NCP1117ST33T3

Current - Output:	1A
Base Part Number:	NCP1117ST33
Supplier Device Package:	SOT-223
Package / Case:	TO-261-4, TO-261AA
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	64dB (120Hz)
Current - Quiescent (Iq):	10mA
Series:	--
Voltage Dropout (Max):	1.2V @ 800mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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NCP1117ST33T3 Application Field and Working Principle

Introduction

NCP1117ST33T3 is a positive fixed output linear voltage regulator with internal current limit, thermal shutdown and external shutdown control capabilities. As a member of ON Semiconductor\'s standard linear voltage regulator family, it offers superior performance and bandwidth in a wide range of applications and can operate at up to 100V input and output. With an input voltage range of 1.8V to 24V, a maximum output current of 150mA, and an operating temperature range of -40°C to +125°C, NCP1117ST33T3 is well suited for a variety of voltage stabilization applications.

Classification

NCP1117ST33T3 is classified under the PMIC (Power Management IC) Voltage Regulators Linear category. Linear voltage regulators are designed to maintain a steady output voltage level under varying input and load conditions. They are capable of powering a wide range of applications, including electrical and electronic gadgets, computer systems and network infrastructure.

Application Field

NCP1117ST33T3 is typically used in a wide range of applications, including:

• Industrial control systems
• Instrumentation equipment
• Communication systems
• Medical equipment
• Lighting control systems
• Portable computing devices
• Test and measurement equipment
• Consumer electronics
• Automotive systems
• Security and surveillance systems

Features

Some of the main features of NCP1117ST33T3 include:

• Wide input voltage range of 1.8V to 24V
• Positive fixed output voltage
• Internal current limit, thermal shutdown and external shutdown control features
• High step-up efficiency
• Low operating current
• Small form factor – SOT-223 package
• Wide temperature range of -40°C to +125°C

Working Principle

NCP1117ST33T3 is a monolithic linear voltage regulator. Its output voltage is regulated by comparing an internal reference voltage to the output feedback voltage. When the output voltage falls below the internal reference voltage, the regulator turns on more current to its output and the output voltage rises. Conversely, when the output voltage exceeds the reference voltage, the regulator turns off its output and the output voltage falls.The operating current of NCP1117ST33T3 is determined by the amount of current that is pulled from its output node or drain. When the load current is above the internal current limit, the regulator turns its output off and the output voltage drops. At this point, the regulator will stay off until the load current reduces and the output voltage rises up again. The thermal shutdown feature of NCP1117ST33T3 is designed to protect the device from thermal runaway. When the die temperature rises above the upper limit, the voltage regulator will shutoff the output and prevent further thermal damage. The external shutdown feature allows the regulator to be enabled and disabled via an external control signal. This can be used to conserve power when the device is not in use, or to switch the output voltage when connected to a switching power supply.

Conclusion

The NCP1117ST33T3 linear voltage regulator offers superior performance and bandwidth in a wide range of applications. It is an ideal solution for a variety of voltage stabilization applications. With an input voltage range of 1.8V to 24V, a maximum output current of 150mA and an operating temperature range of -40°C to +125°C, NCP1117ST33T3 is well suited for industrial control systems, instrumentation equipment, communication systems, medical equipment, lighting control systems, portable computing devices, test and measurement equipment, consumer electronics and automotive systems.

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