LTC4065LEDC#TRMPBF

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The LTC4065LEDC#TRMPBF is a low-dropout single-cell battery charger suitable for many portable devices such as smartphones, tablets, and other portable battery-operated devices. The device operates over a wide input voltage range of 2.6 V to 15 V. It has an integrated logic level LED indicator that provides a diagnostic output for battery charging and overvoltage/overcurrent protection.

The LTC4065LEDC#TRMPBF is part of the LTC4065 family of low-dropout battery chargers developed by Linear Technology. The family of chargers are designed to feature low-frequency, low-dropout linear charging as opposed to switching power supply type chargers. Low-dropout battery chargers make use of an input voltage that is just slightly higher than the battery voltage to power the circuit. This allows the battery to charge at a slow and more efficient rate than a typical switch-mode charging technology.

One feature of the LTC4065LEDC#TRMPBF is that it does not need an external synchronous rectifier, allowing it to offer a low-cost, low-power solution. The device utilizes Linear Technology’s proprietary advanced pass-through technology that allows the input voltage to automatically adjust itself to the battery’s charge current to significantly improve charge accuracy. The charger can quickly detect battery status, correct for reverse current, and accurately adjust the charging rate for long battery life. The charge rate can be adjusted by changing a single resistor value.

The device’s integrated logic-level LED indicator displays the charge status, via a low-beam output, when the battery is completely charged, near-complete, or if an overcurrent/overtemperature condition is detected. This feature is useful in designing user interfaces, battery status monitor displays, or other applications.

The LTC4065LEDC#TRMPBF is housed in a small QFN package and weighs in at only 7.5mmx10mm, which makes it ideal for small-form-factor portable consumer electronics designs. It is further enhanced by the fact that it does not require an external power inductor, making the design even simpler. The battery charger is available in an ultra-small 4-by-4-mm QFN package, making it suitable for space-constrained applications.

In conclusion, the LTC4065LEDC#TRMPBF is an industry-leading, low-dropout, single-cell battery charger designed for ultra-small portable consumer electronics applications. Its integrated logic-level LED indicator allow designers to easily monitor the charge state of the battery, and its low-noise, low-dropout performance will join the user experience in applications where power conservation is key.

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