AAT2689IRN-AI-T1

PRODUCT DATASHEET AAT2689 SystemPowerTM PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters General Description The AAT2689 provides two independently regulated DC outputs, consisting of a high voltage step-down (Buck) regulator and a low input voltage low dropout (LDO) regulator. The PMIC is optimized for low cost 12V adapter inputs, making the device the ideal system-on-a-chip power solution for consumer communications equipment. Channel 1 is a step-down (Buck) regulator with an input voltage range of 6V to 24V providing up to 2500mA output current. 490kHz fixed switching frequency allows small L/C filtering components. Channel 1 utilizes voltage mode control configured for optimum performance across the entire output voltage and load range. Channel 2 is a low-dropout (LDO) regulator providing up to 600mA output current. The device provides extremely low output noise, low quiescent current and excellent transient response. The controller includes integrated cycle-by-cycle overcurrent protection, soft-start and over-temperature disable features. Independent input and enable pins provide maximum design flexibility. The AAT2689 is available in the Pb-free 3x4mm 16-pin TDFN package. The rated operating temperature range is -40°C to 85°C. Features • 2-Output Step-Down Converters: ▪ Channel 1 (Buck): VIN1 = 6V to 24V • VOUT1 adjustable from 1.5V to 5.5V • IOUT1 up to 2.5A • High Switching Frequency • Voltage Mode Control • PWM Fixed Frequency for Low-Ripple ▪ Channel 2 (LDO): VIN2 = 2.7V to 5.5V • IOUT2 up to 600mA • 1V Dropout Voltage at 600mA • High Accuracy ±1.5% • Small Solution Size ▪ System on a Chip ▪ Ultra-small External L/C • Shutdown Current