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L4941
1A-5V LOW DROP REGULATOR
1/14January 2004 LOW DROPOUT VOLTAGE (450mV Typ.at
1A) VERY LOW QUIESCENT CURRENT THERMAL SHUTDOWN SHORT CIRCUIT PROTECTION REVERSE POLARITY PROTECTION
DESCRIPTIONThe L4941 isa three terminal 5V positive
regulators availablein TO-220, TO-220FP and2 PAK packages, makingit usefulina wide range industrial and consumer applications. Thanksto
its very low input/output voltage drop, these
devices are particularly suitable for battery
powered equipments, reducing consumption and
prolonging battery life.It employs internal current
limiting, antisaturation circuit, thermal shut-down
and safeareaprotection.
L4941VERY LOW DROP 1A REGULATOR
BLOCK DIAGRAM
L49412/14
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe device may occur. Functional operation under theseconditionis
not implied.
THERMAL DATA
CONNECTION DIAGRAM (top view)
ORDERING CODES(*) Availablein Tape& Reel withthe suffix "-TR".
L49413/14
TEST CIRCUITS
Figure1: DC Parameter
Figure2: Load Rejection
Figure3: Ripple Rejection
L49414/14
ELECTRICAL CHARACTERISTICS (Referto test circuit,VI =7V,CI =0.1μF,CO =22μF,= 25°C, unless otherwise specified.)
TYPICAL CHARACTERISTICS
Figure4: Dropout Voltagevs Output Current
Figure5: Dropout Voltagevs Temperature
L49415/14
Figure6: Output Voltagevs Temperature
Figure7: Quiescent Currentvs Temperature
Figure8: Quiescent Currentvs Input Voltage
Figure9: Quiescent Currentvs Output Current
Figure10: Short Circuit Current vs Temperature
Figure11: Peak Output Currentvs Input/Output
Differential Voltage
