ETA3555 Datasheet | ETA

DESCRIPTION The ETA3555 is a high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to 5A of pulse load. It integrates an I2C interface that dynamically scales the output voltages on demand. The DCDC control block belongs to a new breed of high frequency synchronous Step-Down converter that bines the advantages of voltage mode control and Constant-On Time control. Its adaptive Constant-On-Time control dynamically changes switch on time to achieve a constant switching frequency. It does not have the minimum ontime constrain normally a fixed-frequency current mode Step-down requires, allowing it to go down to very low duty ratio without affecting loop stability. The voltage mode nature also provides a more superior load transient response and a seamless transition from PFM to PWM modes. Cycle-by-cycle current limit provides output short-circuit protection and an input OVP function guards ETA3555 against possible input voltage surge. ETA3555 is housed in a 2mm x 1.6mm CSP-20 Package. FEATURES - I2C Dynamic Output Control - Synchronous High Efficiency up to 95% - Fast load transient response - Capable of Delivering 5A - Input OVP at 6.2V - No External Schottky Diode Needed - Thermal shutdown and UVLO - CSP-20 (4x5) package APPLICATIONS - ARM based CPUs - Smart Phone - Tablet, MID - Smart Set-Top Box, OTT ORDERING INFORMATION PART ETA3555CSU PACKAGE PIN CSP-20 (4x5) TOP MARK 3555 YWWL ( Date Code) TYPICAL APPLICATION VIN 2.6V to 5.5V AVI N/PV IN EN ETA3555 FB 10u F 10n F VSEL SDA I2C AGND/PGND 0.33u H VOUT 22u F x 2 Typical Application Circuit .etasolution. Powering Minds of the Smart PIN...