The AP1509 series are monolithic IC designed for a Step-down DC/DC converter, and own the ability of driving a 2A load without additional Transistor It saves board space. The external shutdown function CAN be controlled by Logic level and then come into standby mode. The internal compensation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output Switch If current limit function occurs and VFB is down below 0.5V, the switching frequency will be reduced. The AP1509 series operates at a switching frequency of 150KHz thus allow smaller sized Filter components than what would be needed with lower frequency Switching Regulators Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the Oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The chips are available in a standard 8-lead SOP-8 package. By Diodes, Inc.
AP1509 's PackagesAP1509 's pdf datasheet

AP1509 Pinout, Pinouts
AP1509 pinout,Pin out
This is one package pinout of AP1509,If you need more pinouts please download AP1509's pdf datasheet.

AP1509 Application circuits
AP1509 circuits
This is one application circuit of AP1509,If you need more circuits,please download AP1509's pdf datasheet.

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