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PWM Control Step-Down DC/DC Converter
■DESCRIPTION
The STD1501 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 2A load with excellent line and load regulation. These devices are available in fixed output voltage of 3.3V and 5V an adjustable output version.
The STD1501 operates at a switching frequency of 150KHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.
Other features include a guaranteed ±3% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 100μA standby current.
STD1501 Datasheet
