Datasheet ON Semiconductor KA278R12C — 数据表

KA278RXXC-Series
2 A Output Low Dropout Voltage Regulators
Features Description KA278RXXC-Series (33 / 05 / 12)
• 3.3 V, 5 V, 12 V Output Low-Dropout Voltage Regulator
• TO-220 Full-Mold Package (4 Pin)
• Over-Current Protection, Thermal Shutdown
• Over-Voltage Protection, Short-Circuit Protection
• Output Disable Function The KA278RXXC is a low-dropout voltage regulator suitable for various electronic equipment. It provides a constant voltage power source in a TO-220 4-lead full-mold
package. The dropout voltage is below 0.5 V in full-rated
current (2 A). This regulator has peak current protection,
thermal shutdown, and over-voltage protection. KA278RA05C
• Nominal 5 V Output without Adjusting TO-220F 4L • Output Adjustable between 1.27 V and 32 V
• 2 A Output Low-Dropout Voltage Regulator
• TO-220 Full-Mold Package (4 Pin)
1 • Over-Current Protection, Thermal Shutdown 1. VIN 2. VO 3. GND 4. Vdis -KA278RXXC (33 / 05 / 12)
1.VIN 2. VO 3. GND 4. Vadj -KA278RA05C • Over-Voltage Protection, Short-Circuit Protection Ordering Information
Part Number Operating
Temperature
Range Top Mark KA278R33CTU 278R33 KA278R05CTU 278R05 KA278R12CTU -20 to 80°C 278R12 KA278RA05CTU 278RA05 KA278R12CYDTU 278R12 © 2004 Fairchild Semiconductor Corporation
KA278RXXC-Series Rev. 1.1.0 Package TO-220F 4L Packing Method Rail TO-220F 4L (Forming) www.fairchildsemi.com
1 KA278RXXC-Series — 2 A Output Low Dropout Voltage Regulators July 2013 Vin Q1 1 2 Vin Vo OVERVOLTAGE
PROTECTION THERMAL SHUTDOWN THERMAL SHUTDOWN -BANDGAP REFERENCE Q1 1 BANDGAP REFERENCE + 4 + Rin SOA PROTECTION SOA PROTECTION
HIGH / LOW …