ETA3409S2F

The ETA3409 is a high - efficiency, DC - to - DC step - down switching regulator capable of delivering up to 3A of output current. The devices operate from an input voltage range of 2.4V to 7.3V and provide output voltages from 0.6V to VIN, making the ETA3409 ideal for low voltage power conversions. Running at a fixed frequency of 1MHz allows the use of small inductance value and low DCR inductors, thereby achieving higher effciencies. Other external components, such as ceramic input and output caps, can also be small due to higher switching frequency, while maintaining exceptional low noise output voltages. Internal soft - start control circuitry reduces inrush current. Short - circuit and thermal - overload protection improves design reliability. ETA3409 is housed in a tiny SOT23 - 5L package. The ETA3409 high - efficiency switching regulator is a small simple, DC - to - DC step - down converter capable of delivering up to 3A of output current. The device operates in pulse - width modulation (PWM) at 1MHz from a 2.4V to 7.3V input voltage and provides an output voltage from 0.6V to VIN, making the ETA3409 ideal for on - board post - regulation applications. An internal synchronous rectifier improves effciency and eliminates the typical Schottky free - wheeling diode. Using the on resistance of the internal high - side MOSFET to sense switching currents eliminates current - sense resistors, further improving efficiency and cost.

Applications

• Set - Top - Box
• IP camera
• Telecom Devces

Key features

• Wide Input Voltage Range: 2.4 - 7.3V
• Standby Current 42uA (Vout = 1.2V, Iout = 0A)
• Up to 96% Efficiency
• Up to 3A Max Output Current
• 1MHz Frequency
• Light Load operation
• Internal Compensation
• Tiny SOT23 - 5 Package