September 2007 Rev 3 1/11
11
Table 1. Device summary
Order code Marking Package Packaging
2STF2220 2220 SOT-89 Tape & reel
2STF2220
High gain Low Voltage PNP power transistor
Features
■ Very low Collector to Emitter saturation voltage
■ D.C. Current gain, h
FE
>100
■ 1.5 A continuous collector current
Applications
■ Power management in portable equipment
■ Switching regulator in battery charger
applications
Description
The device in a PNP transistor manufactured
using new “PB-HDC” (Power Bipolar High Density
Current) technology. The resulting transistor
shows exceptional high gain performances
coupled with very low saturation voltage.
Figure 1. Internal schematic diagram
SOT-89
www.st.com
