TPS6734IP

Повышающий импульсный стабилизатор, фиксированный, 2.7В-12В (Vin), 12В и 120мА на выходе, DIP-8.

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.