ETA ETA1661
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. The adaptive COT control also maintains a constant switching frequency across line and load.| Part No. | ETA1661 |
|---|---|
| Datasheet | ETA1661 Download |
| Manufacturer |  ETA |
| Description | High Efficiency Synchronous Step-Down Converter |
| Buy | Stock & Price |
DESCRIPTION
FEATURES
During light load, ETA1661 goes into a PFM mode that saves switching loss achieving high efficiency. 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 10uF Cin 100nF 100nF 4 BST 1 VIN SW 2 ETA1661 5 EN FB 6 GND 3 2.2uH Cff 47pF R1 optional 30K R2 6.8K OUTPUT 3.3V Cout 2*22uF ORDERING INFORMATION PART No. ETA1661FSG PACKAGE FCSOT563 TOP MARK UDYW Pcs/Reel 5000 1 Empowering Thinkers ETA1661 PIN CONFIGURATION VIN 1 SW 2 GND 3 ETA1661 SOT563 6 FB 5 EN 4 BST
ABSOLUTE MAXIMUM RATINGS
(Note: Exceeding these limits may damage the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.) IN, SW, EN Voltage …………...............–0.3V to 19V BST Voltage......
