SSP9452

The SSP9452 is a monolithic, step-down, switch-mode converter with a built-in power MOSFET. It achieves a 1.0A peak-output current over a wide input supply range. Current-mode operation provides a fast transient response and eases loop stabilization. The wide input range (5V to 40V) provides high efficiency output of 1.0A current. Low shutdown mode quiescent current of 2μA (or less) is suitable for battery-powered applications. High efficiency at light load condition is achieved by scaling down the switching frequency to reduce the switching and gate driving losses. The frequency folding technique helps prevent the inductance current from running out of control at startup. Hot shutdown provides reliable, fault tolerant operation. The SSP9452 is a 1.8MHz, non-synchronous, step-down(buck) regulator with integrated internal high side MOSFET. It provides internally compensated single 1.0A high efficient output. It features wide input voltage range, internal soft-start control, and precision current limit. Low operational quiescent current feature is suit for battery powered applications.

Applications

• High voltage power conversion
• Automotive systems
• Industrial power system
• Distributed power system
• Battery powered system

Key features

• 5V to 40V operating input range
• 500mΩ internal power MOSFET
• 1.8 MHz fixed switching frequency
• Internally compensated
• Stable with ceramic output capacitors
• Internal soft-start
• Precision current limit without current sensing resistor
• >90% efficiency
• 230μA operating quiescent current
• Low shutdown mode current: <2μA
• ESOP8 package