TPS70950DBVR

Current - Output:	150mA
Base Part Number:	TPS70950
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, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	80dB ~ 52dB (10Hz ~ 1kHz)
Current - Supply (Max):	350µA
Current - Quiescent (Iq):	2.05µA
Series:	--
Voltage Dropout (Max):	1.2V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS70950DBVR Application Field and Working Principle

TPS70950DBVR is a series of linear voltage regulators supplied by Texas Instruments. It is designed to minimized the number of external components required to provide a full 3-A FET pass load solution which is used in central office applications and industrial, embedded, computing and communications systems. The devices in this series are known for their ability to generate high currents in low-power, low-voltage systems.

Application Fields

TPS70950DBVR is primarily used in applications that require a regulated output voltage from a low-power input source. For example, it can be used as a single-supply voltage regulator for computing, communications and industrial control systems. It can also be used to deliver 3A power in low-voltage systems such as those found in ATA, IDE and SCSI hard drive controllers and in modems, laptops and other portable electronic devices. It is also the perfect choice for providing power in wireless communication systems such as those used in Mobile WiMAX, 3G/4G LTE and CDMA networking applications.

Working Principle

TPS70950DBVR is designed to minimise the number of external components required to provide a full 3-A FET pass load solution. It works by combining an onboard n-channel FET and linear regulator in one integrated circuit, eliminating the need for external components such as resistors and capacitors in the output stage circuitry. The device is also equipped with an optional internal low dropout (LDO) mode, allowing it to operate with lower power consumption when operating from a higher voltage source. The device works by converting the high voltage input into a heating voltage, which is then regulated to the required output voltage by the linear regulator. The n-channel FET is used to control the amount of current that passes through the regulated output and the LDO mode can be used to reduce power consumption when the input voltage is higher than the output voltage. The low dropout mode is also able to reduce noise, improve transient response and keep the output voltage stable through load transients.

Features

TPS70950DBVR has some unique features that make it an attractive choice for many applications. These include an adjustable operating current limit, over-current and over-temperature protection, internal soft-start and a shutdown mode for power saving. It also has a wide input voltage range from 4.5V to 36V, making it suitable for many different operating conditions. The wide operating temperature range of -40°C to +125°C also ensures that it can be used in harsh environments.

Conclusion

TPS70950DBVR is an ideal solution for providing reliable, low-noise power to computing, communications and industrial control applications. Its integrated FET and linear regulator minimises the need for external components, while its wide input and operating temperature range makes it suitable for many different environments. Its over-current and over-temperature protection, adjustable operating current limit, internal soft-start and shutdown mode also make it a good choice for many applications.

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