AX1203

AX1203 3A Ultra Low Dropout Linear Regulator  GENERAL DESCRIPTION The AX1203 is a low-dropout voltage regulator suitable for various electronic equipments. It provides constant voltage power source. The dropout voltage of AX1203 is below 0.4V in full rated current (3A). This regulator has various functions such as a peak current protection, a thermal shut down, a short circuit protect. The AX1203 is available in TO220-5L and PDIP-8L power packages which features small size to reduce the junction-to-case resistance, being applicable in 0.5~3W applications.  FEATURES - Ultra Low Dropout - 0.4V(typical) at 3A Output Current - Adjustable mode: 1.22V Reference Voltage - Fixed mode:5V, 9V, 12V output voltage - Operating voltage can be up to 23V. - Current-Limit and Thermal Shutdown Protection € - Short circuit protection, Enable yÑbfunction. R ` w MOS m - Built-in internal SW P-channel o m Û c . V h - TO220-5L, TO220-5LR and PDIP-8L ecPb-Free Packages.  BLOCK DIAGRAM w w w fo o g . t Vcc 10uA OUT Current Limit EN 7V - + Error Amp FB Enable Vref=1.22V Thermal Shutdown GND 1/11 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.7 Jun.09, 2011 AX1203  PIN ASSIGNMENT The packages of AX1203 are TO220-5L, TO220-5LR and PDIP-8L; the pin assignment is given by: TO220-5L ( Side View ) TO220-5LR ( Side View ) Metal Tab OUT 5 Vcc 4 EN 3 OUT 2 FB 1 GND Metal Tab OUT 5 Vcc 4 EN 3 OUT 2 FB 1 GND ( Top View ) ( Top View ) Name Descri...