LT6654AHS6-2.048#TRMPBF

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The LT6654AHS6-2.048#TRMPBF (LT6654AHS6) is a voltage reference that is within the low-dropout voltage regulator (LDO) Family of power management integrated circuits (PMICs) produced by Linear Technology. This voltage reference is directly after its parent company’s LT6657AHS6 low-dropout regulator and boasts of better accuracy and performance in a lower temperature range.

The LT6654AHS6 is a low-dropout, high-accuracy voltage reference available with an output voltage range of 1.3V to 4.2V. The device has an adjustable latch-off current limit with a typical 1.5 A limit while the device itself has a minimum operating current of 2mA and a maximum operating current of 40mA. The inrush current of the device is lower than the available 1.5 A limiting current, allowing for higher peak current. Additionally, the device allows for a 10% threshold hysteresis, providing greater control over the output current. This hysteresis is enabled by the on-chip size compensated arbitrary voltage private discharge circuits, which enhance the DR/settling time performance.

The LT6654AHS6 features a 0.2% accuracy reference voltage with excellent line and temperature stability, providing accurate and reliable voltage levels in extreme environmental parameters. The device utilizes ultra-low-noise voltage regulation, enhancing the long-term drift stability in noisy conditions while the on-chip deglitched current limiter ensures fast and accurate current limiting recovery.

The LT6654AHS6 is offered in a small surface-mount package and as part of Linear Technologies power solution families, making it an ideal choice for PMIC applications. This voltage reference is also beneficial in battery-powered applications and particularly in BYPASS applications paired with an inductor, as it is better able to handle the high inrush current. Additionally, this voltage reference offer unregulated output voltages well close to the battery voltage, allowing for better efficiency.

The LT6654AHS6 works by taking input from the battery and supplying a regulated output voltage to the external circuit. The device has an adjustable voltage comparator that enables the reference voltage to adjust depending on the output voltage of the external device. Furthermore, the device features a high-precision over-temperature sensing circuit, which enable to be used on extreme temperature settings. The voltage reference is also integrated with an external resistor or polarity protection circuitry to protect against short-circuit or excessive current conditions.

In conclusion, the LT6654AHS6-2.048#TRMPBF is an ideal voltage reference for PMIC applications due its low-dropout voltage regulation, high-accuracy reference voltage, and adjustable current limiter. This voltage reference is offered in a compact surface-mount package and as part of Linear Technologies power solution families making it an ideal choice for battery-powered applications. Additionally, its ultra-low-noise voltage regulation ensures long-term drift stability in noisy conditions and its on-chip deglitch current limiter ensures fast and accurate current limiting recovery.

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