Specifications2-Output Step-Down Converters:Channel 1 (Buck): VIN1 = 6.0 to 24.0VVOUT1 Adjustable from 0.8V to 5.5VIOUT1 up to 4.5AHigh Switching FrequencyVoltage Mode ControlHigh Accuracy ±1.5%PWM Fixed Frequency for Low RippleChannel 2 (LDO): VIN2 = 2.7V to 5.5VIOUT2 up to 600mA1V Dropout V...
AAT2688: Specifications2-Output Step-Down Converters:Channel 1 (Buck): VIN1 = 6.0 to 24.0VVOUT1 Adjustable from 0.8V to 5.5VIOUT1 up to 4.5AHigh Switching FrequencyVoltage Mode ControlHigh Accuracy ±1.5...
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The AAT2688 provides two independently regulated DC outputs: a high voltage synchronous step-down (Buck) regulator and a low input voltage step-down 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 regulator with an input voltage range of 6.0V to 24V, providing up to 4.5A 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 low output noise, low quiescent current, and excellent transient response. The step-down regulator includes integrated over-current, soft-start and over-temperature protection. Independent input and enable pins provide maximum design flexibility.
The AAT2688 is available in the Pb-free 4mm x 5mm 24-pin TQFN package. The rated operating temperature range is -40C to 85C.