Product Details
●The ADP8863 combines a powerful charge pump driver with advanced autonomous LED lighting features. It allows as many as seven LEDs to be independently driven up to 30 mA (maximum). The seventh LED can be also driven to 60 mA (maximum). All LEDs are programmable for maximum current and fade in/out times via the I2C interface.
●Additionally, automated blinking routines can be independently programmed and enabled for all seventh LED channels. These LEDs can also be combined into groups to reduce the processor instructions. Driving this entire configuration is a two-capacitor charge pump with gains of 1×, 1.5×, and 2×. This setup is capable of driving a maximum IOUT of 240 mA from a supply of 2.5 V to 5.5 V. The device includes a variety of safety features including shortcircuit, overvoltage, and overtemperature protection. These features allow easy implementation of a safe and robust design. Additionally, input inrush currents are limited via an integrated soft start combined with controlled input to output isolation.
●The ADP8863 is available in a compact LFCSP (lead frame chip scale package).
●### Features and Benefits
● Automated blinking and funlight timing for each LED driver
● 16 programmable fade in and fade out times: 0.1 sec to 5.5 sec; Selectable linear, square, or cubic fade rates
● 7 independent and programmable LED drivers: 7 drivers capable of 30 mA (maximum); 1 driver also capable of 60 mA (maximum)
● Programmable maximum current limit (128 levels)
● Separate and independent controls for backlight LEDs
● Backlight fade override
● Up to two built-in comparator inputs with programmable modes for ambient light sensing
● Charge pump with automatic gain selection of 1x, 1.5x, and 2x for maximum efficiency
● Standby mode for <1 μA current consumption
● I2C-compatible interface for all programming
● Dedicated reset pin and built-in power-on reset (POR)
● Short-circuit, overvoltage, and overtemperature protection
● Internal soft start to limit inrush currents
● Input-to-output isolation during faults or shutdown
● Operation down to VIN = 2.5 V with undervoltage lockout (UVLO) at VIN = 2.0 V
● Small lead frame chip scale package (LFCSP)
