TPS76530DG4

Current - Output:	150mA
Base Part Number:	TPS76530
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable, Power Good
PSRR:	63dB (1kHz)
Current - Quiescent (Iq):	50µA
Series:	--
Voltage Dropout (Max):	0.28V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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TPS76530DG4 Application Field and Working Principle

TPS76530DG4 is a three-terminal Linear voltage regulator integrated circuit, categorized under PMIC (Power Management IC). The linear voltage regulator, in general, is a very versatile and simple device which reduces an unregulated input voltage to a specific lower regulated output voltage for an analog and/or digital processor or microcontroller. TPS76530DG4 is a compact, highly efficient and cost-effective voltage regulator IC from Texas Instruments. It is designed and manufactured to provide precision and highly stable output regulation.It provides an efficiency range of over 90 percent.The voltage dropout is low (1.1 V), with a maximum output current of up to 300mA.The output voltage of TPS76530DG4 ranges from 1.2V to 5.1V.TPS76530DG4 offers various features such as overcurrent protection, thermal shutdown and over voltage protection, short circuit protection, current limit, and under Voltage lockout. Erroneous operations are prevented due to under-voltage lockout and current limit features which provides a safe working condition.The die temperature is maintained within a safe operating range by thermal shutdown feature.The datasheet of TPS76530DG4 provides the details of the components and information about the design. Apart from the features, the application field and working principle of the IC are also highlighted.Application FieldThe TPS76530DG4 IC is mainly used for systems requiring ultra-low quiescent current and high efficiency. They are mainly used in portable battery-powered systems, designed for extreme temperature ranges between 40°C to +125°C, because of its wide operating temperature range. The IC is particularly suited for low voltage processing solutions, i.e. for microcontrollers, Digital Signal Processors and digital logic. Its main application includes mobile phones, digital cameras, PDAs, and other handheld systems.Working PrincipleThe main principle of the TPS76530DG4 IC is the basic principle of operation of a linear regulator. It is based on the concept of controlling the output voltage by adjusting the input voltage. The input voltage is supplied to a transistor amplifier through a voltage divider. The transistor amplifier provides the necessary current to adjust the output voltage. The voltage divider is also used to accurately control the output voltage.The output voltage is then monitored by a comparator which compares the output voltage with the reference voltage. If the output voltage is higher than the reference voltage, the output is decreased, and vice versa. The reference voltage is usually kept at the required output voltage.The transistor amplifier is connected to the external power MOSFET which provides the necessary current to sustain the output voltage. The external MOSFET also provides the current limitation and is especially useful when the output voltage is near the dropout voltage.In conclusion, TPS76530DG4 is a three-terminal Linear voltage regulator integrated circuit. It is mainly used for systems requiring ultra-low quiescent current and high efficiency mainly used in mobile phones, digital cameras, PDAs, and other handheld systems. The working principle of the IC is the controlling of the output voltage by adjusting the input voltage. It is based on the concept of voltage divider, comparator and external power MOSFET.

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