BU33SD5WG-TR Integrated Circuits (ICs)

Voltage Dropout (Max):	0.15V @ 100mA
Supplier Device Package:	5-SSOP
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	68dB (1kHz)
Current - Quiescent (Iq):	80µA
Current - Output:	500mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

BU33SD5WG-TR is part of a regualtor family of Linear Voltage Regulators, a type of PMIC (Power Management IC). Specifically, it is a Low Dropout (LDO) Regulator pioneered by Texas Instruments. The BU33SD5WG-TR is designed to provide a steady and adjustable voltage output at 1.5A maximum source or sink current, while maintaining its very low quiescent current dissipation. The device is an ideal choice for applications that require a low dropout condition of 1.1V at a load current of 1A.

Application fields

The application fields of the BU33SD5WG-TR LDO Regulator are numerous, as it provides users with a reliable and low dropout voltage regulation for automotive, industrial and consumer applications. Firstly, the BU33SD5WG-TR is widely used in automotive applications. Its low dropout operation and high efficient operation supports the safety systems such as airbag and ABS in a car. Secondly, the BU33SD5WG-TR is a great fitting for industrial applications such as solar panels, battery chargers, and drives, thanks to its linear regulation, low noise, and stability performance. Finally, it is also a great choice for consumer electronics, specifically devices such as power banks, which require a high quality voltage regulation.

Working Principle

The BU33SD5WG-TR operates on the well known principle of negative feedback. In this case, the device obtains feedback from the output voltage and compares it against a reference voltage. If the output voltage is too high, the device will reduce the current to lower the voltage. Similarly, if the output voltage is too low, the device will increase the current to raise the voltage. This compares to and adjusts the output continuously, thus providing a steady output voltage. The BU33SD5WG-TR is an ideal low dropout linear regulator due to its wide input range from 2V to 28V, and its low quiescent current (typically 90μA). This also means that only a small heat sink is required for most applications, as the BU33SD5WG-TR remains cool and efficient even with a 1.5A load.

Conclusion

Overall, the BU33SD5WG-TR is an ideal choice for many automotive, industrial and consumer applications. Its unique low dropout and efficient performance makes it stand out from other linear regulators, while its wide operating temperature range (-40°C to +125°C) and feedback loop design assure every user of a reliable yet simple regulation solution. Thus, when looking for a reliable Linear Voltage Regulator, consider the BU33SD5WG-TR PMIC.

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