The A7406A is a high frequency (1.8 MHz) step-down switching regulator with integrated internal high-side high voltage power MOSFET. It provides a single 0.6 A (or less) highly efficient output with current mode control for fast loop response. The wide input range(4.2 V to 40 V) accommodates a variety of step-down applications. Low shutdown mode quiescent current allows use in battery-powered applications.
High efficiency at light load conditions is achieved by scaling down the switching frequency to reduce the switching and gate driving losses.
Key features
- 4.2 V to 40 V operating input range
- 230 µA operating quiescent current.
- Low shutdown supply current
- 500 mΩ internal power MOSFET
- 1.8 MHz fixed switching frequency
- >90% efficiency
- Internally compensated
- Stable with ceramic output capacitors
- Internal soft-start
- Thermal shutdown function
- Precision current limit without current sensing resistor
- Available in SOT-26 Package
Key applications
- High voltage power conversion
- Industrial power systems
- Power meter
- Battery-powered systems
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