LTC3331IUH#PBF

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The LTC3331IUH#PBF is a power management integrated circuit (PMIC) specifically designed for single-cell Li-ion battery applications. This device combines a low dropout (LDO) regulator with battery charging and monitoring circuits and a real-time clock, providing a cost- and size-efficient solution for battery-based power management applications. It has been designed specifically for portable and handheld products that require extended battery life and accurate battery monitoring.

The LTC3331IUH#PBF integrates a 100mA low dropout (LDO) regulator, thermal protection, and several analog and digital specifications needed to ensure greater accuracy in battery charging and monitoring. The LTC3331IUH#PBF is optimized for single cell Li-ion batteries and features a wide range of operating conditions, from 1.5V to 5.5V. This device also improves battery charging reliability by including over-voltage protection, over-current protection and short-circuit protection for both inputs and outputs.

The LTC3331IUH#PBF includes a charge current monitoring circuit, which allows for accurate battery charge current measurement and provides an alert signal when the battery is being overcharged. In addition, the device also features a GPIO pin to enable control of one or more external power supply paths such as a wireless charging coil or a voltage regulator such as a boost converter. This GPIO pin also serves to enable an integrated current monitoring system.

The battery charger and monitoring circuit of the LTC3331IUH#PBF supports charging currents up to 1A and battery capacity up to 2Ah. In order to minimize the standby current consumption, the device includes a programmable power save mode and a low power charging mode. The device also contains a low power oscillator, which can be used to create a short duration sleep interval or a longer duration deep sleep interval. During a sleep interval, the charges can be monitored while consuming very low power.

The LTC3331IUH#PBF also offers a real-time clock, which can be used to support time-stamped battery charge logs and event logging of various system parameters. The clock can remain active even when the V_BCUP and the V_BCDN pins are powered down.

In addition to these features, the LTC3331IUH#PBF is designed to be compatible with a wide range of power supply architectures, such as wall adapters, USB ports, wired or wireless charging systems and other voltage sources. In wireless charging systems, the LTC3331IUH#PBF can be used as the primary power source or as a regulator for a secondary power source.

The LTC3331IUH#PBF provides a variety of features and a cost-effective solution for single cell Li-ion battery powered applications. The device\'s integrated features and flexible power management capabilities make it suitable for an array of applications, such as portable medical and consumer devices, wearables, cell phones, rugged tablet PCs and automotive systems.

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