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UNISONIC TECHNOLOGIES CO.,LTD.
RXXLD10
LINEAR INTEGRATED CIRCUIT
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
1
TO-252-5
1
Specific IC
5
3
2
*Pb-free plating product number: RXXLD10L
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
INPUT
ON/OFF
OUTPUT
NC
GND
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
Package
RXXLD10-TN5-R RXXLD10L-TN5-R TO-252-5
Note: xx: Output Voltage, refer to Marking Information.
Packing
Tape Reel
MARKING INFORMATION
PACKAGE VOLTAGE CODE
TO-252-5
15:1.5V
18:1.8V
25:2.5V
03:3.0V
33:3.3V
MARKING
VOLTAGE CODE
UTC
RXXLD10L
Space :Pb/Sn
L: Pb-fr ee
DATE CODE
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co.,LTD.
1
QW-R102-025,A

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RXXLD10
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta = 25)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN 10 V
ON/OFF Control Terminal Voltage (Note 2)
VC
10
V
Output Current
IOUT 1.0 A
Power Dissipation (with infinite heat sink)
Junction Temperature
Operating Temperature
Storage Temperature
PD
TJ
TOPR
TSTG
8
125
-20 ~ +85
-40 ~ +150
W
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 0~70operating temperature range
and assured by design from –20~85.
ELECTRICAL CHARACTERISTICS
(VIN = VO (TYP.)+1V, IOUT = 0.5A, VC = 2.7V, Ta = 25, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
R15LD10
2.35 10
R18LD10
2.35 10
Input Voltage
R25LD10
R03LD10
R33LD10
VIN
VOUT+0.5
VOUT+0.5
VOUT+0.5
10 V
10
10
R15LD10
1.45 1.5 1.55
R18LD10
1.75 1.8 1.85
Output Voltage
R25LD10
VOUT
2.438 2.5 2.562 V
R03LD10
2.925
3 3.075
R33LD10
3.218 3.3 3.382
Voltage for Control
(Note 1)
ON
OFF
VC (ON)
VC (OFF)
2V
0.8 V
Current for Control
ON
OFF
IC (ON)
IC (OFF)
VC = 0.4V
200 µA
2 µA
Quiescent Current
IQ IOUT = 0A
1 2 mA
Output Off-state Dissipation Current
Load Regulation
IQS IOUT = 0A, VC = 0.4V
VOUT IOUT = 5mA ~ 1A
5 µA
0.2 2 %
Line Regulation
VOUT
VIN = VO (TYP.)+1V~VO (TYP.)+6V
IOUT = 5mA
0.1 1 %
Dropout Voltage(Note 2)
VD IOUT = 0.5A
0.2 0.5 V
Temperature Coefficient of Output
Voltage
TC VO TJ = 0 ~ 125°C, IOUT = 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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2
QW-R102-025,A

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RXXLD10
TEST CIRCUIT
VIN
0.33μF
LINEAR INTEGRATED CIRCUIT
13
2
5
A IQ
Vc
A Ic
VOUT
+
47μF
A IoUT
V
RL
ei ~
V IN
Fig.1
13
0.33μF
Vc
2
5
2.7V
+
47μF
IOUT
RL
+
eo
V
f = 120Hz (sine wave), ei (rms) = 0.5V, VIN = VO (TYP)+2V, IOUT = 0.5A, RR = 20log (ei (rms) /eo (rms))
Fig.2 For Ripple Rejection
TYPICAL APPLICATION CIRCUIT
1
3
VoUT
VIN CIN
2
5
Co +
Load
ON/OFF signal
High : Output ON
Low or open: Output OFF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3
QW-R102-025,A