AP64350SP-13

AP64350SP-13 is a synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 75mohm high-side power MOSFET and a 45mohm low-side power MOSFET to provide high-efficiency step-down DC-DC conversion. The device is easily used by minimizing the external component count due to its adoption of peak current mode control. The device has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching. AP64350 also features Frequency Spread Spectrum with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. Applications include 5V, 12V, and 24V distributed power bus supplies, power tools and laser printers, white goods and small home appliances, home audio, network systems, consumer electronics, general-purpose point of loads.

• Proprietary gate driver design for best EMI reduction
• Undervoltage lockout (UVLO), output overvoltage protection (OVP)
• Cycle-by-cycle peak current limit, thermal shutdown
• Up to 85% efficiency at 5mA light load
• Programmable switching frequency: 100kHz to 2.2MHz
• Output voltage is 39V maximum at TA=+25°C
• Operating ambient temperature range from -40 to 85°C
• Shutdown supply current is 1μA typ at VEN=0V, TJ=+25°C, VIN=12V
• Quiescent supply current is 22μA typ at VEN=floating, no load, VBST - VSW=5V, TJ=+25°C, VIN=12V
• SO-8EP package

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