www.fairchildsemi.com
KA7630/KA7631
Fixed Multi-Output Regulator
Features
• Output Currents up to 0.5A (Output1 & 2) •...
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...