UTC U584/5/7
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-003,E
8A,5A,3A LOW DROPOUT POSITIVE
REGULATORS ADJUSTABLE AND
FIXED
DESCRIPTION
The UTC U584/585/587 voltage regulators are monolithic
integrated circuits, designed for use in applications requiring
a well regulated positive output voltage with +5V input. The
output voltage can be adjustable from 3.8 V down to 1.3V.
FEATURES
*Low dropout performance.
*Adjustable output down to 1.3V.
*Line regulation typically below 0.1%.
*Load regulation typically below 0.1%.
*Output current can be up to 8 A for UTC U584.
*Three-terminal adjustable or fixed 3.3V.
TO-220
1
TO-263
1
TO-252
1
1
TO-263-3
1: ADJ/GND 2: OUTPUT 3: INPUT
BLOCK DIAGRAM
CURRENT
LIMITING
OVER
TEMPERATURE
PROTECTION
VOLTAGE
REGULATION
AMPLIFIER
SAFE AREA
PROTECTION
INPUT
OUTPUT
ADJUST
UTC U584/5/7
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-003,E
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL
VALUE UNIT
Input Voltage
V
IN
7
V
Power Dissipation
P
D
Internally
Limited
W
Operating Junction
Temperature Range
T
J
0 to 125
C
Storage Temperature
T
STG
-65 to 150
C
Lead Temperature
(Soldering 10 Sec. )
T
LEAD
300
C
ELECTRICAL CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Reference Voltage
U584
U585
U587
1.3V
(V
IN
-V
OUT
)
3V, 10mA
I
OUT
8A
1.3V
(V
IN
-V
OUT
)
3V, 10mA
I
OUT
5A ,
1.3V
(V
IN
-V
OUT
)
3V, 10mA
I
OUT
3A
* 1.225
1.25 1.275
V
Output Voltage
U584-3.3
U585-3.3
U587-3.3
4.75V
V
IN
6.5V, 10mA
I
OUT
8A
4.75V
V
IN
7V, 10mA
I
OUT
5A
4.75V
V
IN
7V, 10mA
I
OUT
3A
3.234 3.300 3.366 V
Line Regulation (Note 1.2)
U584/5/7
U584/5/7-3.3
2.75V
V
IN
7V, I
OUT
= 10mA
4.75V
V
IN
7V, I
OUT
= 0mA
0.1 0.2
%
Load Regulation (Note 1, 2, 3)
U584/5/7
U584/5/7-3.3
V
IN
-V
OUT
=2.5V.Tj=25
C, 10mA<=I
OUT
<=I
FULLLOAD
V
IN
=5V, Tj=25
C, 0mA
I
OUT
I
FULLLOAD
*
0.2
1.0 %
Dropout Voltage
V
REF
=1%,I
OUT
= I
FULLLOAD
Tj>=25
C
Tj<=25
C
1.2
1.2
1.3
1.35
V
V
Current Limit (Note 3)
U584
U585
U587
V
IN
-V
OUT
=3 V
V
IN
-V
OUT
=3 V
V
IN
-V
OUT
=3 V
*
8.0
5.0
3.0
8.5
5.5
3.6
A
Adjust Pin Current
55
120
A
Adjust Pin Current Change
(Note 3)
1.5V<=(V
IN
-V
OUT
) <=3 V,
10mA<=I
OUT
<=I
FULLLOAD
0.2 5 mA
Minimum Load Current
1.5V<=(V
IN
-V
OUT
) <=3V
*
2
10
mA
Quiescent Circuit Current
V
IN
<=5V *
8
13
mA
Ripple Rejection
f=120Hz, C
OUT
=25
ATant,
V
IN
-V
OUT
=2.5V , I
OUT
= I
FULLLOAD
60 72
dB
Temperature Stability
0.5
%
Long-Term Stability
TA=25
C, 1000Hrs
0.03 1.0 %
RMS Output Noise
(% of V
OUT
)
TA=125
C, 10Hz<=f<=10kHz
0.03 %
Thermal Resistance Junction to
Case U584
U587
1.6
3.0
C /W
Thermal Resistance Junction to
A
MBIENT
,
JA
U585
60
C /W
Thermal Resistance Junction to
T
AB
,
JT
U585
2.7
C /W
UTC U584/5/7
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-003,E
The * denotes specifications which apply over the specified operating temperature range.
Note 1: Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing.
Note 2: Line and load regulation are guaranteed up to the maximum power dissipation (15W for the UTC U584,
10W for the UTC U585). Power dissipation is determined by input / output differential and the output current.
Guaranteed maximum output power will not be available over the full input-output voltage range.
Note 3: I
FULLLOAD
is defined as the maximum value of output load current as a function of input-to-output voltage.
Output current can be different for different input-to-output voltage.
APPLICATION CIRCUIT (ADJUSTABLE)
TAB
I
ADJ
VIN
1
2
3
4.74V
R2
221
1%
R1
127
1%
C2
10
F
C1
10
F
V
OUT
UTC U584/5/7
TANT
V
REF
REQUIRED FOR STABILITY
V
OUT
=V
REF*
(1+R2/R1)+I
ADJ*
R2
3.45V
@7.5A
APPLICATION CIRCUIT (3.3V)
UTC
U584/5/7
VIN>=4.75V
3.3V
8A, 5A, 3A
10uF
22uF
UTC U584/5/7
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R102-003,E
TYPICAL PERFORMANCE CHARACTERISTICS
U584 U584 U584
U585 U585 U585
U587 U587 U587
UTC U584/5/7
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R102-003,E
U584 U584 U584
U585 U585
U585
UTC U584/5/7
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
6
QW-R102-003,E
U587 U587 U587
U584 U585 U587
U584 U585 U587
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