FAN1616AD18X

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The FAN1616AD18X is a high-performance ultralow dropout (LDO) linear voltage regulator. As part of Fairchild Semiconductor’s PowerTrench family of low-noise, low-power linear voltage regulators, it provides several features for extended application fields and higher system performance. The FAN1616AD18X is a step-down regulator that features integrated power switches, allowing them to efficiently pass current over the full operating load range up to the maximum rated level. This is enhanced by a low quiescent current (typically 8 mA), which saves power in light load applications.

The FAN1616AD18X includes two linear voltage regulator stages: a low dropout (LDO) voltage regulator and a step-down regulator chain, with NFET and PFETs. The two stages are integrated into the same package and provide flexibility over a broad range of input and output voltages. The device also offers enable and trim pins, which allow users to enable or disable the LDO to customize the output voltage. Additionally, the enable and trim pins cause the device to quickly fall into a tri-state mode, allowing the current to sample a lower voltage and stay in regulation, even when the load is in a sleep or idle state.

The FAN1616AD18X also features both current-mode and voltage-mode control, allowing for fast transient response and better accuracy. The current-mode control combines with the low gate capacitances of the integrated PFETs and NFETs to provide a low noise operation and fast response to load changes. The device also includes an internally fixed-frequency current-mode PWM that reduces line and output voltage ripple a factor of two, improving system reliability.

The FAN1616AD18X utilizes a low quiescent current of 8 mA, providing higher efficiency than conventional LDOs. Furthermore, the device offers an integrally double-grounded chip-scale package design that provides improved thermal conditions, reducing thermal noise and improving overall system reliability. The package also allows for a physically small footprint, making it ideal for ultra-compact designs where saving space is essential.

Furthermore, the FAN1616AD18X is available in several different output power ratings, with a maximum output current of 1.5 A and a maximum output power of 6.5 W. The device also provides a wide input voltage range (between 1.5 V and 13 V), a low dropout voltage of just 100 mV, and an operating temperature range of -40°C to +125°C.

To conclude, the FAN1616AD18X is an advanced LDO linear voltage regulator, offering an integrated dual-stage regulator capable of providing both voltage- and current-mode control. It has a low quiescent current and a wide input voltage range, making it suitable for a variety of applications. Its small footprint and improved thermal efficiency further enhance its utility in space-constrained designs.

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