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-252-5
TO-263-5
1
TO-220-5
Lead-free:
UR533L-xx
Halogen-free: UR533G-xx
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
Ordering Number
Normal
Lead Free
UR533-xx-TA5-T
UR533L-xx-TA5-T
UR533-xx-TN5-R
UR533L-xx-TN5-R
UR533-xx-TQ5-R
UR533L-xx-TQ5-R
UR533-xx-TQ5-T
UR533L-xx-TQ5-T
Note: xx: Output Voltage, refer to Marking Information
.
Halogen Free
UR533G-xx-TA5-T
UR533G-xx-TN5-R
UR533G-xx-TQ5-R
UR533G-xx-TQ5-T
Package
TO-220-5
TO-252-5
TO-263-5
TO-263-5
Packing
Tube
Tape Reel
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2009 Unisonic Technologies Co., Ltd
1 of 7
QW-R102-026,D
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
LOT Code
Voltage Code
UTC
UR533
XX
L: Lead Free
G: Halogen Free
Date Code
1 2 3 4 5
PIN DESCRITIONS
PIN NO.
1
2
3
4
5
PIN NAME
V
SENSE
ADJ/GND
V
OUT
V
CNTL
V
IN
DESCRITION
Remote Voltage Sense.
Adjust for
UR533-ADJ,
the output voltage determined by feedback voltage.
Ground for fixed output products(UR533-xx)
Output Voltage.
Control Voltage.
Input Voltage.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 7
QW-R102-026,D
UR533
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 7
QW-R102-026,D
UR533
ABSOLUTE MAXIMUM RATINGS
(Ta = 25°С)
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
7
V
Control Voltage
V
CNTL
13.2
V
-40~+85
Operating Junction Temperature
T
OPR
°С
Storage Temperature
T
STG
-65~+150
°С
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.
THERMAL DATA
PARAMETER
Junction to Case
TO-220-5
TO-252-5
TO-263-5
SYMBOL
θ
JC
RATINGS
3
8
4
UNIT
°С/W
°С/W
°С/W
ELECTRICAL CHARACTERISTICS
(T
C
= 25°С, 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
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
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
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
6
120
10
5.7
3
5
1.18
0.5
V
V
mV
mV
V
V
A
mA
µA
mA
dB
%/W
°С
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
MAX UNIT
1.53
V
2.526
V
3
5
1.18
0.5
mV
mV
V
V
A
mA
mA
dB
%/W
°С
4 of 7
QW-R102-026,D
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
UR533
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
Note: C2 is recommended to use 22µF solid tantalum or 100µF aluminum electrolytic for output stability.
Note: C3 is recommended to use 22µF solid tantalum or 100µF aluminum electrolytic for output stability.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R102-026,D
模拟与混合信号
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
