PT6409

PT6400 Series 3 Amp 5V Input Adjustable Integrated Switching Regulator SLTS032A (Revised 6/30/2000) Single-Device 5V to 3V Power 85% Efficiency Small SIP Footprint Adjustable Output Voltage The PT6400 is a high performance +5V to +3.3V, 3 Amp, 12-Pin SIP (Single In-line Package) Integrated Switching Regulator (ISR) designed for stand alone (not parallelable) operation. This high-performance ISR allows easy integration of low-power 3.3V logic IC’s into existing 5V systems without redesigning the central power supply. Only two external capacitors are required for proper operation. The output voltage is easily adjustable with one external resistor. The PT6406,7,8 can be used to terminate high-speed data buses such as Futurebus (+2.1V) or the new GTL (+1.2V) logic buses. Please note that this product does not include short circuit protection. Standard Application V IN 2,3,4 C1 + 100µF COM PT6400 5,6,7,8 12 9,10,11 R1 (V OUP) R2 (V ODOWN) V OUT C2 + 100µF COM C1 = Required 100µF electrolytic C2 = Required 100µF electrolytic Pin-Out Information Pin Function 1 Do not connect 2 Vin 3 Vin 4 Vin 5 GND 6 GND 7 GND 8 GND 9 Vout 10 Vout 11 Vout 12 VoutAdjust Ordering Information PT6404… = +1.5 Volts PT6405… = +3.3 Volts PT6406… = +1.8 Volts PT6407… = +2.1 Volts PT6408… = +1.2 Volts PT6409… = +2.5 Volts Pkg Style 300 PT6400 PT Series Suffix (PT1234X) Case/Pin Configuration Vertical Through-Hole Horizontal Through-Hole Horizontal Surface Mount P D E Note: Back sur...