ETA ETA1477
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. The adaptive COT control also maintains a constant switching frequency across line and load.| Part No. | ETA1477 |
|---|---|
| Datasheet | ETA1477 Download |
| Manufacturer |  ETA |
| Description | High Efficiency Synchronous Step-Down Converter |
| Buy | Stock & Price |
DESCRIPTION
During light load, ETA1477 goes into a PFM mode that saves switching loss achieving high efficiency. 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 177uA
● Low Rdson Internal Power FETs
● Capable of Delivering 2A
● No External Compensation Needed
● Thermal Shutdown and UVLO
● Available in SOT23-6 Package
APPLICATIONS
● LCD TV● Set Top Box
● xDSL Modem TYPICAL APPLICATION 10nF 6 BST VIN 3 IN SW 2 10 uF ETA1477 EN 5 EN FB 4 GND 1 2.2uH R1 47 pF optional 22 uFx2 VOUT R2 R1+R2 Vout= R2 ×0.768 (V) ORDERING INFORMATION PART No. ETA1477S2G PACKAGE TOP MARK Pcs/Reel SOT23-6 JBYW 3000 1 Empower, Transcend, Achieve! ETA1477 PIN CONFIGURATION GND 1 SW 2 VIN 3 ETA1477 6 BST 5 EN 4 FB SOT23-6
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 24V BST Voltage .............
