Generate up to 27V at low power levels

February 11, 2014 // By Graham Prophet
A current-mode step-up converter for small, low power applications, the input voltage of the Advanced Power Electronics APE1913-3 converter can range from 2.6V to 5.5V, while the output voltage can be adjusted up to 27V.

Nominal operating frequency of 1.2 MHz enables the use of small external inductors and capacitors and facilitates fast transient response. The internal soft-start results in a small inrush current and extends battery life. An internal power MOSFET with very low on-resistance (R DS(ON)) ensures high efficiency.

The APE1913-3 converter automatically switches from PWM to PFM during light load conditions to increase its efficiency. The device also provides protection functions such as under-voltage lockout, current limit and thermal shutdown. The APE1913TY5-HF-3 is available in a TSOT-23-5 package.