AS3681

austriamicrosystems AS3681 Power & Lighting Management Unit 1 General Description The AS3681 is a highly-integrated, ultra-flexible CMOS Power- and Lighting Management Unit to supply power to LCD- and camera-modules in mobile telephones, and other 1-cell Li+ or 3-cell NIMH powered devices. The AS3681 incorporates one low-power, low-dropout regulator (LDO), one Step Up DC/DC Converter for white backlight LEDs, one high-power Charge Pump for camera flash LEDs, one Analog-to-Digital Converter, support for up to 11 current sinks, a serial interface, and control logic all onto a single die. The linear analog regulator features extremely high analog performance regarding: ! ! ! Product Brief Supports up to 11 Current Sinks - Three Programmable (4-bit) from: 10 to 150mA resp. 300mA - Two Programmable (4-bit) from: 2.5 to 37.5 mA - Three Programmable (4-bit) from: 2.5 to 37.5 mA for RGB LEDs - Three Programmable (4-bit) from: 2.5 to 37.5mA for General Purpose Applications - Programmable Hardware Control (Strobe, PWM) - Selectively Enable/Disable Current Sinks 10-bit Successive Approximation ADC - 11µs Conversion Time - Two Selectable Inputs: GPIO0 and GPIO1 Four General Purpose Inputs/Outputs - Digital Input, Digital Output, and Tristate - Programmable Pull-Up, and Pull-Down - GPIO2 can be used as Camera Flash Strobe Negative or High-Voltage Charge Pump - Regulated Output Voltage, Programmable by Dual Resistors e.g. -6V, 10mA for OLED or ±15V, 5mA for TFT - ± 5% Accuracy - Requires...