ETA1477
ETA1477 is High Efficiency Synchronous Step-Down Converter manufactured by ETA.
18V/2A, High Efficiency Synchronous Step-Down Converter in SOT23-6
DESCRIPTION
ETA1477 is a wide input range, high-efficiency and high frequency DC-to-DC step-down switching regulator, 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, ETA1477 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.
ETA1477 is available in SOT23-6 package.
Features
- Wide Input Range: 4.5V-18V
- Adaptive COT Control
- Ultra-fast Load Transient Response
- High Efficiency PFM Mode at Light Load
- High Efficiency Synchronous Operation
- No Load IQ 177u A
- Low Rdson Internal Power FETs
- Capable of Delivering 2A
- No External pensation Needed
- Thermal Shutdown and UVLO
- Available in SOT23-6 Package
APPLICATIONS
- LCD TV
- Set Top Box
- x DSL Modem
TYPICAL APPLICATION
10n F
3 IN
SW 2
10 u F
5 EN
FB 4
2.2u H R1
47 p F optional
22 u...
