UNISONIC TECHNOLOGIES CO.,LTD.
RXXLD20
Linear Integrated Circuit
www.unisonic.com.tw
1
Copyright 2005 Unisonic Technologies Co.,LTD.
QW-R102-015.C
2A OUTPUT TYPE LOW
POWER-LOSS VOLTAGE
REGULATOR
FEATURES
*Low power-loss(Dropout voltage: 0.5V(max) at Io=2.0A)
*2.0A output type
*Output voltage precision:
3.0%
*Built-in ON/OFF control function and over-current protection
circuit.
*Thermal shutdown protection.
1
TO-220B
TO-220F-4
1
*Pb-free plating product number:RXXLD20L
PIN DESCRIPTION
PIN NO.
TO-220F-4 TO-220B
PIN NAME
1 NC
1 2 INPUT
2 3
OUTPUT
3 4 GND
4 5
ON/OFF
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
Package Packing
RXXLD20-TF4-T RXXLD20L-TF4-T
TO-220F-4
Tube
RXXLD20-TB5-T RXXLD20L-TB5-T
TO-220B Tube
Note: xx: Output Voltage, refer to Marking Information.
MARKING INFORMATION
PACKAGE VOLTAGE CODE
MARKING
TO-220F-4
TO-220B
3 3 : 3 . 3 V
0 5 : 5 . 0 V
0 9 : 9 . 0 V
12 : 12 V
UTC
RXXLD20L
VOLTAGE CODE
DATE CODE
Space :Pb/Sn
L:Pb-free
RXXLD20
Linear Integrated Circuit
UNISONIC TECHNOLOGIES CO., LTD
2
www.unisonic.com.tw
QW-R102-015.C
BLOCK DIAGRAM
TO-220F-4
TO-220B
Specfic IC
1
2
3
4
Specfic IC
2
3
4
5
RXXLD20
Linear Integrated Circuit
UNISONIC TECHNOLOGIES CO., LTD
3
www.unisonic.com.tw
QW-R102-015.C
ABSOLUTE MAXIMUM RATINGS
(Ta=25
)
PARAMETER SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
20
V
ON/OFF Control Terminal Voltage
Vc
20
V
Output Current
I
OUT
2.0 A
No Heat Sink
1.4
W
Power Dissipation
With Heat Sink
P
D
15 W
Junction Temperature
T
J
125
C
Operating Temperature
T
OPR
-20 ~ +85
C
Storage Temperature
T
STG
-40 ~ +150
C
Note: The device is guaranteed to meet performance specification within 0
~70
operating temperature range
and assured by design from 20
~85
, characteristic and correlation with static process control.
ELECTRICAL CHARACTERISTICS
(Refer to the test circuits, unless otherwise specified, Ta=25
C)
For R33LD20(3.3V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX UNIT
Output Voltage
V
OUT
V
IN
=5V, I
OUT
=1A 3.201
3.3
3.399
V
Line Regulation
V
OUT
V
IN
=4 ~ 10V, I
OUT
=5mA
0.1
2.5
%
Load Regulation
V
OUT
V
IN
=5V, I
OUT
=5mA ~ 2.0A
0.1
2.0
%
Temperature Coefficient of Output Voltage
TcVo T
J
=0 ~ 125
C,I
OUT
=5mA
0.02
%/
C
Ripple Rejection
RR
Refer to Fig.2
45
55
dB
Dropout Voltage
V
D
(Note1),
I
OUT
=2A
0.5
V
ON V
C(ON)
V
IN
=5V 2.0
V
Voltage for Control(Note2)
OFF V
C(OFF)
V
IN
=5V
0.8
V
ON I
C(ON)
V
C
=2.7V,V
IN
=5V
20
A
Current for Control
OFF I
C(OFF)
V
C
=0.4V, V
IN
=5V
-0.4
mA
Quiescent Current
I
D
I
OUT
=0A, V
IN
=5V
10
mA
For R05LD20(5V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX UNIT
Output Voltage
V
OUT
V
IN
=7V, I
OUT
=2\1A 4.85
5.0
5.15
V
Line Regulation
V
OUT
V
IN
=6 ~ 12V, I
OUT
=5mA
0.5
2.5
%
Load Regulation
V
OUT
V
IN
=7V, I
OUT
=5mA ~ 2.0A
0.1
2.0
%
Temperature Coefficient of Output Voltage
TcVo T
J
=0 ~ 125
C, I
OUT
=5mA
0.02
%/
C
Ripple Rejection
RR
Refer to Fig.2
45
55
dB
Dropout Voltage
V
D
(Note1),
I
OUT
=2A
0.5
V
ON V
C(ON)
V
IN
=7V
2.0
V
Voltage for Control(Note2)
OFF V
C(OFF)
V
IN
=7V
0.8
V
ON I
C(ON)
V
C
=2.7V, V
IN
=7V
20
A
Current for Control
OFF I
C(OFF)
V
C
=0.4V, V
IN
=7V
-0.4
mA
Quiescent Current
I
D
I
OUT
=0A, V
IN
=7V
10
mA
RXXLD20
Linear Integrated Circuit
UNISONIC TECHNOLOGIES CO., LTD
4
www.unisonic.com.tw
QW-R102-015.C
For R09LD20(9V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX UNIT
Output Voltage
V
OUT
V
IN
=11V, I
OUT
=1A 8.73
9.0
9.27
V
Line Regulation
V
OUT
V
IN
=10 ~ 16V, I
OUT
=5mA
0.5
2.5
%
Load Regulation
V
OUT
V
IN
=11V, I
OUT
=5mA ~ 2.0A
0.1
2.0
%
Temperature Coefficient of Output Voltage
TcVo T
J
=0 ~ 125
C, I
OUT
=5mA
0.02
%/
C
Ripple Rejection
RR
Refer to Fig.2
45
55
dB
Dropout Voltage
V
D
(Note1),
I
OUT
=2A
0.5
V
ON V
C(ON)
V
IN
=11V
2.0
V
Voltage for Control(Note2)
OFF V
C(OFF)
V
IN
=11V
0.8
V
ON I
C(ON)
V
C
=2.7V, V
IN
=11V
20
A
Current for Control
OFF I
C(OFF)
V
C
=0.4V, V
IN
=11V
-0.4
mA
Quiescent Current
I
D
I
OUT
=0A, V
IN
=11V
10
mA
For R12LD20(12V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX UNIT
Output Voltage
V
OUT
V
IN
=14V, I
OUT
=1A 11.64
12.0
12.36
V
Line Regulation
V
OUT
V
IN
=13 ~ 19V, I
OUT
=5mA
0.5
2.5
%
Load Regulation
V
OUT
V
IN
=14V, I
OUT
=5mA ~ 2.0A
0.1
2.0
%
Temperature Coefficient of Output Voltage
TcVo T
J
=0 ~ 125
C, I
OUT
=5mA
0.02
%/
C
Ripple Rejection
RR
Refer to Fig.2
45
55
dB
Dropout Voltage
V
D
(Note1),
I
OUT
=2A
0.5
V
ON V
C(ON)
V
IN
=14V
2.0
V
Voltage for Control(Note2)
OFF V
C(OFF)
V
IN
=14V
0.8
V
ON I
C(ON)
V
C
=2.7V, V
IN
=14V
20
A
Current for Control
OFF I
C(OFF)
V
C
=0.4V, V
IN
=14V
-0.4
mA
Quiescent Current
I
D
I
OUT
=0A, V
IN
=14V
10
mA
Note: 1.Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
2.In case of opening control terminal(pin 5 of TO-220B, pin 4 of TO-220F-4), output voltage turns on.
RXXLD20
Linear Integrated Circuit
UNISONIC TECHNOLOGIES CO., LTD
5
www.unisonic.com.tw
QW-R102-015.C
TEST CIRCUIT
Note :
: TO-220F-4, ( ): TO-220B
1
4
3
2
A
V
Vo
0.33
F
Vc
I
D
Io
Ic
R
L
47
F
+
V
IN
(2)
(3)
(5)
(4)
A
A
Fig.1
1
4
3
2
V
+
+
Fig.2
For Ripple Rejection
V
IN
0.33
F
47
F
Io
R
L
ei
eo
f=120Hz
ei=0.5Vrms
V
IN
=5V(R33LD30)
7V(R05LD30)
11V(R09LD30)
14V(R12LD30)
Io=0.5A
RR=20log (ei/eo)
(2)
(3)
(5)
(4)
TYPICAL APPLICATION
1
4
3
2
V
IN
V
O
l
oad
Cin
Co
+
ON/OFF signal
High or Open:Output ON
Low :Output OFF
( ) : TO-220B
: TO-220F-4
(2)
(3)
(4)
(5)
PDF 
ZIP