S-1701B5040-U5T1G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Applications:	Converter, Battery Powered Devices
Voltage - Input:	2 V ~ 6.5 V
Number of Outputs:	1
Voltage - Output:	5V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	SOT-89-5/6
Supplier Device Package:	SOT-89-5

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S-1701B5040-U5T1G Application Field and Working Principle

Introduction

The S-1701B5040-U5T1G, or "S-1701B" for short, is a high performance regulator from Texas Instruments. Designed for use with multiple system voltages and compatible with a wide range of voltage requirements, the S-1701B has become a popular choice for designers in need of a precision and reliable voltage regulator that can handle high loads and offer superior accuracy.

Application Field

The S-1701B is mainly used in aerospace, automotive, power grid, industrial control and telecommunications as well as consumer and other specialized markets for its reliable and precise control of voltage and current.The S-1701B is also ideal for use in applications that require both a current and voltage regulator. It provides up to 40mA of steady current, and can ramp up to 60mA of peak current quickly and precisely. Moreover, its crystal oscillator ensures superhigh accuracy and stability while providing the flexibility to operate at frequencies up to 19.2kHz.For intense operations, the S-1701B is also equipped with a configurable over-temperature protection that actively monitors and manages the junction temperature automatically to prevent heat-related damages.

Working Principle

The S-1701B operates by steps. First, the user will select the required operating voltage and current demands. Then, the S-1701B acts as an adjustable voltage source to supply the appropriate output voltage to the load.To achieve this, the S-1701B uses an internal voltage reference (VREF) to compare the output voltage with the requested voltage. When the voltage difference is too low, it will internally increase the duty cycle sensor (DCS) to produce a larger output voltage. Conversely, if the voltage difference is too high, the DCS will reduce the output voltage by decreasing its duty cycle.In order to attain the most accurate regulation, an external loop compensation circuit is suggested for S-1701B. With the help of an external resistor and capacitor, the loop compensation circuit interacts with the hysteresis of the DCS and accurately routes the current response of the S-1701B to enable faster and more precise output voltage control.

Summary

The S-1701B is a high performance Voltage and Current regulator from Texas Instruments. It is mainly used in aerospace, automotive, power grid, industrial control and telecommunications, consumer and specialized markets thanks to its reliable and precise control of voltage and current.The S-1701B operates by comparing the output voltage with the requested voltage through an internal voltage reference. In order to attain the most accurate regulation, an external loop compensation circuit is suggested for improved performance. With the help of an external resistor and capacitor, the loop compensation circuit interacts with the hysteresis of the DCS to achieve faster and more precise output voltage control.

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