MAX14593EEWV+T

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The MAX14593EEWV+T is an advanced charging manager designed specifically to charge single-cell Li-ion/Li-polymer batteries used in wearable and portable electronic devices. The device is offered in a 2.5mm x 3.0mm wafer-level chip-scale package and includes four key power regulated charging and discharging functions that are required for a safe, featured and high-efficiency Li-ion/Li-polymer based solution. The four key functions are charger, discharger, Watch Dog Timer (WDT) and a low-battery detector (LBD).

In terms of application field, the MAX14593EEWV+T is specifically designed for wearable and portable electronic devices. The device operates on a wide input voltage range of 2.7V to 6.5V and can charge single-cell 2.5V to 4.1V Li-ion/Li-polymer batteries up to a maximum charge current of 1A. The charge current is programmable via an external resistor, allowing designers to optimize power profiles for a variety of battery chemistries and sizes. The device also offers a charge current preconditioning feature to maximize battery life, and uses C/10 detection for reliable charging. The device includes an integrated clock divider to generate a programmable timer as well as a WDT to protect the battery from overcharge, overtemperature, and other unsafe conditions.

As for working principle, the MAX14593EEWV+T operates by using constant-voltage (CV) charging with charge termination via C/10 detection. A programmable timer is used to control the charge current, preventing overcharging the battery and thus maximizing the battery life. The charge termination occurs when the battery voltage reaches a preset level proportional to the current set by the timer. The MAX14593EEWV+T also features a dynamic battery capacity adjuster that can increase or decrease the charge current according to the sensed battery capacity in order to ensure an optimized charging profile. In addition, the device features a regulated input current limit and programmable soft-start to minimize the instantaneous battery INA current.

The MAX14593EEWV+T also includes a low-battery detector that can detect battery voltage levels of 3.2V or higher to detect low battery conditions. The detector can be programmable via an external resistor and also offers adjustable voltage thresholds to customize the voltage levels for applications that require different voltage thresholds. Lastly, the device includes an ESD and short-circuit protected battery output.

In conclusion, being a member of the PMIC - Battery Chargers, the MAX14593EEWV+T is specifically designed for wearable and portable electronic devices and is equipped with four key charging and discharging functions: a charger, discharger, Watch Dog Timer (WDT) and a Low-battery Detector (LBD). It utilizes features such as constant-voltage charging with charge termination via C/10 detection as well as a programmable timer and dynamic battery capacity adjuster to ensure an optimized charging profile. It also features a regulated input current limit, programmable soft-start, and an ESD and short-circuit protected battery output. All these features collectively make the MAX14593EEWV+T an ideal charging manager for wearable and portable electronic devices.

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