EV-101 Datasheet | ANALOGICTECH

features a fast 500ns turn- Smart Switch™ on time. The switch states are controlled by the Simple Serial Control™ (S2Cwire™) serial digital interface. The quiescent supply current is very low, typically 5µA. In shutdown mode, the supply current is reduced to less than 1µA. Using RGB LEDs to generate various colors presents unique challenges. Among them is a requirement to pulse width modulate (PWM) three independent LED currents to accurately control the brightness for each LED color. The AAT4291 is well suited for this. Using only one GPIO pin from the system processor, a high PWM rate can be achieved with plete brightness control for each LED. The following material describes the hardware and software platform used to generate many colors of light from RGB LEDs. In addition to this literature, the reader is encouraged to also consult the AAT4290/4291 product datasheet. .. Schematic U1 1 2 3 4 C2 10µF VOUT C+ GND VIN GND CGND SHDN AAT3110-4.5 8 7 6 5 C3 1 µF U2 1 2 R6 VIN J1 VIN GND 2 1 3 4 100K C1 10µF IN OUT3 NC OUT2 OUT1 NC EN/SET GND ATT4291 8 7 6 5 R9 60.4 VIN C4 10µF R8 249 R7 249 R10 60.4 R11 249 R12 249 C6 0.1µF U3 R1 1K R2 1K R3 1K R4 1K R5 1K 1 2 3 4 S1 S2 S3 S4 S5 VDD GP5 GP4 GP3 PIC12C671 VSS GP0 GP1 GP2 8 7 6 5 D1R RED 1 1615 SMD D1G GREEN D1B BLUE D2R RED D2G GREEN 1 D2B BLUE 1615 SMD Figure 1: Evaluation Board...