TPS70358MHKH

Series:	--
Packaging:	Tube
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	2
Voltage - Input (Max):	6V
Voltage - Output (Min/Fixed):	3.3V, 2.5V
Voltage - Output (Max):	--
Voltage Dropout (Max):	0.25V @ 1A, -
Current - Output:	1A, 2A
Current - Quiescent (Iq):	250µA
PSRR:	65dB (1kHz), 60dB (1kHz)
Control Features:	Enable, Power Good, Reset, Sequencing
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	20-CDFF
Supplier Device Package:	20-CFP
Base Part Number:	TPS70358

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Application Field and Working Principle of TPS70358MHKH

The Texas Instruments TPS70358MHKH is a programmable, small-footprint 7 A step-down linear regulator that is categorized as a PMIC (Power Management IC). Ideal for powering high-performance microprocessors and systems, it helps control a wide range of output currents and voltages. The device is a combined step-down regulator and switch, with an integrated current limit circuit, an internal PMOS power switch, and an optional input-voltage monitoring circuit. It is a suitable replacement for discrete components and can be used for the efficient and safe power supply of sensitive loads in applications such as automotive, industrial, and consumer electronics.

The operating principle is based on the concept of linear regulation. It uses an external voltage regulator, usually a programmable voltage regulator, to manage the voltage of a load in two ways. First, it provides a steady output voltage even in the face of input voltage fluctuations. Secondly, it also acts as a buffer between the load and the power supply, preventing surges and over-voltages from entering the load. The TPS70358MHKH follows this principle and offers additional features such as an adjustable output voltage range, programmable signaling, and input voltage monitoring capabilities.

The TPS70358MHKH has an adjustable output voltage range between 0.6 V and 5.5 V, making it suitable for powering both low voltage and high voltage loads. It also features a programmable signaling pin that can be used to set the over-voltage and over-current thresholds. Additionally, it has an internal current limit and an input-voltage monitoring circuit, which helps to protect external components from over-current and over-voltage events. In addition to these features, the device is designed to optimize efficiency and reduce power consumption.

The internal construction of the TPS70358MHKH consists of three main sections; The step-down regulator, the P-channel Mosfet, and the input monitoring circuit. The step-down regulator is responsible for providing the power to the load. It uses a voltage reference and a comparator, to detect the output voltage and control it to the desired level. The P-channel Mosfet acts as a switch, opening and closing the current flow from the power supply to the load. Finally, the input monitoring circuit is used to measure the input voltage and protect the output from over-voltage and over-current events.

The TPS70358MHKH is an ideal solution for those looking for an efficient, safe, and reliable power supply for their applications. Its adjustable output voltage range and programmable signaling pins make it suitable for a wide range of loads, from low voltage to high voltage. Moreover, the internal current limit and the input voltage monitoring circuit help to protect the output from potential damage caused by over-current and over-voltage events, making it a reliable and safe option.

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