PT6405B PDF – Adjustable Integrated Switching Regulator

Part Number: PT6405B

Function: Adjustable Integrated Switching Regulator

Package: SIP 12 Pin Type

Manufacturer: Texas Instruments


PT6405B datasheet



The PT6405B 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.


1. Single-Device 5V to 3V Power

2. 85% Efficiency

3. Small SIP Footprint

4. Adjustable Output Voltage


PT6405B Datasheet PDF Download

PT6405B pdf

Other data sheets are available within the file: PT6405D, PT6405E, PT6405P, PT6424