LM317LCPK – TEXAS INSTRUMENTS

The LM317LCPK is a low-power, adjustable 3-terminal positive voltage regulator in a SOT-223 surface-mount package. It offers a wide adjustable output voltage range from 1.2V to 37V, making it highly versatile. Its low quiescent current of typically 5mA allows for efficient operation in battery-powered applications. The device features a guaranteed output current of 100mA, though it can handle higher currents with appropriate heatsinking. Internal thermal overload protection and short-circuit protection enhance robustness. Compared to its higher-power counterparts, the LM317LCPK prioritizes low power consumption and compact size, making it ideal for space-constrained designs._x000D_
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Typical applications include low-current precision voltage references, battery-powered circuits requiring adjustable voltage outputs, and portable devices where minimizing power dissipation is crucial. The SOT-223 package facilitates automated surface-mount assembly, streamlining manufacturing processes. Designers should note the input-output voltage differential requirement (minimum 3V) and consider using external pass transistors for currents exceeding 100mA. The LM317LCPK’s inherent simplicity and well-defined characteristics make it a straightforward yet powerful choice for a wide array of low-power, adjustable voltage regulation needs.