UCC383-3

ą UCC283-3, UCC283-5, UCC283-ADJ, UCC383-3, UCC383-5, UCC383-ADJ LOWĆDROPOUT 3ĆA LINEAR REGULATOR FAMILY SLUS215B − OCTOBER 1998 − REVISED FEBRUARY 2004 D Precision Positive Linear Series Pass Voltage Regulation D 0.45 V Dropout at 3 A D 50 mV Dropout at 10 mA D Quiescent Current Under 650 µA Irrespective of Load D Adjustable (5-Lead) Output Voltage Version D Fixed (3-Lead) Versions for 3.3-V and 5-V Outputs D Logic Shutdown Capability D Short-Circuit Power Limit of (3% × VIN × ISHORT) D Low VOUT to VIN Reverse Leakage D Thermal Shutdown description The UCC283−3/−5/−ADJ family of positive linear series pass voltage regulators are tailored for low-drop-out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input-to-output differential applications, the UCC283−5 passes 3 A while requiring only 0.45 V of typical input voltage headroom (ensured 0.6-V dropout). TO−263−5 TD PACKAGE (FRONT VIEW) 5 VOUT 4 ADJ 3 GND 2 CT 1 VIN TO−263−3 TD PACKAGE (FRONT VIEW) 3 VOUT 2 GND 1 VIN TO−220−5 T PACKAGE (FRONT VIEW) 5 4 +3 2 1 VOUT ADJ GND CT VIN TO−220−3 T PACKAGE (FRONT VIEW) 3 +2 1 VOUT GND VIN These regulators include reverse voltage sensing that prevents current in the reverse direction. Quiescent current is always less than 650 µA. These devices have been internally compensated in such a way that the need for a minimum output capacitor has been eliminated. UCC283−3 and UCC283−5 versions are in 3-lead packages and ...