UTC UZ1085 LINEAR INTEGRATED CIRCUIT
3A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR REGULATOR
DESCRIPTION
The UZ1085-ADJ,UZ1085-Fixed are low dropout
three-terminal regulators with 3A output current capability.
These devices have been optimized for low voltage
applications including VTT bus termination, where transient
response and minimum input voltage are critical.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limiting
provides protection against any combination of overload and
ambient temperature that would create excessive junction
temperatures.
1
23
TO-252
12
3
TO-220
1
FEATURES
*Fast transient response
*Low dropout voltage at up to 3A
*Load regulation:0.05% typical
*Trimmed current limit
*On-chip thermal limiting
2
1
3
2
3
TO-263-3
TO-263
1: ADJ/GND
2: V
OUT
3: V
IN
APPLICATIONS
*Pentium Class GTL+bus supply
*Low voltage logic supply
*Post regulator for switching supply
TYPICAL APPLICATIONS
UZ1085-ADJ
V
OUT
V
IN
+
ADJ
R1
124惟
R2
768惟
+
22渭F
V
IN
=12V
22渭F
9V at 3A
V
OUT
=V
REF
(1+R2/R1)+I
ADJ*
R2
V
IN
=9V
22渭F
+
V
IN
UZ1085-3.3
V
OUT
GND
+
22渭F
3.3V at 3A
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-013,A