R

LD2982BM50R combines advanced features such as a low dropout voltage, wide ambient temperature range, and a wide input voltage range. With an input voltage range of 4V to 50V, LD2982BM50R is able to provide reliable regulation in a wide range of automotive applications. The low dropout voltage also makes it an ideal choice for battery or other portable applications.The LD2982BM50R also feature a wide range of interfaces such as current limit, enable and soft start pin control. Additionally, the device also provides temperature protection and output current limiting protection.

Features and Benefits

The LD2982BM50R offers a number of useful features and benefits to users, such as:

• High Efficiency: The LD2982BM50R has a maximum efficiency of 88% and can operate at high current levels without any thermal issues.
• Wide Input Voltage Range: The device can accept a wide range of input voltages from 4V to 50V.
• Low Dropout Voltage: The low dropout voltage of the LD2982BM50R makes it an ideal choice for battery or other portable applications.
• High Quality: The LD2982BM50R features high power efficiency, fast transient response, and low dropout voltage.
• Robust: The device is backed by extensive testing to ensure reliable operation under a wide range of conditions.
• Wide Ambient Temperature Range: The LD2982BM50R can operate in temperature ranges from -40 to +125°C.

Application Fields of LD2982BM50R

Due to its highly efficient power supply and fast transient response, the LD2982BM50R is suitable for a wide range of automotive and industrial applications. The device is ideal for powering vehicle ECUs, industrial sensors, and automotive displays. The LD2982BM50R is also suitable for a wide range of battery operated applications such as personal electronics and portable devices. In addition, the device can also be used in industrial power supplies, LED lighting and a variety of other applications.

Working Principle of LD2982BM50R

The LD2982BM50R is based on a feedback control loop. It consists of a MOSFET pass transistor that is controlled by an internal error amplifier. The error amplifier compares the programmed voltage from the voltage setting pin (V SET ) to the feedback voltage from the output voltage pin (V OUT ). The output of the error amplifier then drives the gate of the pass transistor, which is connected between the input voltage and output voltage.The pass transistor is then switched on or off depending on the set point and the output voltage feedback. When the pass transistor is on, current flows from the input to the output and the output voltage is regulated. When the pass transistor is off, no current flows and the output voltage is not regulated.The pass transistor is kept on at a variable duty cycle, depending on the input and output voltages. The duty cycle of the pass transistor will be adjusted to maintain a constant output voltage.

Conclusion

LD2982BM50R is an advanced, highly efficient linear voltage regulator with a maximum input voltage of 50V and a maximum output voltage of 5.5V. It is specifically designed for the requirements of the automotive industry and features high power efficiency, fast transient response, and low dropout voltage.The LD2982BM50R is suitable for a wide range of automotive and industrial applications such as powering vehicle ECUs, industrial sensors, and automotive displays. It is also suitable for battery operated applications such as personal electronics and portable devices.The device features a feedback control loop with a MOSFET pass transistor that is controlled by an internal error amplifier. The pass transistor is switched on or off depending on the set point and the output voltage feedback, resulting in stable and reliable output voltage control.

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