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The SSP9459 is a monolithic, step-down, switch-mode converter with a built-in power MOSFET. It achieves a 0.5A peak-output current over a wide input supply range with excellent load and line regulation. Current-mode operation provides a fast transient response and eases loop stabilization. The wide input range(4.5V to 60V) provides high efficiency output of 0.5A current, Low shutdown mode quiescent current of 0.1μA is suitable for battery-powered applications. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown.

Features

• Output 0.5A peak current
• 5V to60 V operating input range
• 1Ω internal power MOSFET
• 480KHz fixed switching frequency
• Stable with Low-ESR Ceramic OutputCapacitors
• Cycle-by-Cycle Over-Current Protection
• Thermal shutdown protection
• >90% efficiency
• Output voltage: adjustable from +0.81V to 0.95Vin
• Low shutdown mode current：<1μA
• SOT23-6package

Application

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