TPS62203DBVR

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	TPS62203
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1MHz
Current - Output:	300mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	6V
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS62203DBVR Application Field and Working Principle

The TPS62203DBVR is a three-terminal, ultra-low output voltage synchronous buck dc-to-dc converter regulator designed for battery-powered applications. It is a low dropout, high efficiency, and high power density DC/DC switching regulator. It is suitable for applications such as battery-powered phones, tablets and provides a small, low cost solution that saves space in portable applications. This device is classified into PMICs (Power Management ICs) - Voltage Regulators – DC DC Switching Regulators.

Overall Features

The TPS62203DBVR has several features which enable it to provide excellent performance. These features are listed below:• Operating voltage range of 2.3V to 5.5V• Output current of up to 3A• Maximum output voltage of 0.75V • Low quiescent current of 3.0 - 5.5µA• Low output noise• Low standby current• Very fast transient response• Thermal protection• Overload protection• Current-mode, pulse-width-modulated (PWM) loller • Accurate and reliable output voltage

Performance Benefits

The TPS62203DBVR can provide reliable and consistent performance, owing to its range of performance benefits. These benefits include: • High conversion efficiency: up to 95% • Low ripple & noise voltage of 18 mV RMS (20-MHz bandwidth)• Excellent transient response • Wide default output voltage range• Low component count• Accurate and reliable output voltage • Adjustable soft start• Adjustable switching frequency• High power density• Comprehensive protection against shorts, under-voltages and overcurrents

Application Fields

Given its wide range of features, the TPS62203DBVR is suitable for a broad range of applications. In particular, the device can be used to replace linear regulators in low power applications, such as IoT and consumer electronics, where power efficiency and space savings become important. Other applications for the device include:• Battery-powered applications • Personal electronics• Wearable devices• Industrial and home automation• Automotive electronics• Medical devices• Point-of-load conversion

Working Principle

The TPS62203DBVR is a synchronous buck converter. It operates using the principle that inductors store energy when subjected to a changing current, and store energy when subjected to a changing voltage. When an input voltage is applied, a high-side MOSFET (metal-oxide-semiconductor field-effect transistor) switches are turned on and the high-current MOSFET pulls current through the inductor. As the current through the inductor increases, the voltage developed across the inductor increases. When the voltage across the inductor reaches the input voltage, the high-side MOSFET switches off and the low-side MOSFET switches on, allowing the linear voltage regulator to regulate the current through the inductor. As the current through the inductor decreases, the voltage stored in the inductor is passed through the low-side MOSFET to the output of the converter, providing a regulated output voltage. To reduce switching noise, the TPS62203DBVR implements a short dead-time between the high-side and low-side MOSFET. The converter also features an adjustable soft start and adjustable frequency, allowing the user to optimize the converter for their application.

Conclusion

The TPS62203DBVR is a powerful, efficient, and space-saving DC/DC switching regulator. It is suitable for a variety of battery-powered and other low-power applications, and offers excellent performance benefits such as a low quiescent current, high conversion efficiency, wide default output voltage range, and adjustable soft start and switching frequency. Thanks to its versatile feature set and wide range of application fields, the TPS62203DBVR is an ideal choice for portable and consumer applications that require reliable and consistent performance.

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