UNISONIC TECHNOLOGIES CO.,LTD.
RXXLD10
LINEAR INTEGRATED CIRCUIT
www.unisonic.com.tw
1
Copyright 2005 Unisonic Technologies Co.,LTD.
QW-R102-025,A
LOW VOLTAGE OPERATION
LOW POWER-LOSS VOLTAGE
REGULATORS
FEATURES
* Low voltage operation (Minimum operating voltage: 2.35V) 2.5V
input available 1.5 ~ 1.8V
* Low dissipation current
* Built-in overcurrent protection and over temperature protection
functions
EQUIVALENT
2
5
1
3
Specific IC
1
TO-252-5
*Pb-free plating product number: RXXLD10L
PIN DESCRIPTION
PIN NO.
PIN NAME
1 INPUT
2 ON/OFF
3 OUTPUT
4 NC
5 GND
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
Package Packing
RXXLD10-TN5-R RXXLD10L-TN5-R
TO-252-5 Tape
Reel
Note: xx: Output Voltage, refer to Marking Information.
MARKING INFORMATION
PACKAGE VOLTAGE CODE
MARKING
TO-252-5
1 5 : 1 . 5 V
1 8 : 1 . 8 V
2 5 : 2 . 5 V
0 3 : 3 . 0 V
3 3 : 3 . 3 V
UTC
RXXLD10L
VOLTAGE CODE
DATE CODE
Space :Pb/Sn
L:Pb-free
RXXLD10
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
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QW-R102-025,A
ABSOLUTE MAXIMUM RATINGS
(Ta = 25
)
PARAMETER SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
10 V
ON/OFF Control Terminal Voltage (Note 2)
V
C
10 V
Output Current
I
OUT
1.0 A
Power Dissipation (with infinite heat sink)
P
D
8 W
Junction Temperature
T
J
125
Operating Temperature
T
OPR
-20 ~ +85
Storage Temperature
T
STG
-40 ~ +150
Note 1.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.
2: All are open except GND and applicable terminals.
3.The device is guaranteed to meet performance specification within 0
~70
operating temperature range
and assured by design from 20
~85
.
ELECTRICAL CHARACTERISTICS
(V
IN
= V
O (TYP.)
+1V, I
OUT
= 0.5A, V
C
= 2.7V, Ta = 25
, unless otherwise specified.)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX UNIT
R15LD10 2.35
10
R18LD10 2.35
10
R25LD10 V
OUT
+0.5 10
R03LD10 V
OUT
+0.5 10
Input Voltage
R33LD10
V
IN
V
OUT
+0.5 10
V
R15LD10 1.45
1.5
1.55
R18LD10 1.75
1.8
1.85
R25LD10 2.438
2.5
2.562
R03LD10 2.925
3
3.075
Output Voltage
R33LD10
V
OUT
3.218 3.3
3.382
V
ON V
C (ON)
2
V
Voltage for Control
(Note 1)
OFF V
C (OFF)
0.8
V
ON I
C (ON)
200
A
Current for Control
OFF I
C (OFF)
V
C
= 0.4V
2
A
Quiescent Current
I
Q
I
OUT
= 0A
1
2
mA
Output Off-state Dissipation Current
I
QS
I
OUT
= 0A, V
C
= 0.4V
5
A
Load Regulation
V
OUT
I
OUT
= 5mA ~ 1A
0.2
2
%
Line Regulation
V
OUT
V
IN
= V
O (TYP.)
+1V~V
O (TYP.)
+6V
I
OUT
= 5mA
0.1
1
%
Dropout Voltage(Note 2)
V
D
I
OUT
= 0.5A
0.2
0.5
V
Temperature Coefficient of Output
Voltage
T
C
V
O
T
J
= 0 ~ 125C, I
OUT
= 5mA
0.01
%/
Ripple Rejection
RR
Refer to Fig.2
45
60
dB
Note 1: In case of opening control terminal pin 2, output voltage turns off.
2: Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
RXXLD10
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
3
www.unisonic.com.tw
QW-R102-025,A
TEST CIRCUIT
2
5
1
3
A
A
A
V
Vc
Ic
Io
UT
V
OUT
R
L
I
Q
+
V
IN
47
F
0.33
F
Fig.1
5
V
Vc
2.7V
I
OUT
eo
R
L
+
V
IN
47
F
0.33
F
+
1
3
2
~
ei
f = 120Hz (sine wave), ei (rms) = 0.5V, V
IN
= V
O (TYP)
+2V, I
OUT
= 0.5A, RR = 20log (ei (rms) /eo (rms))
Fig.2 For Ripple Rejection
TYPICAL APPLICATION CIRCUIT
Load
+
V
IN
1
3
High : Output ON
Low or open : Output OFF
C
IN
5
2
Vo
UT
Co
ON/OFF signal
RXXLD10
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
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QW-R102-025,A
TYPICAL CHARACTERISTICS
80
Power Dissipation vs . Ambient
0
P
o
we
r
Di
s
s
i
p
a
t
i
o
n
,
P
D
(W
)
Ambient Temperature, Ta (
)
-20
20
5
10
P
D
: With infinite heat sink
60
40
0
-40
8
2
0
O
u
t
p
ut
V
o
l
t
age,
V
o
UT
(V
)
1
0.9
1.5
1.5
0.5
0
1.2
V
IN
= 2.35V
V
IN
= 3V
V
IN
= 3.3V
V
IN
= 2.5V
V
IN
= 5V
Overcurrent Protection Characteristics
(R15LD10)
Output Current, Io
UT
(A)
0.6
0.3
2
0
O
u
t
p
ut
V
o
l
t
age,
V
o
UT
(V
)
1
1
1.8
1.5
0.5
0
1.2
V
IN
= 2.35V
V
IN
= 2.5V
Overcurrent Protection Characteristics
(R18LD10)
Output Current, Io
UT
(A)
0.6
0.4
1.6
1.4
0.8
0.2
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 3V
2
0
O
u
t
p
ut
V
o
l
t
age,
V
o
UT
(V
)
1
1.5
2.5
1.5
0.5
0
Overcurrent Protection Characteristics
(R25LD10)
Output Current, Io
UT
(A)
0.5
2
1
V
IN
= 5V
V
IN
= 3.3V
V
IN
= 3V
V
IN
= 4.5V
V
IN
= 3.6V
2
0
O
u
t
put V
o
l
t
age,
V
o
UT
(V
)
1
3
1.5
0.5
0
2
V
IN
= 5.5V
Overcurrent Protection Characteristics
(R03LD10)
Output Current, Io
UT
(A)
1
2.5
1.5
0.5
V
IN
= 5V
V
IN
= 7V
V
IN
= 10V
2
0
O
u
t
put V
o
l
t
age,
V
o
UT
(V
)
1
2
3.5
1.5
0.5
0
2.5
V
IN
= 4.5V
Overcurrent Protection Characteristics
(R33LD10)
Output Current, Io
UT
(A)
1
3
1.5
0.5
V
IN
= 5V
V
IN
= 10V
V
IN
= 7V
V
IN
= 4.5V
V
IN
= 5.5V
RXXLD10
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
5
www.unisonic.com.tw
QW-R102-025,A
TYPICAL CHARACTERISTICS(cont.)
125
1.45
O
u
tput
V
o
l
t
age,
V
o
UT
(V
)
50
1.55
75
0
-50
1.52
Output Voltage vs. Ambient Temperature
(R15LD10)
Ambient Temperature, Ta (
)
1.48
1.53
1.5
1.47
-25
25
100
V
IN
= 2.5V
V
C
= 2.7V
1.54
1.51
1.49
1.46
Io
UT
= 0.5A
125
1.75
O
u
tput
V
o
l
t
age,
V
o
UT
(V
)
50
1.85
75
0
-50
1.82
Output Voltage vs. Ambient Temperature
(R18LD10)
Ambient Temperature, Ta (
)
1.78
1.83
1.8
1.77
-25
25
100
V
IN
= 2.8V
V
C
= 2.7V
1.84
1.81
1.79
1.76
Io
UT
= 0.5A
125
2.475
O
u
tp
ut V
o
l
t
age,
V
o
UT
(V
)
50
2.525
75
0
-50
2.51
Output Voltage vs. Ambient Temperature
(R25LD10)
Ambient Temperature, Ta (
)
2.49
2.515
2.5
2.485
-25
25
100
V
IN
= 3.5V
V
C
= 2.7V
2.52
2.505
2.495
2.48
Io
UT
= 0.5A
125
2.95
O
u
tput
V
o
l
t
age,
V
o
UT
(V
)
50
3.05
75
0
-50
3.02
Output Voltage vs. Ambient Temperature
(R03LD10)
Ambient Temperature, Ta (
)
2.98
3.03
3
2.97
-25
25
100
V
IN
= 4V
V
C
= 2.7V
3.04
3.01
2.99
2.96
Io
UT
= 0.5A
125
3.25
O
u
tp
ut V
o
l
t
age,
V
o
UT
(V
)
50
3.35
75
0
-50
3.32
Output Voltage vs. Ambient Temperature
(R33LD10)
Ambient Temperature, Ta (
)
3.28
3.33
3.3
3.27
-25
25
100
V
IN
= 4.3V
V
C
= 2.7V
3.34
3.31
3.29
3.26
Io
UT
= 0.5A
5
0
O
u
tp
ut V
o
l
t
age,
V
o
UT
(V
)
3
1.6
0
1.2
Output Voltage vs. Input Voltage
(R15LD10)
Input Voltage, V
IN
(V)
0.8
0.4
1
2
4
R
L
= 1.5
(Io
UT
= 1A)
1.4
1
0.6
0.2
R
L
= 3
(Io
UT
= 0.5A)
R
L
=
(Io
UT
= 0A)
V
C
= 2.7V
Ta = Room temp.
C
IN
= 0.33
F
Co = 47
F
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