TPS77718PWPG4

Current - Output:	750mA
Base Part Number:	TPS77718
Supplier Device Package:	20-HTSSOP
Package / Case:	20-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable, Power Good, Reset
PSRR:	60dB (1kHz)
Current - Quiescent (Iq):	125µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Overview

TPS77718PWPG4 is a linear voltage regulator (LVR) integrated circuit used in the field of power management and regulation. It is designed to provide regulation in a wide range of applications, including computer systems and other electronic devices, such as server power supplies, household appliances, and digital cameras. TPS77718PWPG4 is capable of regulating output current up to 3 A with an adjustable output voltage range from 0.65 V to 4.2 V.; a 0.8 V dropout voltage on the input, and an operating temperature range of -40°C to +125°C. It also includes features such as an enable pin, thermal overload shutdown, current limiting, and can be asserted for up to 2 A load current without the need for external components.

Features

In order to provide its users with higher performance and increased efficiency, TPS77718PWPG4 comes with the following features and specifications. • Output current up to 3 A• Adjustable output voltage from 0.65 V to 4.2 V• 0.8 V dropout voltage on the input• Enable pin can be asserted for up to 2 A load current without the need for external components• Integrated thermal overload shutdown for protection against thermal runaway• Integrated current-limiting circuit for protection against excessive output current• Over-temperature protection• Operating temperature range of -40°C to +125°C

Application Fields

TPS77718PWPG4 is suitable for a variety of devices and applications, such as:• Computer systems • Server power supplies • Household appliances • Digital cameras • Automotive systems • Telecom Infrastructure• Industrial equipment • Networking and communication systems• Consumer electronics

Working Principle

The TPS77718PWPG4 consists of an enabled current-limited, adjustable linear regulator circuit, complemented by an internal thermal shutdown protection circuit, allowing the device to be employed without external current-limiting or over-temperature protection. It also provides an adjustable output voltage range of 0.65 V to 4.2 V, a 0.8 V dropout voltage, and a maximum output current of 3 A.The regulating element of the TPS77718PWPG4 LVR is made up of an N-MOSFET pass element and P-MOSFET and N-MOSFET pair connected in series between the input and output. The duty of the N-MOSFET is to limit the input current. The duty of the P-MOSFET and N-MOSFET pair is to set the output voltage. The P-MOSFET and N-MOSFET pair is also connected to the feedback pin of the LVR. The output voltage is set by adjusting the voltage at the feedback pin. The TPS77718PWPG4 also has an internally generated soft-start function with a maximum charging time of 2 ms, allowing the device to start up without overloading the input compartment. The soft-start sequence begins when the device is enabled. After the pre-set soft-start time expires, the device runs in normal mode. For protection against over-temperature, the TPS77718PWPG4 has an internal over-temperature protection circuit. This will cause the device to shut down when the temperature reaches an internally pre-set temperature, thus protecting the device from thermal damage.The TPS77718PWPG4 also has current-limiting protection. The device contains an internal current-limit circuit that will limit the output current when the output current reaches a certain value, as predetermined by the circuit. This protection is beneficial for ensuring the device does not reach maximum limits. In addition, the TPS77718PWPG4 also has an enable pin that allows the device to be enabled and disabled as necessary. The device is disabled when the enable pin is low and enabled when the enable pin is high. The enable pin also adjusts the current-limit of the device up to 2 A without the need for external components. Overall, the TPS77718PWPG4 provides excellent stability, regulation, and protection in a range of applications, making it ideal for use in a variety of systems where power management and regulation are necessary.

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