Datasheet

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SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics, T
A
= −40°C to 100°C for the UC282-X series and 0°C to 100°C for the
UC382-X, VB = 5 V, VIN = 3.3 V, VOUT = 2.5 V for the UC382-ADJ, T
A
= T
J
, (unless otherwise stated)
UC382-2 fixed 2.1 V, 3-A family
PARAMETERS TEST CONDITIONS MIN TYP MAX UNITS
Output voltage (I
VOUT
= 100 mA)
UC382-2 2.079 2.100 2.121 V
Output voltage (I
VOUT
= 100 mA)
UC282-2 2.058 2.100 2.121 V
Load regulation I
VOUT
= 10 mA to 3 A 0.5 4 mV
VIN PSSR 80 100 dB
VB PSSR 52 62 dB
I
VOUT
= 3 A, T
J
= 25°C 350 425 mV
VIN dropout voltage = VIN−VOUT
I
VOUT
= 3 A, UC382-2 350 450 mV
VIN dropout voltage = VIN−VOUT
I
VOUT
= 3 A, UC282-2 350 500 mV
VB dropout = VB−VOUT
I
VOUT
= 3 A, UC382-2 1.8 2.10 V
VB dropout = VB−VOUT
I
VOUT
= 3 A, UC282-2 1.8 2.20 V
Short circuit current limit 3.3 4.5 A
VB current
I
VOUT
= 10 mA 6 11 mA
VB current
I
VOUT
= 3 A 18 60 mA
VIN current I
VOUT
= 3 A 2.94 2.97 A
UC382-1 fixed 1.5 V, 3-A family
PARAMETERS TEST CONDITIONS MIN TYP MAX UNITS
Output voltage (I
VOUT
= 100 mA)
UC382-1 1.485 1.500 1.515 V
Output voltage (I
VOUT
= 100 mA)
UC282-1 1.470 1.500 1.515 V
Load regulation I
VOUT
= 10 mA to 3 A 0.5 4 mV
VIN PSSR 80 100 dB
VB PSSR 55 65 dB
I
VOUT
= 3 A, T
J
= 25°C 350 425 mV
VIN dropout voltage = VIN−VOUT
I
VOUT
= 3 A, UC382-1 350 450 mV
VIN dropout voltage = VIN−VOUT
I
VOUT
= 3 A, UC282-1 350 500 mV
VB dropout = VB−VOUT
I
VOUT
= 3 A, UC382-1 1.8 2.10 V
VB dropout = VB−VOUT
I
VOUT
= 3 A, UC282-1 1.8 2.20 V
Short circuit current limit 3.3 4.5 A
VB current
I
VOUT
= 10 mA 6 11 mA
VB current
I
VOUT
= 3 A 18 60 mA
VIN current I
VOUT
= 3 A 2.94 2.97 A