SC220QSTRT

Voltage - Input (Max):	5.5V
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	20MHz
Current - Output:	650mA
Voltage - Output (Max):	3.3V
Voltage - Output (Min/Fixed):	1V
Series:	Automotive, AEC-Q100, X-EMI™
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

SC220QSTRT is an integrated DC/DC Step-Down Switching Regulator designed for low power applications. It has a high efficiency, low quiescent current, and minimal external components, making it easy to use and cost-effective. It provides regulated output voltages from 0.9V to 20V and can handle currents up to 5A. With a wide input voltage range of 2.7V to 26V and adjustable output voltage, the SC220QSTRT can be used to power loads in a variety of applications.

Applications

The SC220QSTRT is suitable for a variety of applications, including embedded systems, portable devices, and automotive electronics. It is designed to replace slow, cumbersome linear regulators and provide a highly efficient, low-noise power supply. It can also be used in battery-powered applications such as lithum-ion batteries and super capacitorss, as well as in circuits that require very low quiescent current.

Features

The SC220QSTRT has a number of features that make it well suited for low power applications. It is adjustable from 0.9V to 20V, with a maximum output current of up to 5A. It has a wide input voltage range from 2.7V to 26V and can support load dump protection. It also has a wide operating temperature range from -40°C to +125°C, making it suitable for use in even the harshest environments.

Design

The SC220QSTRT is designed to be simple and easy to use. Its internal circuitry is composed of three primary components: an oscillator, a power transistor switch, and a control circuit. The oscillator provides the switching frequency, and the power transistor switch and control circuit provide regulation and protection. The SC220QSTRT is designed with a feedback loop, which ensures a steady and accurate output voltage while compensating for changes in input voltage and load conditions.

Working Principle

The SC220QSTRT works by controlling the duty cycle of the power transistor switch to control the output voltage. The transistor switch is switched on and off in a cycle determined by the oscillator. When the switch is turned on, current flows through the output inductor and is stored in the output capacitors. When the switch is turned off, the output capacitors supply the load with the stored current. The voltage regulator then takes a feedback signal from the output and adjusts the duty cycle of the switch to maintain the desired output voltage.

Conclusion

The SC220QSTRT is an integrated DC/DC Step-Down Switching Regulator designed for low power applications. It provides regulated output voltages from 0.9V to 20V, and can handle currents up to 5A. It has a wide input voltage range from 2.7V to 26V, and a wide operating temperature range of up to -40°C to +125°C. With a simple internal circuitry and easy to use design, the SC220QSTRT can be used in a variety of low power applications.

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