Datasheet

UNISONIC TECHNOLOGIES CO., LTD
URXX20
LINEAR INTEGRATED CIRCUIT
2A OUTPUT TYPE LOW
POWER-LOSS VOLTAGE
REGULATOR

FEATURES
1
* 2.0A output type
* Output voltage precision: ±2.5%
* Built-in ON/OFF control function and over-current protection
circuit.
* Thermal shutdown protection.

TO-252
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
URXX20L-TN3-D-T
URXX20G-TN3-D-T
URXX20L-TN3-D-R
URXX20G-TN3-D-R
Note: Pin Assignment: I: INPUT
G: GND O: OUTPUT
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
Package
TO-252
TO-252
Pin Assignment
1
2
3
I
G
O
I
G
O
Packing
Tube
Tape Reel
1 of 6
QW-R102-052. B
URXX20


LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
TO-252
33: 3.3V
12 :12V
MARKING
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R102-052. B
URXX20

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified.)
PARAMETER
SYMBOL
Input Voltage(Note1)
VIN
Output Current
IOUT
Power Dissipation
PD
Junction Temperature (Note2)
TJ
Operating Temperature
TOPR
Storage Temperature
TSTG
Note 1: All are open except GND and applicable terminals.
Note 2: Overheat protection may operate at 125≦TJ≦150C

UNIT
V
A
W
°C
°C
°C
THERMAL CHARACTERISTICS
PARAMETER
Junction to Ambient

RATINGS
20
2.0
0.7
150
-40 ~ +85
-40 ~ +150
SYMBOL
θJA
RATING
112
UNIT
°C/W
ELECTRICAL CHARACTERISTICS (Refer to the test circuits, unless otherwise specified, TA=25°C)
For UR3320(3.3V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
IQ
TEST CONDITIONS
VIN =5.3V, IOUT=1A
VIN =4.3~10.3V, IOUT=5mA
VIN =5.3V, IOUT=5mA~2.0A
TJ=0~125°C, IOUT=5mA
Refer to Fig.2
IOUT=2A (Note 1)
IOUT=0A, VIN =5.3V
MIN
3.218
45
TYP
3.3
0.5
0.5
±0.02
55
MAX
3.382
2.5
2.0
0.7
10
For UR1220(12V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX
Output Voltage
VOUT VIN =14V, IOUT=1A
11.7
12.0
12.3
Line Regulation
∆VOUT VIN =13~19V, IOUT=5mA
0.5
2.5
Load Regulation
∆VOUT VIN =14V, IOUT=5mA~2.0A
0.5
2.0
Temperature Coefficient of Output Voltage
TCVO TJ=0~125°C, IOUT=5mA
±0.02
Ripple Rejection
RR
Refer to Fig.2
45
55
Dropout Voltage
VD
IOUT=2A (Note 1)
0.7
Quiescent Current
IQ
IOUT =0A, VIN =14V
10
Note: Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
UNIT
V
%
%
%/°C
dB
V
mA
UNIT
V
%
%
%/°C
dB
V
mA
3 of 6
QW-R102-052. B
URXX20

LINEAR INTEGRATED CIRCUIT
TEST CIRCUITS
Fig.1
1
+
3
IO
ei
47μF
0.33μF
+
V eo
2
RL
VIN
VIN=14V(UR1220)
VIN=5.5V(UR3320)
f=120Hz
ei=0.5Vrms
Io=0.5A
RR=20log (ei/eo)
Fig.2 For Ripple Rejection

TYPICAL APPLICATION
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 6
QW-R102-052. B
URXX20
TYPICAL CHARACTERISTICS
Fig.4 Output Voltage vs .Input Voltage
(UR1220)
250
200
20
VIN=18V
Io=0.5A
Output voltage, Vo (V)
Output voltage deviation,
Vo (mV)
Fig.3 Output Voltage Deviation vs .Junction
Temperature (UR1220)
150
100
50
0
-50
-100
15
RL=∞Ω
10
RL=12Ω
RL=6Ω
5
-150
-200
-25
0
25
50
75
100
0
125
0
5
10
15
20
25
Input voltage, VIN (V)
Junction temperature, TJ (°C)
Fig.6 Dropout Voltage vs .Junction
Temperature (UR1220)
Fig.5 Circuit Operating Current vs .Input
Voltage (UR1220)
0.5
Dropout voltage, Vi-o (V)
80
Circuit operating current, IBIAS (mA)

LINEAR INTEGRATED CIRCUIT
60
40
RL=6Ω
20
0.4
0.3
0.2
0.1
RL=12Ω
0
RL=∞Ω
0
5
10
15
20
0
25
Input voltage, VIN (V)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
-25
0
25
50
75
100
125
Junction temperature, TJ (°C)
5 of 6
QW-R102-052. B
URXX20

LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 of 6
QW-R102-052. B