FAN2512, FAN2513 150 mA CMOS LDO Regulators with Fast Start Enable

Category: Electronics, Fairchild Semiconductor, Regulators

Summary of the FAN2512 and FAN2513 LDO Regulators

The FAN2512 and FAN2513 from Fairchild Semiconductor are part of a family of micropower low-dropout (LDO) voltage regulators. They utilize CMOS technology to achieve high-efficiency power regulation with ultra-low power consumption, designed primarily for various portable applications such as cellular phones, personal digital assistants (PDAs), portable cameras, video recorders, and computer equipment like laptops and notebooks.

Key Features

The regulators are notable for their small form factor (SOT23-5 package) and low-power demand, featuring a remarkably low dropout voltage of just 150 mV at a full load of 150 mA, and a ground current of 25 uA at 450 mA. Additionally, they incorporate thermal limiting and can handle a peak current of up to 300 mA. One of their distinctive features is the Enable/Shutdown Control, which is said to be optimized for CDMA time phases, providing the swift power-cycle times needed for handsets.

Design and Customization

The FAN2512 and FAN2513 also promote versatility through the adjustable output voltage. For FAN2512, pin 4 (ADJ) allows users to set the output voltage across a broad range by incorporating an external voltage divider. On the other hand, for FAN2513, pin 4 (ERR) acts as a fault flag indicating an output voltage drop below the specified minimum threshold. The series also includes fixed voltage options, with standard outputs provided at 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, and 3.3V. Versions of these devices with a fixed output voltage are designated by the suffix “XX”, indicating the specific output voltage level, and for lower noise performance, a bypass capacitor can be connected to FAN2S12-XX at pin 4 (BYP).

Applications

These regulators are designed for a broad range of electronic devices, ensuring applicability in modern essential technologies that require reliable power management solutions. The fact that they are pin-compatible with many popular devices ensures ease of integration and replacement in existing and new designs, respectively. They are a logical choice for electronic products requiring efficient power management and minimal design realignment. Furthermore, custom output voltages can be tailored to specific needs upon contacting Fairchild’s sales offices.

Summary Conclusion

In conclusion, the FAN2512 and FAN2513 series represent a technological advancement in the domain of power regulation for portable devices, with a special emphasis on cellular technology’s power cycling demands. They provide a reliable and adaptable solution in the increasingly power-conscious and space-limited contexts of modern electronics. The datasheet was revised on May 25, 2004, as identified by the notation “REV. 1.1.8”.