LM317LCPWRE4

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The LM317LCPWRE4 is a linear voltage regulator with adjustable voltage range. It is a three-terminal regulator that is available in either a standard TO-220 package or a surface-mount package. It is commonly used in low-power applications, such as portable electronics and small batteries, where low noise and small size are important. The LM317LCPWRE4 can be used in a wide range of applications, from low-power linear digital systems to large server systems.

Features

• Wide adjustable voltage range: 1.5V to 37V
• Surface-mount and through-hole packages
• Low operating current, typically 15mA
• High temperature stability
• Low output noise and ripple
• Overload and short-circuit protection

Application fields

The LM317LCPWRE4 can be used in a variety of applications, including:

• Battery-powered electronic devices
• Price computing scales
• Audio equipment and musical instruments
• Surveillance systems
• Computer power supplies
• Spacecraft power systems
• Electronic toys and games
• Home automation systems
• Small-scale robotics

Working principle and electrical characteristics

The LM317LCPWRE4 is a three-terminal, voltage-regulator IC that operates from a minimum working voltage of 1.5V up to a maximum of 37V. It uses a regulated output to maintain the output voltage at a level close to the input voltage. In order to do this, the LM317LCPWRE4 requires two external components to adjust and control the output voltage: a power resistor and an isolating diode.

The principle of operation of the LM317LCPWRE4 is essentially that of a constant-current source. In this arrangement, the output voltage is essentially constant provided the load current does not exceed the current-limit value. The current-limit value is determined by the value of the power resistor connected to the output voltage adjustment pin. This pin, labeled \'ADJUST\', is used to adjust the output voltage by changing the value of the power resistor.

The LM317LCPWRE4 also has a wide range of protection features to protect against a variety of faults. These protection features include over-temperature protection, over-current protection, over-voltage protection, and open-circuit protection. All of these protection features are controlled by voltage and temperature sensing, which helps to protect the LM317LCPWRE4 from faults that may cause damage to the device.

The LM317LCPWRE4 is able to provide high-accuracy regulation with extremely low output noise and minimal power consumption. The device can provide load currents of up to 1A with a maximum power dissipation of 1.5W. The power dissipation can be further reduced by the use of a heat sink.

The LM317LCPWRE4 is able to operate from a wide range of temperature and temperature changes, from -25°C to 125°C. The device is also well-suited for remote sensing applications, as the output voltage is independent of the line voltage.

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