Datasheet

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    
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SLUS215B − OCTOBER 1998 − REVISED FEBRUARY 2004
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics T
A
= 0°C to 70°C for the UCC383−x series, T
A
= −40°C to 85°C for the
UCC283−x, V
VIN
= V
VOUT
+ 1.5 V, I
OUT
= 10 mA, C
IN
= 10 mF, C
OUT
= 22 mF. For the UCC283−ADJ, V
VIN
= 6.5 V, V
OUT
= 5.0 V, C
T
= 750 pF, T
J
= T
A
unless otherwise stated
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
UCC283−ADJ Adjustable Output, 3 A Family
Regulating voltage at ADJ pin
TJ = 25°C 1.23 1.25 1.27 V
Regulating voltage at ADJ pin
Over temperature 1.22 1.28 V
Line regulation voltage, at ADJ input V
VIN
= V
VOUT
+ 150 mV to 9 V 1 3 mV
Load regulation voltage, at ADJ input I
OUT
= 10 mA to 3 A 2 5 mV
V
OUT
= 4.85 V, I
OUT
= 3 A 0.4 0.6 V
Dropout voltage, V
DROPOUT
= VIN − VOUT
V
OUT
= 4.85 V, I
OUT
= 1.5 A 0.2 0.45 V
Dropout voltage, V
DROPOUT
= VIN − VOUT
V
OUT
= 4.85 V, I
OUT
= 10 mA 50 150 mV
Peak current limit V
VOUT
= 0 V 4 7 10 A
Overcurrent threshold 3 4 5.5 A
Current limit duty cycle V
VOUT
= 0 V 3 5 %
Overcurrent time out, t
ON
V
VOUT
= 0 V 300 575 1200 µs
Reverse leakage current
1 V < V
VIN
< V
VOUT
V
VOUT
≤ 9 V, at V
VOUT
30 100 µA
Bias current at ADJ input 20 250 nA
Quiescent current No load 400 650 µA
Shutdown threshold At CT input 0.25 0.65 V
Quiescent current in shutdown V
VIN
= 9 V 40 75 µA
UVLO VIN where VOUT passes current 2.5 2.8 3 V
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Input voltage
VIN 9 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CT −0.3 V to 3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJ −0.3 V to 9 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature, T
stg
−65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction Temperature, T
J
−55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (soldering, 10 seconds) 300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.