MC33340DR2G

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The MC33340DR2G is an advanced, highly efficient, and low-cost current-limited and programmable pulse width modulation (PWM) battery charger controller. It provides a quick, easy, and safe way of charging batteries. This highly integrated device is suitable for a wide range of battery charging applications and is ideal for use in consumer, industrial, automotive and medical chargers as well as portable electronic products.

Application Field

The most commonly used application for the MC33340DR2G is fast charging of lead-acid batteries, such as those used in automotive applications. It is also frequently used to charge lithium-ion batteries found in consumer electronics, such as laptops and mobile phones. This charger controller is also compatible with NiCd, NiMH, and other rechargeable chemistries.

The MC33340DR2G supports charge current levels ranging from 1A to 4A and is compatible with conventional transformer-based chargers and with higher power switch-mode power supplies. The device also offers a wide input voltage range, making it suitable for a variety of applications. Additional features, such as internal protection circuits, enable the MC33340DR2G to provide excellent reliability and safety when charging batteries.

Working Principle

The MC33340DR2G operates by using an internal PWM comparator to control the output voltage to the battery. The PWM comparator is configured to limit the peak current to the battery, providing maximum safety and prevention from overcharging. The peak current can be programmed using an external resistor.

The MC33340DR2G also provides an internal temperature compensation circuit to compensate for the reduced capacity of a battery at colder temperatures. This circuitry actively monitors the battery temperature, and if it falls below a programmed threshold, it increases the peak current limit. This ensures the battery is not damaged by excessive charge current while still being able to charge quickly when temperatures rise again.

The MC33340DR2G also offers several other useful features, such as short circuit protection, soft start and auto-recharge. These additional features add to the convenience and safety of the device, allowing it to be used in a wide range of applications.

Conclusion

The MC33340DR2G is a highly integrated battery charger controller designed for fast and safe charging of batteries. It is suitable for a wide range of chemistries, including lead-acid, NiCd, NiMH, and lithium-ion. In addition, the charger features programmable peak current, temperature compensation, short circuit protection, soft start, and auto-recharge functions. These features make the MC33340DR2G an ideal battery charger for a variety of applications, such as automotive, industrial, consumer, and medical.

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