Texas Instruments LED Drivers LM27952SD

The LM27952SD is a white LED driver capable of driving up to four LEDs with a maximum current of 30mA each. It features a regulated current source with a typical matching accuracy of 0.2%. The device operates over an input voltage range of 3.0V to 5.5V and utilizes a fixed switching frequency of 750kHz, optimized for portable applications. The LM27952SD employs a switched capacitor charge pump that can operate in either a 1.5X or 1X gain mode, allowing for efficient LED driving without the need for an inductor. It includes PWM brightness control for each LED and consumes less than 1µA in shutdown mode. The product is housed in a compact 14-pin WSON package measuring 4.0mm x 3.0mm x 0.8mm, making it suitable for space-constrained designs.