ETA1661 Datasheet | ETA

DESCRIPTION FEATURES ETA1661 is a wide input range, high efficiency and high frequency DC to DC step-down switching regulator, capable of delivering up to 4A 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, ETA1661 goes into a PFM mode that saves switching loss achieving high efficiency. The adaptive COT control also maintains a constant switching frequency across line and load. An OVP function protects the IC itself and its downstream system against input voltage surges. ETA1661 is available in a tiny SOT563 package. - Wide Input Range: 4.5V-18V - Adaptive COT Control - Ultra-Fast Load Transient Response - High Efficiency PFM Mode at Light Load - Low Rdson Internal Power FETs - Capable of Delivering up to 4A - Thermal Shutdown and UVLO - Available in SOT563 APPLICATIONS - 5G CPE - Set Top Box - LCD TV TYPICAL APPLICATION INPUT 12V Cin ENABLE INPUT 10u F Cin 100n F 100n F 1 VIN SW 2 5 EN FB 6 2.2u H Cff 47p F R1 optional 30K R2 6.8K OUTPUT 3.3V Cout 2- 22u F ORDERING INFORMATION PART No. ETA1661FSG PACKAGE FCSOT563 TOP MARK UDYW Pcs/Reel 5000 .etasolution. Empowering Thinkers PIN...