LM317LCPKG3 Allicdata Electronics
Allicdata Part #:

LM317LCPKG3-ND

Manufacturer Part#:

LM317LCPKG3

Price: $ 0.18
Product Category:

Integrated Circuits (ICs)

Manufacturer: Texas Instruments
Short Description: IC REG LIN POS ADJ 100MA SOT89-3
More Detail: Linear Voltage Regulator IC Positive Adjustable 1 ...
DataSheet: LM317LCPKG3 datasheetLM317LCPKG3 Datasheet/PDF
Quantity: 1000
2000 +: $ 0.16260
Stock 1000Can Ship Immediately
$ 0.18
Specifications
Voltage Dropout (Max): --
Base Part Number: LM317L
Supplier Device Package: SOT-89-3
Package / Case: TO-243AA
Mounting Type: Surface Mount
Operating Temperature: 0°C ~ 125°C
Protection Features: Over Current, Over Temperature, Short Circuit
Control Features: --
PSRR: 80dB ~ 65dB (120Hz)
Current - Output: 100mA
Series: --
Voltage - Output (Max): 32V
Voltage - Output (Min/Fixed): 1.2V
Voltage - Input (Max): 38V
Number of Regulators: 1
Output Type: Adjustable
Output Configuration: Positive
Part Status: Active
Packaging: Tape & Reel (TR) 
Description

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( LM317LCPKG3)

LM317LCPKG3, short for "Linear Technology Corporation", is an integrated-circuit voltage regulator chip that can be used in applications in the field of Power Management Integrated Circuits (PMIC). Its operating principle involves using a combination of linear, or analog, and switching components to achieve improved system performance.

Applications

The LM317LCPKG3 is mostly applied in voltage regulation, as it offers accurate and continuous voltage regulation over a wide range of input voltages. It is also useful as a charge pump in buck/boost power management applications, including in USB charging port applications, high-efficiency digital and analog devices. It is also used in a variety of other heat generating DC applications that require continuous power conversion and fast transient response, such as DC/DC converters and buck converters.

Working Principle

The LM317LCPKG3 operates utilizing a switching control concept, in which it takes an input voltage from a power supply and converts it into a constant output voltage within a certain range. It does this by taking the given input voltage, regulating it within its operating range, and then outputting the adjusted voltage. It then adjusts the output voltage on its own, according to changes in input voltage, load current, and ambient temperature, ensuring a reliable and consistent output.

The LM317LCPKG3 voltage regulator contains an error amplifier, a series pass element (usually an npn or pnp transistor or a FET) with a current sensing feature, an external reference temperature sensing element (RT), current limit and temperature protection circuits. Its switching circuitry works by controlling the gate of the series pass transistor. This gate is used to control the current of the pass transistor, regulating the voltage to its desired output level.

The LM317LCPKG3 also has a non-inverting terminal (GCT) which enables the user to program its output voltage manually, so that it can be accurately tuned to the user\'s desired value. This can be done by sending an input signal to the GCT pin, which will then be compared to the voltage on the RT pin. The difference between the two then determines the output voltage.

Finally, the LM317LCPKG3 also has built-in protection features, such as overtemperature protection (OTP), current limit protection (CNP), and over-voltage protection (OVP). It also includes an enable pin (EN) which can be used to enable or disable the chip, depending on the user’s needs.

Conclusion

LM317LCPKG3 is a highly versatile voltage regulator chip with a variety of applications within the PMIC field. It can regulate a wide range of input voltages, continuously adjust output voltages based on changes in input voltage, load current, and temperature, and can be manually tuned to the user’s desired output voltage. It also includes a range of safety features to prevent any damage to the chip or to any circuits connected to it. All of these features make the LM317LCPKG3 an essential component for power management IC applications.

The specific data is subject to PDF, and the above content is for reference

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