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6V/3.5A, Fast Response, Adaptive COT Step-Down Converter in Tiny DFN2x2.
ETA3451D2I ETA3451D2I.pdf

No.10554

FEATURES

Adaptive COT control

Up to 95% Efficiency

Up to 91% Efficiency for low output voltage

Up to 3.5A Max Output current

Feedback voltage 0.45V

Excellent load transient response

DFN2X2-8L Package

DESCRIPTION

ETA3451 belongs to a new breed of high frequency synchronous Step-Down converters that combines 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 on-time 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 of ETA3451 also provides more superior load transient response and a seamless transition from PFM to PWM modes. ETA3451 is capable of supplying output with current up to 3.5A at 1.2V output. All these features make ETA3451 an excellent choice for ARM based CPU power supply.

ETA3451 is in a tiny DFN2x2-8L package.

APPLICATION CIRCUIT
PIN CONFIGUTION
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