FAN2564 Low Input Voltage 300mA LDO for Digital Applications

Category: Electronics, Fairchild Semiconductor, Regulators

FAN2564 LDO Overview

The FAN2564 is an efficient low-dropout (LDO) regulator from Fairchild Semiconductor, specifically designed for digital applications requiring a stable power supply. This LDO is well-suited for modern electronic devices, such as cell phones, smart phones, WLAN, 3G/4G data cards, and portable music players, due to its low input voltage range and robust output capabilities.

Key Features

The device can operate with an input voltage as low as 1.65V and provides a guaranteed output current of up to 300mA, conducive for digital loads. The output voltage is impressively accurate with a +1% initial output voltage accuracy and can be set between a fixed range from 1.2V up to 2.8V. It boasts a very low dropout of just 100mV at 300mA, making it an energy-efficient choice for applications needing precise voltage regulation.

The FAN2564 is designed to offer a low quiescent current of only 45µA when no load is present, and features a low output noise of 100µVRMS, ensuring a quiet and efficient operation. Additionally, it also provides a high power-supply rejection ratio (PSRR) of 60dB at 1kHz. To accommodate various usage conditions, the FAN2564 comes with controlled inrush current (less than 500mA), a swift 100µs startup time, and is built to be stable with small ceramic capacitors as compact as the 0402 case size.

For energy-saving purposes, the FAN2564 incorporates an enable pin to activate a shutdown mode, wherein the operating current drops to a negligible 10nA. This feature, combined with its provisions for thermal and short-circuit protections, ensure both safety and longevity of the application it powers.

Product Availability

The FAN2564 LDO comes in two space-efficient packages to suit various design needs: a 4-bump, 0.5mm pitch, wafer-level chip-scale package (WLCSP), and a 6-lead, 2 x 2mm, ultra-thin molded leadless package (UMLP). Both package types are offered within a temperature range of -40 to 85°C, ideal for operating in challenging environmental conditions.

Ordering Information

Fairchild Semiconductor provides a range of part numbers for the FAN2564, each specifying different output voltage settings. These parts are listed with their corresponding output voltages, temperature ranges, packages, and packing methods, to facilitate the ordering process. For more information or to request other voltage options that may not be listed, customers are encouraged to contact a Fairchild representative directly.

Conclusion

The FAN2564’s functional design, including its low input voltage, minimum power consumption, and usage flexibility, make it an exemplary LDO for digital applications. Detailed ordering information and a block diagram of its internal structure are readily accessible in the datasheet to guide potential users in their selection process.