AT9933LG-G Integrated Circuits (ICs)

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AT9933LG-G is a powerful power management integrated circuit (PMIC), specifically designed as a LED driver. It features an adjustable current source to drive both high-power and small-power LED applications, as well as fast dynamic control of the LED current using pulse-width modulation (PWM). The AT9933LG-G is a robust and cost-effective solution for LED drivers and supplies in portable electronics and automotive applications.

The AT9933LG-G is designed to provide a high-efficiency, constant-current driving of LEDs from a single supply. The output current is adjustable via a voltage command to the device. Operating from a 2.7V to 5.5V supply voltage, the device can support up to 6 LEDs when used as an LED driver for automotive or portable applications. It also has integrated ESD protection and over-temperature protection for robust operation.

The AT9933LG-G offers a wide range of current values from 40mA to 320mA. The output current is adjusted via the IN pin with a range from 0.6V to 4V while the maximum output voltage is 100V. The device also features a high accuracy current regulation of 0.2%. The switching frequency of the device is adjustable between 200kHz and 1.2MHz and is factory-trimmed to 1MHz.

To ensure a high efficiency and prevent acoustic noise, the AT9933LG-G features an internal PWM ramp generator. This PWM generator enables the device to control both dimming and blinking of the LEDs. The dimming range is adjustable from 0.2% to 100%. The device also features a thermal protection system that shuts down the device when the die temperature exceeds its recommended operating limits.

In addition, the AT9933LG-G provides programmable under-voltage detection and independent power NVLD for blinking functions. The under-voltage detection prevents the device from operating outside of its rated operating range. The NVLD input provides an independent power supply for the blinking functions, further reducing power consumption.

The AT9933LG-G is available in a 9-bump WLP package. It is designed to meet AEC-Q100 Grade 2 requirements, making it suitable for automotive applications. The device is suitable for a wide variety of LED applications such as automotive interior and exterior lighting, portable electronics, wireless devices, medical devices, and more.

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