UNISONIC TECHNOLOGIES CO., LTD
UR533
5A ADJUSTABLE/FIXED ULTRA
LOW DROP-OUT LINEAR
REGULATOR
DESCRIPTION
The UTC
UR533
is ultra-low dropout regulators with 5A output
current capability. This device has been optimized for low voltage
applications including V
TT
bus termination, where transient response
and minimum input voltage is critical. The UTC
UR533
is ideal for
low voltage microprocessor applications requiring a regulated output
from 1.3V ~ 5.7V with a power input supply of 1.75V ~ 6.5V.
Current limit ensures 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
LINEAR INTEGRATED CIRCUIT
1
TO-263-5
TO-252-5
1
TO-220-5
*Pb-free plating product number: UR533L
FEATURES
* Ultra Low dropout voltage
* Remote sense operation
* Fast transient response
* Load regulation: 0.05% typical
* 0.5% initial accuracy
* On-chip thermal limiting
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
UR533-xx-TQ5-R
UR533L-xx-TQ5-R
UR533-xx-TQ5-T
UR533L-xx-TQ5-T
UR533-xx-TN5-R
UR533L-xx-TN5-R
UR533-xx-TN5-T
UR533L-xx-TN5-T
UR533-xx-TA5-T
UR533L-xx-TA5-T
Package
TO-263-5
TO-263-5
TO-252-5
TO-252-5
TO-220-5
Packing
Tape Reel
Tube
Tape Reel
Tube
Tube
Note: xx: Output Voltage, refer to Marking Information.
UR533L-xx-TQ5-R
(1)Packing Type
(2)Package Type
(3)Output Voltage Code
(4)Lead Plating
(1) R: Tape Reel, T:Tube
(2) TQ5: TO-263-5, TN5: TO-252-5, TA5: TO-220-5
(3) xx: refer to Marking Information
(4) L: Lead Free Plating, Blank: Pb/Sn
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QW-R102-026,B
UR533
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
TO-220-5
TO-252-5
TO-263-5
15 :1.5V
25 :2.5V
AD:ADJ
UTC
UR533
VOLTAGE CODE
DATE CODE
1 23 45
PIN DESCRITIONS
PIN NO
1
2
3
4
5
PIN NAME
DESCRITION
V
SENSE
Remote Voltage Sense.
Adjust for
UR533-ADJ,
the output voltage determined by feedback voltage.
ADJ/GND
Ground for fixed output products(UR533-xx)
V
OUT
Output Voltage.
V
CNTL
Control Voltage.
V
IN
Input Voltage.
THERMAL DATA
PARAMETER
Thermal Resistance Junction-Case
TO-220-5
TO-252-5
TO-263-5
SYMBOL
θ
JC
RATINGS
3
8
4
UNIT
℃/W
BLOCK DIAGRAM
4
V
CNTL
, C
ONTROL
Thermal
Shutdown
Current
Limit
3
1
2
O
UTPUT
S
ENSE
ADJ/GND
5
V
IN
, P
OWER
V
REF
Voltage Loop
Amplifier
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QW-R102-026,B
UR533
ABSOLUTE MAXIMUM RATINGS
(Ta = 25
℃
)
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
7
V
Control Voltage
V
CNTL
13.2
V
Operating Junction Temperature
T
OPR
0 ~ +125
℃
-65 ~ +150
Storage Temperature
T
STG
℃
Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(T
C
= 25℃, V
OUT
= V
S
, V
ADJ
= 0V unless otherwise specified.)
For UR533-
AD(Adjustable)
PARAMETER
Reference Voltage
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Control Pin Current
Adjust Pin Current
Minimum Load Current
Ripple Rejection
Thermal Regulation
Thermal Shutdown
SYMBOL
V
REF
V
OUT
∆V
OUT
∆V
OUT
V
CNTL
–V
OUT
V
IN
–V
OUT
I
LIMIT
I
CTRL
I
ADJ
I
LOAD
RR
TEST CONDITIONS
V
IN
= 2.0V, V
CNTL
= 2.75V,I
OUT
= 10mA
2.05V
≤
V
IN
≤
5.5V,2.7V
≤
V
CNTL
≤12V,
10mA
≤
I
OUT
≤
5A
3V
≤
V
IN
≤
7V, 10mA
≤
I
OUT
≤
5A
1.75V
≤
V
IN
≤
5.5V, 2.5V
≤
V
CNTL
≤
12V,
I
OUT
= 10mA
V
IN
= 2.1V, V
CNTL
= 2.75V,
10mA
≤
I
OUT
≤
5A
V
IN
= 2.05V,
∆V
REF
= 1%, I
OUT
= 5A
V
CNTL
= 2.75V,
∆V
REF
= 1%,I
OUT
= 5A
V
IN
= 2.05V, V
CNTL
= 2.75V
V
IN
= 2.05V, V
CNTL
= 2.75V,I
OUT
= 10mA
V
IN
= 2.05V, V
CNTL
= 2.75V
V
IN
= 3.3V, V
CNTL
= 5V
V
IN
= 3.75V, V
CNTL
= 3.75V, f = 120Hz,
C
OUT
= 22µF Tantalum, I
OUT
= 2.5A
T
a
= 25°C, 30ms pulse
MIN TYP MAX UNIT
1.243 1.250 1.257
V
1.237 1.250 1.263
V
REF
1.5
1
1
1.05
0.4
5.2
2
50
5.0
80
0.002 0.02
150
6
120
10
5.7
3
5
1.18
0.5
V
V
mV
mV
V
V
A
mA
µA
mA
dB
%/W
℃
For UR533-xx(Fixed)
PARAMETER
UR533-15
Output Voltage
UR533-25
Line Regulation
Load Regulation
Dropout Voltage
Dropout Voltage
Current Limit
Control Pin Current
Minimum Load Current
Ripple Rejection
Thermal Regulation
Thermal Shutdown
SYMBOL
V
OUT
V
OUT
∆V
OUT
∆V
OUT
V
CNTL
–V
OUT
V
IN
–V
OUT
I
LIMIT
I
CTRL
I
LOAD
RR
TEST CONDITIONS
3V
≤
V
IN
≤
7V, 10mA
≤
I
OUT
≤
5A
5.1V
≤
V
IN
≤
7V, 10mA
≤
I
OUT
≤
5A
1.75V
≤
V
IN
≤
5.5V, 2.5V
≤
V
CNTL
≤
12V,
I
OUT
= 10mA
V
IN
= 2.1V, V
CNTL
= 2.75V,
10mA
≤
I
OUT
≤
5A
V
IN
= 2.05V,
∆V
REF
= 1%, I
OUT
= 5A
V
CNTL
= 2.75V,
∆V
REF
= 1%,I
OUT
= 5A
V
IN
= 2.05V, V
CNTL
= 2.75V
V
IN
= 2.05V, V
CNTL
= 2.75V,I
OUT
= 10mA
V
IN
= 3.3V, V
CNTL
= 5V
V
IN
= 3.75V, V
CNTL
= 3.75V, f = 120Hz,
C
OUT
= 22µF Tantalum, I
OUT
= 2.5A
T
a
= 25°C, 30ms pulse
MIN
1.47
2.474
TYP
1.5
2.5
1
1
1.05
0.4
5.2
2
5.0
80
0.002
150
0.02
6
10
MAX UNIT
1.53
V
2.526
V
3
5
1.18
0.5
mV
mV
V
V
A
mA
mA
dB
%/W
℃
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QW-R102-026,B
UR533
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
FOR ADJUSTABLE VERSION
V
CNTL
V
IN
C1
10
μ
F
+
V
CNTL
V
IN
V
SENSE
ADJ V
OUT
V
REF
R1
+
V
OUT
C2
22
μ
F
UTC UR533-ADJ
I
ADJ
50μA
V
OUT
= V
REF
(1+R2/R1) + I
ADJ
(R2)
R2
Note : C2 is recommended to use 22µF solid tantalum or 100µF aluminum electrolytic for output stability.
FOR FIXED OUTPUT VERSION
V
IN
= 2.5V
C1
10μF
V
CNTL
= 3.3V
C2
1μF
+
V
IN
V
SENSE
UTC UR533-1.5
V
OUT
V
CNTL
GND
+
C3
100μF
1.5V at 5A
Note : C3 is recommended to use 22µF solid tantalum or 100µF aluminum electrolytic for output stability.
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QW-R102-026,B
UR533
TYPICAL PERFOMANCE CHARACTERISTICS
Dropout Voltage vs Output Current
1.0
Output Voltage Deviation (%)
0.9
Dropout Voltage (V)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Ta=25°C
Ta=0°C
Ta=125°C
LINEAR INTEGRATED CIRCUIT
Load Regulation vs Temperature
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
0
25
50
75
100 125 150 175
ΔI=5A
0
1
2
3
4
5
Output Current (A)
Junction Temperature (°C)
Reference Voltage vs Temperature
1.275
Output Voltage Deviation (%)
1.270
1.265
1.260
1.255
1.250
1.245
1.240
1.235
1.230
1.225
UR533-ADJ
Short-Circuit Current (A)
11
Short-Circuit Current vs Temeperature
UR533-ADJ
9
7
5
0
25
50
75
100 125 150 175
3
0
25 50
75 100 125 150 175
Junction Temperature (°C)
Ripple Rejection vs Frequency
90
80
Ripple Rejections (dB)
Junction Temperature (°C)
70
60
50
40
30
20
10
0
10
(V
IN
—
V
OUT
)
≤
3V
0.5V
≤
V
RIPPLE
≤
2V
I
OUT
= 5A
100
1k
10k
Frequency (HZ)
100k
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QW-R102-026,B
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