TPS79942DDCRG4

Current - Output:	200mA
Base Part Number:	TPS79942
Supplier Device Package:	SOT-23-5
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	70dB ~ 38dB (100Hz ~ 100kHz)
Current - Quiescent (Iq):	60µA
Series:	--
Voltage Dropout (Max):	0.16V @ 200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4.2V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction of TPS79942DDCRG4

TPS79942DDCRG4 is a single-chip ultra-low quiescent, low dropout (LDO) linear voltage regulator specifically designed to provide very low power consumption. The device is a monolithic integrated circuit offering regulated low output voltage, adjustable or factory-programmed. It is ideally suited for battery-powered applications or systems that require very low quiescent and dynamic current consumption.

TPS79942DDCRG4 Application Field

TPS79942DDCRG4 can be used in a variety of applications. It can provide a stable power supply for portable battery-powered applications. It also works in low-voltage transmitter designs that function on a battery source. It also has Industrial, Automotive, and Aerospace applications as it is capable of operating in harsh environments due to its robust electro-magnetic compatibility (EMC) and integrated thermal protection.

For example, it can be used in small industrial modules such as portable devices, mobile phones, small robots, battery and electronic assembly systems, and other text electronic products that require a compact, low-power linear voltage regulator. Additionally, it can be used in medical device power management applications as well as embedded systems, wireless transmitter and receivers, and RFID applications.

TPS79942DDCRG4 Working Principle

The TPS79942DDCRG4 linear voltage regulator works according to the conventional B-E junction principle. It works by controlling the voltage drop across a P-N junction, which is the dominant source of voltage control in the nature of bipolar transistors. The device operates with input voltage ranging from 3V to 6V and output voltage settings from 0.82V to 4.2V. The TPS79942DDCRG4 includes an on-chip voltage reference, output current limiter, and temperature, current, and voltage protection features.

The TPS79942DDCRG4 utilizes advanced processing techniques and offering ultra-low quiescent current and low dropout voltage, making it suitable for portable systems. Additionally, its output current capability is quite good and can supply up to 150mA of static current draw and 200mA of dynamic current draw. It also features an advanced shutdown mode that automatically reduces the quiescent current to 1μA, making it an ideal solution for battery-powered applications that require low power consumptions.

The TPS79942DDCRG4 also features a wide temperature operating range from -40°C to +125°C. This device offers excellent temperature stability, providing an output voltage tolerance of ±0.5%. The device also ensures high reliability with a strong current limit of 200mA, allowing it to support higher load currents under certain condition. Lastly, the device offers EMC compatibility and over current and short circuit protection which make it suitable for a number of commercial and consumer applications.

Conclusion

The TPS79942DDCRG4 is an ideal single-chip ultra-low quiescent, low dropout linear voltage regulator specifically designed to provide very low power consumption. It offers excellent temperature stability and a wide temperature operating range from -40°C to +125°C. The device is suitable for portable battery-powered applications or systems that require very low quiescent and dynamic current consumption. Additionally, its integrated thermal protection and EMC compatibility make it an ideal solution for a number of commercial and consumer applications.

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