Data Sheet  
					3-TERMINAL POSITIVE LINEAR REGULATOR  
					AZ78LXX  
					General Description  
					Features  
					The AZ78LXX series are three terminal positive regu-  
					lators with several fixed output voltages. These regula-  
					tors can provide local on card regulation, eliminating  
					the distribution problems associated with single point  
					regulation. The AZ78LXX can be used in logic sys-  
					tems, instrumentation, HiFi, and other solid state elec-  
					tronic equipment. When used as a Zener diode/resistor  
					combination replacement, the AZ78LXX usually  
					results an effective output impedance improvement of  
					two orders of magnitude, and lower quiescent current.  
					·
					·
					·
					Output Current up to 100mA  
					Fixed Output Voltages of 5V, 8V, 9V and 12V  
					Output Voltage Tolerances of ±5% over the Full  
					Temperature Range  
					Internal Short Circuit Current-limiting  
					Internal Thermal Overload Protection  
					No External Components  
					·
					·
					·
					Applications  
					With adequate heat sinking the AZ78LXX can deliver  
					100mA output current. Current limiting is included to  
					limit the peak output current to a safe value. Thermal  
					protection is also provided. If internal power  
					dissipation becomes too high for the heat sinking  
					provided, the thermal shutdown circuit takes over  
					preventing the IC from overheating.  
					·
					·
					·
					·
					High Efficiency Linear Regulator  
					Post Regulation for Switching Supply  
					Microprocessor Power Supply  
					Mother Board I/O Power Supply  
					The AZ78LXX are available in the plastic TO-92 (bulk  
					or ammo packing), SOIC-8, SOT-223 and SOT-89-3  
					packages.  
					TO-92 Ammo Packing  
					TO-92  
					SOIC-8  
					SOT-89-3  
					SOT-223  
					Figure 1. Package Types of the AZ78LXX  
					Mar. 2007 Rev. 1. 5  
					BCD Semiconductor Manufacturing Limited  
					1