
Allicdata Part #: | LM317LZRPGOSTB-ND |
Manufacturer Part#: |
LM317LZRPG |
Price: | $ 0.11 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | IC REG LIN POS ADJ 100MA TO92-3 |
More Detail: | Linear Voltage Regulator IC Positive Adjustable 1 ... |
DataSheet: | ![]() |
Quantity: | 2000 |
2000 +: | $ 0.09785 |
6000 +: | $ 0.09153 |
10000 +: | $ 0.08522 |
50000 +: | $ 0.07891 |
Current - Output: | 100mA |
Base Part Number: | LM317L |
Supplier Device Package: | TO-92-3 |
Package / Case: | TO-226-3, TO-92-3 (TO-226AA) (Formed Leads) |
Mounting Type: | Through Hole |
Operating Temperature: | 0°C ~ 125°C |
Protection Features: | Over Current, Over Temperature |
Control Features: | -- |
PSRR: | 80dB (120Hz) |
Current - Quiescent (Iq): | 10mA |
Series: | -- |
Voltage Dropout (Max): | -- |
Voltage - Output (Max): | 37V |
Voltage - Output (Min/Fixed): | 1.2V |
Voltage - Input (Max): | 40V |
Number of Regulators: | 1 |
Output Type: | Adjustable |
Output Configuration: | Positive |
Part Status: | Active |
Packaging: | Tape & Box (TB) |
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Introduction
The LM317LZRPG is a voltage regulator integrated circuit (IC) used to lower the input voltage to a desired output voltage. The LM317LZRPG is part of Texas Instruments\' Power Management and Signal Path portfolio of products, and falls within their PMIC - Voltage Regulators - Linear family of products.
The LM17LZRPG package includes an adjustable output voltage regulator with a current-limiting constant-current source, current-sense amplifier and thermal protection. The LM317LZRPG offers flexibility in controlling the output voltage from as low as 0.6V to as high as 16V. The output voltage can be adjusted by adjusting the adjustment pin from 0.1V to 1V which is applied across an on-board resistor divider.
The LM317LZRPG offers stability for load and line regulation. It can work with a wide range of input voltages without external components. It is designed to provide protection against over-voltage, over-current and over-temperature by using built-in current limiting and thermal protection.
Application Field
The LM317LZRPG is a versatile and widely compatible IC used in a variety of applications. It is suitable for small, low voltage circuits that require precise voltage regulation. Its high power output and wide voltage range makes it widely applicable in a variety of end applications. These applications include: portable electronics, automotive applications, medical instrumentation, power supplies, computer peripherals, voltage sensing and control, LED lighting and more.
Working Principle
The LM317LZRPG works on the principle of feedback control. The output voltage is regulated to a predetermined voltage by comparing the output voltage with the reference voltage internally. It is internally configured with a differential amplifier that compares the output voltage with the reference voltage and then produces an error voltage. This error voltage is fed back to the adjust pin of the IC, which is used to adjust the output voltage.
The output voltage can be tuned using the internal resistors of the IC. The voltage is regulated to the desired level by adjusting the adjustment pin. This adjustment pin of the LM317LZRPG is connected to a resistor divider on the output side, and it follows the same output voltage when it is adjusted. This allows precise voltage regulation to be achieved.
The LM317LZRPG also has built-in current limiting and thermal protection to safeguard against overloads. The current limit of the device is determined by the internal current limit circuitry, which senses the current through an external sense resistor and provides protection against excessive overloads.
Conclusion
The LM317LZRPG is a versatile voltage regulator IC from Texas Instruments’ Power Management and Signal Path portfolio. It is a precision voltage regulator integrated with a current limiting and thermal protection for both overload and over-temperature. The LM317LZRPG is suitable for applications requiring small, low voltage circuits with precise voltage regulation. It is widely used in portable electronics, medical equipment, automotive systems, power supplies, and more.
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