ETA8291 Datasheet | ETA

DESCRIPTION ETA8291 is a Power Management Unit(PMU) with 2 channels of wide input range, high efficiency DC-to-DC step-down switching regulators. Each channel is capable of delivering up to 2A of output current. It adopts an adaptive COT control scheme that enables very fast transient response and provides a very smooth transition when the output varies from light load to heavy load. During light load, ETA8291 goes into a PFM mode that saves switching loss to achieve high efficiency. The adaptive COT control also maintains a constant switching frequency across line and load. ETA8291 is available in DFN3x3-10 package. FEATURES - Wide Input Range: 3.5V-18V - Dual 2A Max Output Current - Adaptive COT Control - Ultra-fast Load Transient Response - High Efficiency PFM mode at Light Load - High Efficiency Synchronous Operation - Low Rdson Internal Power FETs - No External pensation Needed - Thermal Shutdown and UVLO - Ro HS pliant APPLICATIONS - Set Top Box - x DSL Modem - LCD TV TYPICAL APPLICATION VIN1 3 VIN1 10n F BST1 1 2.2u H VOUT1= Ru1+Rd1 Rd1 x 0.6V SW1 2 VOUT1 10u F Ru1 47p F optional 22u F EN1 9 EN1 ETA8291 FB1 10 10n F Rd1 VIN2 8 VIN2 BST2 6 10u F 2.2u...