The TPS6734IP is a Fixed 12V Boost Converter Supply capable of delivering 120mA from inputs as low as 3.75V. The device is pin-for-pin compatible with the MAX734 regulator and offers the following advantages lower supply current, wider operating input-voltage range and higher output currents. The only external components required are an inductor, a Schottky rectifier, an output filter capacitor, an input filter capacitor and a small capacitor for loop compensation. An enable input is provided to shut down the converter and reduce the supply current to 3μA when 12V is not needed. The TPS6734 is a 170kHz current-mode PWM controller with an N-channel MOSFET power switch. Gate drive for the switch is derived from the 12V output after start-up to minimize the die area needed to realize the 0.7R MOSFET and improve efficiency at input voltages below 5V. Soft start is accomplished with the addition of one small capacitor. A 1.22V reference (pin 2) is brought out for external use.
Programming voltage for flash memory
Output current of 120mA or greater from 3.75V or higher input
3μA Maximum supply current in shutdown
Only 5 external components required
High efficiency (85% typical, 5V input, 120mA output)
(EN)
