TPS53219ARGTT Integrated Circuits (ICs)

Series:	D-CAP™, Eco-Mode™
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Type:	Transistor Driver
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Number of Outputs:	1
Output Phases:	1
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 25 V
Frequency - Switching:	500kHz
Duty Cycle (Max):	90%
Synchronous Rectifier:	Yes
Clock Sync:	No
Serial Interfaces:	--
Control Features:	Enable, Frequency Control, Power Good, Soft Start
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	16-VFQFN Exposed Pad
Supplier Device Package:	16-QFN (3x3)
Base Part Number:	TPS53219A

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TPS53219ARGTT Application Field and Working Principle

TXPS53219ARGTT is a monolithic synchronous step-down switching controller that operates from an input voltage range of 4.5 V to 14 V and utilizes a total of 10 integrated circuits to generate output voltages as low as 0.6 V. The device is ideal for applications requiring low output voltages, such as communications and computing systems, data routers, and storage systems.The TXPS53219ARGTT is designed to enable high-efficiency, high-power applications by providing specific features such as DirectFET® power MOSFET control, one-cycle close feedback loop, and 3% reference accuracy with a 0.6V reference voltage. It has a wide variety of features, including user-selectable power saving mode, adjustable operating frequency, adjustable slew rate, and programmable soft start.In terms of its working principle, the TXPS53219ARGTT operates by using a pulse-width modulation (PWM) technique to regulate the output voltage. The device monitors the external feedback voltage, which represents the actual output voltage of the application, and adjusts the on/off time of the power MOSFET accordingly. The output voltage reaches its intended steady-state value when the error between the feedback voltage and the 0.6V reference voltage is minimized. The operating frequency and slew rate of the TXPS53219ARGTT can be programmed with the use of an external resistor.The TXPS53219ARGTT also incorporates a unique one-cycle close loop, which allows for fast transient response. This ensures that all output voltage changes (whether from load, line, or frequency changes) are quickly responded to by the controller, thus providing highly efficient, low-noise operation.Additionally, the device features an output voltage sequencing function to prevent power MOSFET turn-on voltage surges. This ensures a safe and reliable power-up sequence for the system. The TXPS53219ARGTT also features programmable over-current protection and under-voltage lockout. This allows designers to further protect their applications from possible damage.Overall, the TXPS53219ARGTT is a highly-efficient, highly-reliable switching controller that is well-suited for a wide variety of applications such as communications and computing systems, data routers, and storage systems. With many advanced features and a low-power consuming design, the TXPS53219ARGTT is an excellent choice for professionals.

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