LT8610IMSE#PBF

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LT8610IMSE#PBF is a monolithic synchronous buck converter designed to deliver a load up to 3A from a single cell Li-Ion battery or from an unregulated 3.6V to 6V supply. It comes in a thermally enhanced 2mm × 2mm QFN 20-pin package and includes a constant-frequency, current-mode control. There is an enable pin to allow for power sequencing or for shutdown of the device when not needed.

The LT8610IMSE#PBF has an available output voltage range operating down to 0.8V, with the output voltage being adjusted with one external resistor. It also has an integrated current-limit function, which protects the converter from overload during a short circuit or heavy load transients. The device is designed to be stable with small ceramic output capacitors, and its logic-level shutdown controls can be used to disable the converter when the system enters standby mode.

The LT8610IMSE#PBF is designed to meet the need of applications requiring high efficiency and wide output range such as MP3 players, digital still cameras, and cell phones. The device can also be used in other general-purpose power supply designs such as portable instrumentation, computer peripherals, and battery chargers that require an adjustable output range and low noise performance.

Application Field of LT8610IMSE#PBF

The LT8610IMSE#PBF is suitable for a wide range of applications which require a low drop-out, wide input voltage range and low output voltage and high efficiency such as portable instrumentation, computer peripherals, battery chargers, digital still and video cameras, cellular phones, and other consumer electronics.

Working Principle

The LT8610IMSE#PBF operates as a synchronous buck converter with an integrated current-mode PWM control scheme and features a wide input voltage range, low quiescent current, low drop-out voltage and an adjustable output voltage. It also offers a wide load current range and high efficiency over a wide input voltage range. The converter employs a two-phase operation in order to reduce the switching losses. The converter is externally adjustable with one resistor from 0.8V to 6V and is capable of delivering up to 3A.

The device includes several protection circuits which help prevent damage to the system in the event of an overload or short circuit conditions. It uses a dynamic over-voltage protection (OVP) to prevent over-voltage conditions on the output, an under-voltage protection (UVP) to prevent under-voltage conditions and a thermal shutdown (TSD) to protect the device from overheating. Additionally, an enable pin allows the converter to be shut down when not needed.

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