Datasheet

UNISONIC TECHNOLOGIES CO., LTD
RXXLD20
LINEAR INTEGRATED CIRCUIT
2A OUTPUT TYPE LOW
POWER-LOSS VOLTAGE
REGULATOR

FEATURES
* Low power-loss(Dropout voltage: 0.5V(max) at IOUT=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.

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
RXXLD20L-TB5-T
RXXLD20G-TB5-T
RXXLD20L-TF4-T
RXXLD20G-TF4-T
Note: Pin Assignment: N: NC I: INPUT O: OUTPUT
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Copyright © 2014 Unisonic Technologies Co., Ltd
Pin Assignment
1
2
3
4
5
TO-220B
N
I
O G
F
TO-220F-4
I
O G
F
G: GND F: ON/OFF
Package
Packing
Tube
Tube
1 of 11
QW-R102-015.L
RXXLD20


LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
TO-220F-4
TO-220B
33 :3.3V
35 :3.5V
05 :5.0V
06 :6.0V
08: 8.0V
09 :9.0V
10 :10V
12 :12V
15 :15V
MARKING
BLOCK DIAGRAM
TO-220F-4
TO-220B
2
3
Specfic IC
5
4
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QW-R102-015.L
RXXLD20

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified.)
PARAMETER
SYMBOL
Input Voltage(Note1)
VIN
ON/OFF Control Terminal Voltage (Note1)
Vc
Output Current
IOUT
No Heat Sink
Power Dissipation
PD
With Heat Sink
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

RATINGS
20
20
2.0
1.4
15
150
-40 ~ +85
-40 ~ +150
UNIT
V
V
A
W
W
°C
°C
°C
ELECTRICAL CHARACTERISTICS (Refer to the test circuits, unless otherwise specified, TA=25°C)
For R33LD20(3.3V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control(Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN=5V, IOUT=1A
VIN=4 ~ 10V, IOUT=5mA
VIN=5V, IOUT=5mA ~ 2.0A
TJ=0 ~ 125°C,IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN=5V
VIN=5V
VC=2.7V,VIN=5V
VC=0.4V, VIN=5V
IOUT=0A, VIN=5V
MIN
3.201
For R35LD20(3.5V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control (Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN=5.5V, IOUT=1A
VIN=4.5 ~ 10.5V, IOUT=5mA
VIN=5.5V, IOUT=5mA ~ 2.0A
TJ=0 ~ 125°C,IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN=5V
VIN=5V
VC=2.7V,VIN=5.5V
VC=0.4V, VIN=5.5V
IOUT=0A, VIN=5.5V
MIN
3.395
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45
2.0
45
2.0
TYP MAX UNIT
3.3 3.399
V
0.1
2.5
%
0.1
2.0
%
±0.02
%/°C
55
dB
0.5
V
V
0.8
V
20
μA
-0.4
mA
10
mA
TYP MAX UNIT
3.5 3.605
V
0.1
2.5
%
0.1
2.0
%
±0.02
%/°C
55
dB
0.5
V
V
0.8
V
20
μA
-0.4
mA
10
mA
3 of 11
QW-R102-015.L
RXXLD20

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For R05LD20(5V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control (Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN =7V, IOUT=1A
VIN =6 ~ 12V, IOUT=5mA
VIN =7V, IOUT=5mA ~ 2.0A
TJ=0 ~ 125°C, IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN =7V
VIN =7V
VC=2.7V, VIN =7V
VC=0.4V, VIN =7V
IOUT =0A, VIN =7V
MIN
4.85
For R06LD20(6V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control (Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN =8V, IOUT=1A
VIN =7 ~ 13V, IOUT=5mA
VIN =8V, IOUT=5mA ~ 2.0A
TJ=0 ~ 125°C, IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN =8V
VIN =8V
VC=2.7V, VIN =8V
VC=0.4V, VIN =8V
IOUT =0A, VIN =8V
MIN
5.82
For R08LD20(8V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control (Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN =10V, IOUT=1A
VIN =9~15V, IOUT=5mA
VIN =10V, IOUT=5mA~2.0A
TJ=0~125°C, IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN =10V
VIN =10V
VC=2.7V, VIN =10V
VC=0.4V, VIN =10V
IOUT =0A, VIN =10V
MIN
7.76
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45
TYP
5.0
0.5
0.1
±0.02
55
MAX
5.15
2.5
2.0
0.5
2.0
0.8
20
-0.4
10
45
TYP
6.0
0.5
0.1
±0.02
55
MAX
6.18
2.5
2.0
0.5
2.0
0.8
20
-0.4
10
45
TYP
8.0
0.5
0.1
±0.02
55
MAX
8.24
2.5
2.0
0.5
2.0
0.8
20
-0.4
10
UNIT
V
%
%
%/°C
dB
V
V
V
μA
mA
mA
UNIT
V
%
%
%/°C
dB
V
V
V
μA
mA
mA
UNIT
V
%
%
%/°C
dB
V
V
V
μA
mA
mA
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QW-R102-015.L
RXXLD20

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For R09LD20(9V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control (Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN =11V, IOUT=1A
VIN =10~16V, IOUT=5mA
VIN =11V, IOUT=5mA~2.0A
TJ=0~125°C, IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN =11V
VIN =11V
VC=2.7V, VIN =11V
VC=0.4V, VIN =11V
IOUT =0A, VIN =11V
MIN
8.73
For R10LD20(10V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control (Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN =12V, IOUT=1A
VIN =11~17V, IOUT=5mA
VIN =12V, IOUT=5mA~2.0A
TJ=0~125°C, IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN =12V
VIN =12V
VC=2.7V, VIN =12V
VC=0.4V, VIN =12V
IOUT =0A, VIN =12V
MIN
9.7
For R12LD20(12V)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Dropout Voltage
ON
Voltage for Control (Note 2)
OFF
ON
Current for Control
OFF
Quiescent Current
SYMBOL
VOUT
∆VOUT
∆VOUT
TCVO
RR
VD
VC(ON)
VC(OFF)
IC(ON)
IC(OFF)
IQ
TEST CONDITIONS
VIN =14V, IOUT=1A
VIN =13~19V, IOUT=5mA
VIN =14V, IOUT=5mA~2.0A
TJ=0~125°C, IOUT=5mA
Refer to Fig.2
(Note 1), IOUT=2A
VIN =14V
VIN =14V
VC=2.7V, VIN =14V
VC=0.4V, VIN =14V
IOUT =0A, VIN =14V
MIN
11.64
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45
TYP
9.0
0.5
0.1
±0.02
55
MAX
9.27
2.5
2.0
0.5
2.0
0.8
20
-0.4
10
45
TYP
10.0
0.5
0.1
±0.02
55
MAX
10.3
2.5
2.0
0.5
2.0
0.8
20
-0.4
10
45
2.0
UNIT
V
%
%
%/°C
dB
V
V
V
μA
mA
mA
UNIT
V
%
%
%/°C
dB
V
V
V
μA
mA
mA
TYP MAX UNIT
12.0 12.36
V
0.5
2.5
%
0.1
2.0
%
±0.02
%/°C
55
dB
0.5
V
V
0.8
V
20
μA
-0.4
mA
10
mA
5 of 11
QW-R102-015.L
RXXLD20

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For R15LD20(15V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Output Voltage
VOUT VIN =17V, IOUT=1A
14.55 15.0 15.45
V
Line Regulation
∆VOUT VIN =16~20V, IOUT=5mA
0.5
2.5
%
Load Regulation
∆VOUT VIN =17V, IOUT=5mA~2.0A
0.1
2.0
%
Temperature Coefficient of Output Voltage
TCVO TJ=0~125°C, IOUT=5mA
±0.02
%/°C
Ripple Rejection
RR
Refer to Fig.2
45
55
dB
Dropout Voltage
VD
(Note 1), IOUT=2A
0.5
V
ON
VC(ON) VIN =17V
2.0
V
Voltage for Control (Note 2)
OFF
VC(OFF) VIN =17V
0.8
V
ON
IC(ON) VC=2.7V, VIN =17V
20
μA
Current for Control
OFF
IC(OFF) VC=0.4V, VIN =17V
-0.4
mA
Quiescent Current
IQ
IOUT =0A, VIN =17V
10
mA
Notes: 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.
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QW-R102-015.L
RXXLD20

LINEAR INTEGRATED CIRCUIT
TEST CIRCUITS
Note : ○: TO-220F-4, ( ): TO-220B
Fig.1
1 (2)
ei
0.33μF
+
(3) 2
(4)
3
(5) 4
IO
47μF
+
VIN
VIN=5V(R33LD20)
5.5V(R35LD20)
7V(R05LD20)
8V(R06LD20)
10V(R08LD20)
V eo
RL
VIN=11V(R09LD20)
12V(R10LD20)
14V(R12LD20)
17V(R15LD20)
f=120Hz
ei=0.5Vrms
Io=0.5A
RR=20log (ei/eo)
Fig.2 For Ripple Rejection

TYPICAL APPLICATION
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QW-R102-015.L
RXXLD20
TYPICAL CHARACTERISTICS
Fig.6 Overcurrent Protection Characteristics
(Typical Value)(R09LD20)
12
12
11
11
10
10
Output voltage, Vo (V)
Output voltage, Vo (V)
Fig.5 Overcurrent Protection Characteristics
(Typical Value)(R05LD20)
9
8
7
6
VD=2V
5
VD=3V
4
3
VD=1V
2
VD=2V
9
8
7
VD=3V
6
5
VD=1V
4
3
2
1
0
1.0
2.0
3.0
VD=0.5V
1
VD=0.5V
4.0
0
1.0
Fig.7 Overcurrent Protection Characteristics
(Typical Value)(R12LD20)
VD=2V
10
Output voltage deviation,
VD=3V
9
8
7
VD=1V
6
5
4
3
VD=0.5V
2
1
0
1.0
2.0
3.0
4.0
Output current Io (A)
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3.0
4.0
Fig.8 Output Voltage Deviation vs .Junction
Temperature (R03LD20)
Vo (mV)
12
11
2.0
Output current, Io (A)
Output current, Io (A)
Output voltage, Vo (V)

LINEAR INTEGRATED CIRCUIT
150
VIN=5V
Io=0.5A
100
50
0
-50
-100
-25
0
25
50
75
100
125
Junction temperature, TJ (°C)
8 of 11
QW-R102-015.L
RXXLD20

LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
Fig.9 Output Voltage Deviation vs .Junction
Temperature (R05LD20)
150
Fig.10 Output Voltage Deviation vs .Junction
Temperature (R09LD20)
250
VIN=7V
Io=0.5A
VIN=11V
Io=0.5A
150
100
100
50
50
0
0
-50
-50
-100
-100
-25
0
25
50
75
100
125
-150
-25
Fig.11 Output Voltage Deviation vs .Junction
Temperature (R12LD20)
250
200
0
25
50
75
100
125
Junction temperature, TJ (°C)
Junction temperature, TJ (°C)
Fig.12 Output Voltage vs .Input
Voltage (R33LD20)
8
VIN=18V
Io=0.5A
7
150
6
100
0
50
4
RL=∞Ω
0
3
-50
-100
RL=1.65
1
-150
-200
-25
RL=3.3
2
0
25
50
75
100
125
0
0
2
4
6
Input voltage,
Junction temperature, TJ (°C)
Fig.13 Output Voltage vs .Input
Voltage (R05LD20)
10
8
VIN (V)
Fig.14 Output Voltage vs .Input
Voltage (R09LD20)
10
8
RL=∞Ω
7
RL=9
6
5
RL=4.5
5
Vi-o=1V
4
RL=2.5Ω
RL=∞Ω
3
RL=2.5Ω
Vi-o=0.5V
2
1
0
0
0
2
4
6
8
10
Input voltage, VIN (V)
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0
5
10
15
Input voltage, VIN (V)
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QW-R102-015.L
RXXLD20
TYPICAL CHARACTERISTICS(Cont.)
Fig.15 Output Voltage vs .Input
Voltage (R12LD20)
Fig.16 Circuit Operating Current vs .Input
Voltage (R33LD20)
20
80
Output voltage, Vo (V)
Output voltage, Vo (V)
15
RL=∞Ω
10
RL=12Ω
RL=6Ω
5
60
40
RL=3.3Ω
20
RL=1.65Ω
RL=∞Ω
0
0
0
5
10
15
20
25
0
5
Fig.18 Circuit Operating Current vs .Input
Voltage (R09LD20)
80
80
60
40
RL=2.5Ω
20
RL=5Ω
RL=∞Ω
0
5
10
Circuit operating current, IBIAS (mA)
Circuit operating current, IBIAS (mA)
Fig.17 Circuit Operating Current vs .Input
Voltage (R05LD20)
0
10
Input voltage, VIN (V)
Input voltage, VIN (V)
60
40
RL=4.5Ω
20
RL=9Ω
RL=∞Ω
0
15
10
5
0
Input voltage, VIN (V)
Input voltage, VIN (V)
Fig.20 Dropout Voltage vs .Junction
Temperature
Fig.19 Circuit Operating Current vs .Input
Voltage (R12LD20)
0.5
Dropout voltage, Vi-o (V)
80
Circuit operating current, IBIAS (mA)

LINEAR INTEGRATED CIRCUIT
60
40
RL=6Ω
20
R12LD20
0.4
R33LD20
R09LD20
0.3
R05LD20
0.2
0.1
RL=12Ω
0
RL=∞Ω
0
5
10
15
20
0
25
Input voltage, VIN (V)
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-25
0
25
50
75
100
125
Junction temperature, TJ (°C)
10 of 11
QW-R102-015.L
RXXLD20

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.
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QW-R102-015.L