LTC1436IGN-PLL: Dual, Low Noise, PLL Synchronous Step-Down DC/DC Controller

The LTC1436IGN-PLL, manufactured by Linear Technology, is a high-performance, dual-channel synchronous step-down DC/DC controller that incorporates a Phase-Locked Loop (PLL) for noise-sensitive applications. This device is designed to provide precise voltage regulation and low output ripple, making it an ideal solution for powering noise-sensitive circuits such as RF transceivers, FPGA cores, and high-speed digital processors.

Featuring a wide input voltage range from 4.5V to 36V, the LTC1436IGN-PLL is versatile and can be used in a variety of systems, including automotive, industrial, and telecommunications equipment. The dual-channel architecture allows for two independent output voltages, which can be set from 0.8V to VIN with a high level of accuracy due to its 0.8% reference voltage accuracy over the full temperature range.

The PLL function of the LTC1436IGN-PLL ensures that the switching frequency of the converter can be locked to an external clock, which minimizes interference with sensitive frequency bands and allows for noise-sensitive applications to operate with reduced electromagnetic interference (EMI). The operating frequency is selectable from 50kHz to 500kHz, allowing designers to optimize efficiency and component size.

Additional features of the LTC1436IGN-PLL include a powerful 1.25A onboard gate drivers, which can drive large MOSFETs for high current applications. The device also offers current mode control for fast transient response and excellent loop stability. Moreover, it has a range of protective features such as overvoltage protection, undervoltage lockout, and thermal shutdown to ensure safe operation under various conditions.

For ease of use, the LTC1436IGN-PLL is available in a 28-lead SSOP package, which is compact and suitable for space-constrained applications. Its robust design and comprehensive feature set make it a reliable choice for designers seeking to create efficient, low-noise power supply systems.

In summary, the LTC1436IGN-PLL from Linear Technology is a sophisticated, dual-channel synchronous step-down controller that integrates a PLL for reduced noise and EMI, making it perfect for high-performance, sensitive electronic systems.