Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LR1012
CMOS IC
HIGH OPERATING VOLTAGE
CMOS VOLTAGE REGULATOR

DESCRIPTION
The UTC LR1012 series is high operating voltage regulator
using UTC CMOS technology. The max operating voltage of UTC
LR1012L is 16V so it works best in high-voltage applications.
Moreover, it is also suitable in constructing lowpower portable
devices including small current consumption, power-off function
and short-current protection.

FEATURES
* Operating current: Max. 1.8µA (3.0V)
* Output voltage: 2.0 ~ 6.0V, as 0.1V step
* ±2.0% output voltage accuracy
* Output current:
50mA capable @ 3.0V output, VIN=5V
75mA capable @ 5.0V output, VIN=7V
* Dropout voltage:120mV @VOUT = 5.0V, IOUT=10mA

ORDERING INFORMATION
Note:
Ordering Number
LR1012G-xx-AF5-R
xx: Output Voltage, refer to Marking Information.
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Copyright © 2015 Unisonic Technologies Co., Ltd
Package
SOT-25
Packing
Tape Reel
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LR1012

CMOS IC
PIN CONFIGURATION
PACKAGE
VOLTAGE CODE
SOT-25
18:1.8V
33: 3.3V
50: 5.0V
52: 5.2V
MARKING
PIN DESCRIPTION

PIN NO.
1
2
3
4
5

PIN NAME
VSS
VIN
VOUT
N.C.
ON/OFF
FUNCTION
GND
Input voltage
Output voltage
N.C. pin is electrically open. N.C. pin can be connected to VIN or VSS.
ON/OFF select
BLOCK DIAGRAM
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LR1012

CMOS IC
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
VIN
18
V
Input Voltage
VSS -0.3 ~ 18
V
VON/OFF
Output Voltage
VOUT
VSS -0.3 ~ VIN+0.3
V
Power Dissipation
PD
250
mW
Operating Temperature
TOPR
-40~+85
°C
Storage Temperature
TSTG
-40~+125
°C
Note: 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.

ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
Output Voltage (Note 1)
SYMBOL
VOUT (E)
Output Current (Note 2)
IOUT
Dropout Voltage (Note 3)
Vdrop
Line Regulation 1
Line Regulation 2
Load Regulation
Output Voltage temperature
coefficient (Note 4)
Current Consumption
∆VOUT1
∆VOUT2
∆VOUT3
∆VOUT
∆TA·VOUT
ISS
TEST CONDITIONS
VIN=VOUT(S)+2V, IOUT=10mA
2.0V≤VOUT(S)≤2.9V
3.0V≤VOUT(S)≤3.9V
VOUT(S)+2≤VIN≤16V
4.0V≤VOUT(S)≤4.9V
5.0V≤VOUT(S)≤6.0V
2.0V≤VOUT(S)≤2.4V
2.5V≤VOUT(S)≤2.9V
3.0V≤VOUT(S)≤3.4V
3.5V≤VOUT(S)≤3.9V
IOUT =10mA
4.0V≤VOUT(S)≤4.4V
4.5V≤VOUT(S)≤4.9V
5.0V≤VOUT(S)≤5.4V
5.5V≤VOUT(S)≤6.0V
VOUT(S)+1V≤VIN≤16V, IOUT=1mA
VOUT(S)+1V≤VIN≤16V, IOUT=1µA
2.0V≤VOUT(S)≤2.9V,
1µA≤IOUT≤20mA
3.0V≤VOUT(S)≤3.9V,
1µA≤IOUT≤30mA
VIN=VOUT(S)+2V
4.0V≤VOUT(S)≤4.9V,
1µA≤IOUT≤40mA
5.0V≤VOUT(S)≤6.0V,
1µA≤IOUT≤50mA
VIN = VOUT (S) + 1 V, IOUT = 10mA
-40°C ≤ TA ≤ 85°C
2.0V≤VOUT(S)≤2.7V
VIN=VOUT(S)+2V
2.8V≤VOUT(S)≤3.7V
no load
3.8V≤VOUT(S)≤5.1V
5.2V≤VOUT(S)≤6.0V
UNISONIC TECHNOLOGIES CO., LTD
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MIN
TYP
MAX UNIT
VOUT(S)
VOUT(S)
VOUT(S)
V
× 0.98
×1.02
30
mA
50
mA
65
mA
75
mA
0.46
0.95
V
0.32
0.68
V
0.23
0.41
V
0.19
0.35
V
0.16
0.30
V
0.14
0.27
V
0.12
0.25
V
0.11
0.23
V
5
30
mV
5
40
mV
6
30
mV
10
45
mV
13
65
mV
17
80
mV
±100
0.9
1.0
1.2
1.5
ppm/°C
1.6
1.8
2.1
2.5
µA
µA
µA
µA
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CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
Input Voltage
VIN
16
V
Current Consumption at
ISS2
VIN=VOUT(S)+2V, VON/OFF=0V, no load
0.1
0.5
µA
Poweroff
VIN=VOUT (S)+2V, R=1kΩ
ON/OFF Pin
VSH
2.0
V
Input Voltage For High Level
judged by VOUT output level
VIN=VOUT(S)+2V, RL=1kΩ
ON/OFF Pin
VSL
0.4
V
Input Voltage For Low Level
judged by VOUT output level
ON/OFF pin
ISH
VIN=VOUT(S)+2V, VON/OFF=7V
0.1
µA
Input Current at high Level
ON/OFF Pin
ISL
VIN=VOUT(S)+2V, VON/OFF=0V
-0.1
µA
Input Current at Low Level
Short-Circuit Current
IOS
VIN=VOUT(S)+2V, VOUT pin=0 V
40
mA
Notes:
1. VOUT(S)=Specified output voltage
VOUT(E)=Effective output voltage, i.e., the output voltage when fixing IOUT(=10 mA) and inputting VOUT(S)+2.0V.
2. Output current at which output voltage becomes 95% of VOUT(E) after gradually increasing output current.
3. Vdrop=VIN1-(VOUT(E)×0.98), where VIN1 is the Input voltage at which output voltage becomes 98% of VOUT(E) after
gradually decreasing input voltage.
4. Temperature change ratio for the output voltage [mV/°C] is calculated using the following equation.
VOUT
VOUT
[mV / ℃]  VOUT (S)[ V ] 
[ppm / ℃]  1000
TA
TA  VOUT
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CMOS IC
TERMS
CL (Output capacitors)
Cause the UTC LR1012L series can provide stable operation without CL.So the CL are used only to improve
transient response characteristics.And when CL is used, a low ESR (Equivalent Series Resistance) capacitor like
ceramic capacitor can also be used. CL can hence be removed in applications when transient response can be
negligible.
VOUT (Output voltage)
Unless the under conditions change, the accuracy of the output voltage is ±2.0% guaranteed under the specified
conditions for input voltage, which differs depending upon the product items, output current, and temperature.
∆VOUT1, ∆VOUT2 (Line regulations 1 and 2)
After a change in the input voltage with the output current remained unchanged, these values show how much
the output voltage changes.
∆VOUT3 (Load regulation)
After a change in the output current with the input voltage remained unchanged, these values show how much
the output voltage changes.
Dropout voltage (Vdrop)
When output voltage falls to 98% of VOUT (E) by gradually decreasing the input voltage (VIN), this value shows the
difference between the input voltage (VIN1) and the output voltage. Vdrop=VIN1-[VOUT (E)×0.98]

APPLICATION CIRCUIT
VIN
R1
Tr1
VIN
UTC LR1012L
ON/OFF
VOUT
VOUT
VSS
CIN
CL
GND
Output Current Boost Circuit
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LR1012
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CMOS IC
APPLICATION CIRCUIT(Cont.)
VIN
R1
Tr1
VIN
UTC LR1012L
ON/OFF
VOUT
VOUT
RL
VSS
CIN
VOUT
IO
Load
GND
Constant Current Boost Circuit
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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