TPS76425DBVRG4

Current - Output:	150mA
Base Part Number:	TPS76425
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, Reverse Polarity
Control Features:	Enable
PSRR:	60dB (1kHz)
Current - Supply (Max):	140µA
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	0.6V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS76425DBVRG4 Application Field and Working Principle

Introduction to the TPS76425DBVRG4

The TPS76425DBVRG4 is a Low-Dropout (LDO) linear voltage regulator from Texas Instruments. It is an ultra-low-power (3 µA) high-performance low-dropout linear regulator. This device is specifically designed to provide ultra-low-power performance and allows for operation at very low power consumption levels with excellent transient response. The TPS76425DBVRG4 also allows for high-value, low-regulation-voltage designs without the use of external capacitors.

Application field

The TPS76425DBVRG4 is designed primarily for use in cellular phones, laptops, tablets, and other portable electronics applications. It is also suitable for a wide range of other applications.

Advantages

The TPS76425DBVRG4 offers several advantages, including:

• Ultra-low-power performance, with excellent transient response
• High-value, low-regulation-voltage designs without the use of external capacitors
• Low operating current (3 μA)
• High efficiency, high power, and good noise immunity
• Small package size

Working Principle

The working principle of the TPS76425DBVRG4 is based on the linear regulator. The linear regulator uses an amplifier to compare the output voltage with an internal reference voltage. The output voltage is then adjusted until it equals the reference voltage. This is achieved by using a transistor as the amplifier, with its base connected to the output voltage, and its emitter connected to the reference voltage. When the amplifier output is higher than the reference voltage, the transistor is switched on, and the output voltage is regulated to the reference voltage. When the amplifier output is lower than the reference voltage, the transistor is switched off, and the output voltage is adjusted to the reference voltage.The TPS76425DBVRG4 also features an internal pass transistor, which is used to regulate the output voltage. This transistor is connected in series with the load, and is used to maintain a constant output voltage. The pass transistor is controlled by the amplifier and adjusts the output voltage when the output voltage is different from the reference voltage.The TPS76425DBVRG4 also includes a current limit circuit, which is used to limit the current through the load. This circuit is used to protect the device from over-current situations.

Conclusion

The TPS76425DBVRG4 is a versatile low-dropout (LDO) linear voltage regulator. It offers low power consumption and excellent transient response, along with high-value and low regulation voltage designs. The integrated pass transistor and current limit circuit provide additional protection and stability. The TPS76425DBVRG4 is well suited for use in portable electronic applications, and a wide range of other applications.

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