L4941BDT STMicroelectronics

L4941 Very low drop 1A regulator Feature summary Low dropout voltage (450mV typ. at 1A) Very low quiescent current Thermal shutdown Short circuit protection Reverse polarity protection Description TO-220 DPAK The L4941 is a three terminal 5V positive regulators available in TO-220 and DPAK packages, making it useful in a wide range of industrial and consumer applications. Thanks to prolonging battery life. It employs internal current its very low input/output voltage drop, these limiting, antisaturation circuit, thermal shut-down devices are particularly suitable for battery and safe area protection. powered equipments, reducing consumption and Order code Part number Package L4941BV TO-220 L4941BDT-TR DPAK September 2006 Rev. 5 1/17 www.st.com 17L4941 Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17