L4941BDT

Current - Output:	1A
Base Part Number:	L4941B
Supplier Device Package:	DPAK
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C
Protection Features:	Over Temperature, Reverse Polarity, Short Circuit
Control Features:	--
PSRR:	68dB (120Hz)
Current - Supply (Max):	40mA
Current - Quiescent (Iq):	8mA
Series:	--
Voltage Dropout (Max):	0.7V @ 1A
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Part Status:	Obsolete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:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction to L4941BDT

The L4941BDT is a low-drop voltage regulator manufactured by STMicroelectronics in its TSOP package. It is designed for supplying low-noise linear regulated voltages from a 5 V to 35 V input range, making it suitable for use in a variety of industrial and automotive applications. The device is feature-rich, and its architecture provides flexibility, ease of design and superior performance.

Application fields

The L4941BDT is suitable for a variety of applications due to its flexibility and low noise operation. Applications include industrial control and automation, oil & gas, communications, instrumentation, medical and automotive markets.As it is able to convert efficiently a wide input range of 5 V to 35 V, the L4941BDT is ideal for use in automotive, where various power sources are present and efficient regulation of the supply is required. It also ensures all designs meet the rigorous EMC and ESD requirements of the notoriously demanding automotive environment.The device maintains low output noise and a good ripple rejection, making it suitable for applications such as computing and office equipment, where clean power supply is needed.

Working Principle

The L4941BDT operates using a linear regulation principle, using an internal PNP power transistor to provide the negative voltage regulation. An external PNP transistor, or diode, is used to control the switching frequency of the internal power transistor.At the input, the device monitors the input voltage and then compares it with the reference voltage, the output of the reference regulator. If the input voltage is higher than the reference voltage, the output of the internal driver will be high, driving the external PNP transistor and turning the internal power transistor ON. If the input voltage is lower than the reference voltage, the output of the internal driver will be low, turning the internal power transistor OFF.By controlling the output voltage in this way, the L4941BDT can maintain an accurate and stable output voltage.

Conclusion

The L4941BDT is a low-drop voltage regulator manufactured by STMicroelectronics in its TSOP package. The device’s flexibility and feature-rich architecture make it suitable for use in a variety of industrial, automotive and other applications. It operates on the principle of a linear regulation, using an internal PNP power transistor to provide the negative voltage regulation. By controlling the output voltage in this way, the L4941BDT can maintain an accurate and stable output voltage.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description