LT1579CGN-3#PBF

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Power management integrated circuits (PMICs) have been in use for decades, and have become increasingly important as electronics have become more powerful and power demands have increased. Battery management systems are a specific application of PMICs and have gained a great deal of attention in recent years with the rise of portable devices. The LT1579CGN-3#PBF is a battery management IC from linear technology, and is optimized to serve as the primary power supply for hand-held and high-performance audio equipment.

The LT1579CGN-3#PBF is a low noise, low-dropout regulator designed for use in portable battery-powered devices operating from a single Li-Ion, Li-Po, or alkaline cell. It is capable of providing an adjustable output voltage of up to 4.5V, and can operate in either a linear or "switch" mode. In linear mode, the device can provide an output current of up to 250mA. It can also be configured to switch to a "low power" mode when the output current drops below a certain threshold, thereby increasing efficiency. The regulator also features an undervoltage lockout, which prevents it from operating until the input voltage reaches a predetermined level. It also has a thermal shutdown feature, which shuts down the regulator if the die temperature exceeds a set value.

One of the major advantages of the LT1579CGN-3#PBF is its EMI (electromagnetic interference) performance. The device is designed to minimize EMI in both the passband (input to output) and stopband (input to output via the inductor) of the regulator. This is done through careful selection of the on-chip capacitances and inductance values, and through the use of external ferrite beads and/or capacitors to reduce voltage ringing. This contributes to a low noise level, which is important in audio applications, and improves system performance.

The LT1579CGN-3#PBF is designed to provide a stable and efficient supply of power to any system, particularly those operating from a single cell Li-Ion, Li-Po, or alkaline battery. Its low noise operation, EMI optimization, and undervoltage and thermal shutdown features make it an ideal choice for powering hand-held and high-performance audio equipment. The device also features a wide input voltage range, making it suitable for use in applications from 5V to 16V.

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