LT1764AEQ-3.3#PBF

The LT1764AEQ-3.3#PBF from Analog Devices is a fixed 3.3V, 3A low dropout (LDO) linear regulator housed in a 5-lead TO-263 surface-mount package. Designed for high-current, low-voltage regulation, the LT1764A family achieves an ultra-low dropout voltage of 340 mV at full load, allowing efficient operation with minimal input-to-output headroom. The regulator provides low output noise of 40 µVRMS over a 10 Hz to 100 kHz bandwidth and fast transient response, while maintaining stability with low-ESR ceramic output capacitors as small as 10 µF. Integrated protection includes current limiting, thermal shutdown, and reverse-battery protection, ensuring reliable performance under fault conditions.

Typical applications span industrial instrumentation, aerospace power distribution, defense communications, and other high-reliability systems where a clean, tightly regulated rail is essential for sensitive analog circuits, RF amplifiers, ADCs, and microprocessor loads. The device’s extended operating temperature range of -40°C to +125°C (E-grade) and the high-power TO-263 package with low junction-to-case thermal resistance simplify thermal management in dense assemblies. For procurement engineers, the LT1764AEQ-3.3#PBF remains an active production component from Analog Devices, reducing end-of-life risk in long-lifecycle programs. The #PBF suffix denotes lead-free finishing compliant with RoHS directives, and the part is backed by comprehensive qualification data suitable for ruggedized industrial and defense-grade applications.