KA7630

www.fairchildsemi.com KA7630/KA7631 Fixed Multi-Output Regulator Features Output Currents up to 0.5A (Output1 & 2) Output Current up to 1A with External Transistor (Output3) Fixed Precision Output 1 Voltage 5.1V ±2% Fixed Precision Output 2 Voltage 8V ±2% (KA7630) Fixed Precision Output 2 Voltage 9V ±2% (KA7631) Control Signal Generator for Output 3 Voltage (12V ±2%) Reset Facility for Output Voltage1 Output 2,3 with Disable by TTL Input Current Limit Protection at Each Output Thermal Shut Down Description The KA7630/KA7631 is a multi-output positive voltage regulator designed to provide fixed precision output voltages of 5.1V, 8V (7630) / 9V(7631) at current up to 0.5Aand 12V at current up to 1A with external PNP transistor. An internal reset circuit generates a reset pulse when the output 1 decreases below the regulated value. Output2 & 3 can be disabled by TTL input. Protection features include over voltage protection, short circuit protection and thermal shutdown. 10-SIP H/S Internal Block Diagram Vin1 1 10uA 3 Cd 100nF RESET Vsys 6 + SW Thermal Shut Down OVP Bandgap Reference Vin2 2 OVP Vin1 2.5V DEL.CAP + SCP 9 Output 1 + 50mV Vin2 10K A614 "Y" Control 10 Output3 7 + SCP + + Output 2,3 1.4V SCP 8 Output 2 5 GND 4 Disable Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation KA7630/KA7631 Absolute Maximum Ratings Parameter DC Input Voltage Disable Input Voltage Output Current Power Dissipation Junction Temperature Operating Temperat...