MAX1508YETA+T

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The MAX1508YETA+T is a low-quiescent current pulse width modulation (PWM) battery charger ideal for portable applications. With a simple design and intuitive control, the MAX1508YETA+T offers a 100kHz switching frequency combined with a programmable undervoltage lockout ensuring a compact power solution. Integrating a voltage regulation loop with rate of charge optimization capability, the MAX1508YETA+T is perfect for applications such as low-cost medical, consumer, industrial, and automotive battery chargers.

The MAX1508YETA+T works by first monitoring the battery voltage then charging its capacitor with a constant current. When the battery voltage reaches the float voltage, the charger switches to a low-quiescent current PWM mode and the capacitor is slowly discharged until the battery voltage drops below the target-value. The voltage regulation loop optimizes charging performance to ensure rapid and ultimately safe battery charging. An integrated circle of protection (COP) also helps protect against damage caused by reverse-charging.

The MAX1508YETA+T includes all of the features needed to perform an efficient, yet highly reliable, battery charging. These features include an integrated sense diode that helps to minimize charge-time variation, protection features such as current regulation and thermal overload protection, a voltage clipper system and a power-management circuit that allow the charge cycle to be done in different modes. The MAX1508YETA+T also provides a frequency shift and dynamic minimum current regulation that enable precise power control.

The MAX1508YETA+T also includes a high-side N-channel MOSFET, which helps to reduce external component count. The MOSFET utilizes a three-phase architecture which further reduces switch-on time and eliminates issues like overshoot and ringing. With its programmable undervoltage lockout and the dynamic current regulation, the MAX1508YETA+T provides greater protection against over-discharge in applications that use a lead-acid battery.

Overall, the MAX1508YETA+T offers an efficient and compact solution for battery charging. With its integrated performance features and the dynamic current regulation, it helps to optimize charging performance and prevents any damage caused by over-discharge. With its three-phase architecture and programmable undervoltage lock-out, the MAX1508YETA+T provides a power-packed solution ideal for applications needing reliable and affordable battery charging.

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