UNISONIC TECHNOLOGIES CO.,
LR1116/A LINEAR INTEGRATED CIRCUIT
www.unisonic.com.tw 1
Copyright © 2005 Unisonic Technologies Co., QW-R102-022.F
LOW DROP FIXED AND
ADJUSTABLE POSITIVE
VOLTAGE REGULATORS
DESCRIPTION
The UTC LR1116/A is a low drop voltage regulator able to
provide up to 0.8/1.0A of output current, available also for
adjustable version (VREF=1.25V). Output consists of pnp
power transistor. So that dropout voltage can be extremely
low.
FEATURES
* Low dropout voltage (0.6V max.)
* 2.85V device are suitable for SCSI-2 active termination
* Output current up to 0.8/1.0A
* Adjustable version available.(VREF=1.25V)
* Internal current and thermal limit
* Available in ±1%(at 25°C) and 2% in all temperature range
SOP-8SOT-223
1
TO-220 TO-252
TO-263
1
1
1
TO-263-3
1
1
SOT-89
*Pb-free plating product number:
- LR1116L-xx
- LR1116AL-xx
ORDERING INFORMATION
Order Number
Normal Lead Free Plating Package ②
Pin Assignment
③
Packing
LR1116①-xx-AA3-②-③ LR1116①L-xx-AA3-②-③SOT-223
LR1116①-xx-AB3-②-③ LR1116①L-xx-AB3-②-③SOT-89
LR1116①-xx-TA3-②-③ LR1116①L-xx-TA3-②-③TO-220
LR1116①-xx-TN3-②-③ LR1116①L-xx-TN3-②-③TO-252
LR1116①-xx-TQ2-②-③ LR1116①L-xx-TQ2-②-③TO-263
LR1116①-xx-TQ3-②-③ LR1116①L-xx-TQ3-②-③TO-263-3
A: GOI
B: OGI
C: GIO
D: IGO
LR1116①-xx-S08-②-③ LR1116①L-xx-S08-②-③SOP-8 GOOIxOOx
R: Tape Reel
T: Tube
Note: 1. ①: Current code: Blank: 800mA A: 1A
2. Pin assignment: I:Vin O:Vout G:GND x:NC
3. xx: Output Voltage, refer to Marking Information.
Example: LR1116L-285-AA3-B-T
800mA, 2.85V, SOT-223 package, Pin1:Vout, Pin2:Ground, Pin3:Vin, packing by Tube.
LR1116/A LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 2
www.unisonic.com.tw QW-R102-022.F
MARKING INFORMATION
PACKAGE VOLTAGE CODE MARKING
SOT-223
SOT-89
12 3
LR1116
VOLTAGE
CODE DATE
CODE
PIN CODE
CURRENT
CODE
TO-220
TO-252
TO-263
TO-263-3
12 :1.2V
15 :1.5V
18 :1.8V
25 :2.5V
285 :2.85V
30 :3.0V
33 :3.3V
36 :3.6V
50 :5.0V
AD :ADJ
123
UTC
LR1116
VOLTAGE
CODE DATE
CODE
PIN CODE
CURRENT
CODE
Note: Current code: Blank: 0.8A A: 1A
THERMAL DATA
PARAMETER SYMBOL RATINGS UNIT
SOT-223 15
SOT-89 15
SOP-8 20
TO-252 8
TO-220 4
Thermal Resistance Junction-Case
TO-263
θJC
4
°C/W
LR1116/A LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 3
www.unisonic.com.tw QW-R102-022.F
BLOCK DIAGRAM
+
-
Current
Limit
Therml
Shut Down
Reference
Voltage
VCC
VCC VCC
VoUT
GND
APPLICATION CIRCUIT
VIN
CIN
10µF
UTC
LR1116/A VOUT
COUT
10µF
LR1116/A LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 4
www.unisonic.com.tw QW-R102-022.F
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNIT
DC Input Voltage VIN 15 V
Operating Junction Temperature TOPR 0 ~ +125 °C
Storage Temperature TSTG -40 ~ +150 °C
Note: 1. The device may be damaged while beyond Absolute Maximum Rating.
2. The device is guaranteed to meet performance specifications within 0°C~70°C operation temperature range,
and is assured by design from 0°C~125°C.
ELECTRICAL CHARACTERISTICS
(Ta=25°C, refer to the test circuits, TJ=-0~125°C, CO=10µF, unless otherwise specified.)
For LR1116/A-Adj
PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX UNIT
Reference Voltage VREF V
IN-VOUT=1.5V, IOUT=10mA, TJ=25°C 1.238 1.25 1.262 V
Reference Voltage VREF
VIN-VOUT=1V~10V
LR1116 : IOUT=10 to 800mA
LR1116A : IOUT=10 to 1000mA
1.225 1.275 V
Line Regulation ∆VOUT V
IN-VOUT=1V~13.75V, IOUT=10mA 0.1 0.6 %
Load Regulation ∆VOUT
VIN-VOUT=1V,
LR1116 : IOUT=10 to 800mA
LR1116A : IOUT=10 to 1000mA
2 3 %
Temperature stability ∆VOUT 0.50 %
Long Term Stability ∆VOUT 1000 hrs, TJ=125°C 0.3 %
Operating Input Voltage VIN 15 V
Adjustment Pin Current Iadj VIN≤15V 60 120 µA
Adjustment Pin Current
Change ∆Iadj
VIN-VOUT=1V~10V,
LR1116 : IOUT=10 to 800mA
LR1116A : IOUT=10 to 1000mA
1 5 µA
Minimum Load Current IOUT(min) V
IN=15V 2 5 mA
Output Current IOUT V
IN-VOUT=4.5V, TJ=25°C 800 950 1200 mA
Output Noise (%VOUT) eN B=10Hz~10KHz, TJ=25°C 0.003 %
Supply Voltage Rejection SVR IOUT=40mA, f=120Hz, TJ=25°C,
VIN-VOUT=2.5V, VRIPPLE=1Vpp 60 75 dB
Dropout Voltage VD
IOUT= 100mA
IOUT= 500mA
IOUT= 800mA
IOUT=1000mA
0.4
0.6
0.8
0.9
V
V
V
V
Thermal Regulation Ta=25°C, 30ms Pulse 0.01 0.10 %/W
LR1116/A LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 5
www.unisonic.com.tw QW-R102-022.F
ELECTRICAL CHARACTERISTICS (Cont.)
For LR1116/A-Fixed(VOUT＜3.0V)
PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT
1% VOUT×0.99 VOUT V
OUT×1.01
Output Voltage VOUT VIN=VOUT+1.5V, IOUT=10mA,
TJ=25°C 2% VOUT×0.98 VOUT×1.02 V
Output Voltage VOUT
VIN =(VOUT+2V)~15V
LR1116 : IOUT=0 to 800mA
LR1116A : IOUT=0 to 1000mA
VOUT×0.98 VOUT V
OUT×1.02 V
Line Regulation ∆VOUT V
IN =(VOUT+2V)~15V, Io=0mA 0.1 0.6 %
Load Regulation ∆VOUT
VIN =VOUT+2V
LR1116 : IOUT=0 to 800mA
LR1116A : IOUT=0 to 1000mA
2 3 %
Temperature stability ∆VOUT 0.5 %
Long Term Stability ∆VOUT 1000 hrs, TJ=125°C 0.3 %
Operating Input Voltage VIN I
OUT=100mA 15 V
Quiescent Current ID V
IN≤10V 5 10 mA
Output Current IOUT V
IN=VOUT+4.5V, TJ=25°C 800 950 1200 mA
Output Noise Voltage eN B=10Hz~10KHz, TJ=25°C 100 µV
Supply Voltage Rejection SVR IOUT=40mA, f=120Hz, TJ=25°C
VIN=VOUT+2.5V, VRIPPLE=1Vpp 60 75 dB
Dropout Voltage VD
IOUT= 100mA
IOUT= 500mA
IOUT= 800mA
IOUT=1000mA
0.4
0.6
0.8
0.9
V
V
V
V
Thermal Regulation Ta=25°C, 30ms Pulse 0.01 0.10 %/W
For LR1116/A-Fixed(VOUT≧3.0V)
PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT
Output Voltage VOUT V
IN=VOUT+1.5V, IOUT=10mA,TJ=25°C VOUT×0.99 VOUT V
OUT×1.01 V
Output Voltage VOUT
VIN=(VOUT+2V)~15V
LR1116 : IOUT=0 to 800mA
LR1116A : IOUT=0 to 1000mA
VOUT×0.98 VOUT V
OUT×1.02 V
Line Regulation ∆VOUT V
IN=(VOUT+2V)~15V, IOUT=0mA 0.1 0.6 %
Load Regulation ∆VOUT
VIN=VOUT+2V
LR1116 : IOUT=0 to 800mA
LR1116A : IOUT=0 to 1000mA
2 3 %
Temperature stability ∆VOUT 0.5 %
Long Term Stability ∆VOUT 1000 hrs, TJ=125°C 0.3 %
Operating Input Voltage VIN I
OUT=100mA 15 V
Quiescent Current ID V
IN≤10V 5 10 mA
Output Current IOUT V
IN=VOUT+4.5V, TJ=25°C 800 950 1200 mA
Output Noise Voltage eN B=10Hz ~ 10KHz, TJ=25°C 100 µV
Supply Voltage Rejection SVR IO=40mA, f=120Hz, TJ=25°C
VIN=VOUT+2.5V, VRIPPLE=1Vpp 60 75 dB
Dropout Voltage VD
IOUT= 100mA
IOUT= 500mA
IOUT= 800mA
IOUT=1000mA
0.3
0.4
0.6
0.7
V
V
V
V
Thermal Regulation Ta=25°C, 30ms Pulse 0.01 0.10 %/W
LR1116/A LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD 6
www.unisonic.com.tw QW-R102-022.F
TYPICAL PERFORMANCE CHARACTERISTICS
Fig.1 Reference Voltge vs. Temperature Fig.2 Output Voltage vs. Temperautre
-75
Junction Temperature(℃)
Reference Voltage (V)
Junction Temperature(℃)
-75
Output Voltage (V)
3.10
1.200
1.205
1.210
1.215
1.220
1.225
1.230
1.235
1.240
1.245
1.250
-50 -25 0 25 50 75 100125150175
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.60
-50 -25 0 25 50 75 100125150175
V
OUT
=3.3V
VOUT SET WITH 1% RESISTORS
Fig.3 Maximum Power Dissipation
25 65 105
4
6
8
10
Case Temperature(℃)
Power (W)
TO-263 & TO-252
SOT-223
2
45 85 125
0
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.
