Overview: R1213K Series
2.5 A PWM Step-up DC/DC Converter
NO.EA-278-180731
OUTLINE
The R1213K is a low supply current PWM step-up DC/DC converter capable of providing an output current up to 2.5 A. Internally, the device consists of an Nch MOSFET driver, an oscillator, a PWM parator, a voltage reference unit, an error amplifier, a soft-start circuit, an under voltage lockout circuit (UVLO), a thermal shutdown protection circuit, an overcurrent protection circuit and an latch-type protection circuit. The R1213K requires minimal external ponent count. By simply using an inductor, resistors, capacitors and a diode, a high-efficiency step-up DC/DC converter can be easily configured. The R1213K can adjust the output voltage, the soft-start time, the phase pensation using the external resistors and capacitors. The R1213K has a shutdown control function which can be activated by a protection circuit to turn off the external Pch MOSFET for breaking the current path between the input and output. The R1213K provides an overcurrent protection circuit, a latch-type protection circuit, a thermal shutdown protection circuit and an UVLO circuit. The overcurrent protection circuit limits the LX peak current and a latchtype protection circuit latches the Nch MOSFET off to stop the operation of the DC/DC converter if the output voltage drop due to overcurrent continues more than the protection delay time. The R1213K is offered in a 12-pin DFN(PL)2730-12 package.
