Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LR1102
CMOS IC
LOW NOISE 150mA LDO
REGULATOR

DESCRIPTION
The UTC LR1102 families are CMOS-based voltage
regulator ICs with extremely low supply current, high output
voltage accuracy, high Ripple Rejection and chip enable circuit.
These ICs performance are excellent and with SOT-25
package, thus these ICs are very suitable for hand-held
communication equipment.

FEATURES
* Ultra-Low Supply Current : Typ. 35µA
* Standby Mode: Typ. 0.1µA
* Low Dropout Voltage: Typ. 0.2V (IOUT = 100mA)
* Excellent Line Regulation: Typ. 0.05%/V
* High Ripple Rejection: Typ. 70dB (f = 1kHz)

ORDERING INFORMATION
Ordering Number
Halogen Free
LR1102XG-xx-AF5-R
Note:
Pin Assignment: I: VDD O: VOUT
Package
SOT-25
G: GND C: CE/ CE
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Copyright © 2015 Unisonic Technologies Co., Ltd
1
I
Pin Assignment
2
3
4
5
G
C
N
O
Packing
Tape Reel
N: No Connection
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CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LR1102A
25:2.5V
27:2.7V
28:2.8V
2J:2.85V
30:3.0V
33:3.3V
35:3.5V
50:5.0V
LR1102B
18: 1.8V
25:2.5V
27:2.7V
28:2.8V
2J:2.85V
30:3.0V
33:3.3V
35:3.5V
50:5.0V
MARKING
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
VDD
GND
CE/CE
NC
VOUT
DESCRIPTION
Input Pin
Ground Pin
Chip Enable Pin
No Connection
Output Pin
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CMOS IC
BLOCK DIAGRAM
LR1102B-XX
1
5
V OUT
V DD
+
VREF
CE
3
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GND
Current Limit
2
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CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
9
V
Input Voltage
VCE
-0.3 ~ VIN+0.3
V
Output Voltage
VOUT
-0.3 ~ VIN+0.3
V
Output Current
IOUT
200
mA
Power Dissipation
PD
250
mW
Junction Temperature
TJ
+125
°С
Operating Temperature
TOPR
-40 ~ +85
°С
Storage Temperature
TSTG
-55 ~ +125
°С
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
LR1102A-XX (TOPR=25°С)
PARAMETER
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
Supply Current (Standby)
Line Regulation
SYMBOL
VOUT
IOUT
∆VOUT/∆IOUT
VDIF
ISS
IST-BY
∆VOUT/∆VIN
Ripple Rejection
RR
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-up Resistance
CE Input Voltage ”H”
CE Input Voltage ”L”
Output Noise
VIN
∆VOUT/∆T
ILIMIT
RPU
VCEH
VCEL
eN
TEST CONDITIONS
MIN
TYP
VIN=Set VOUT + 1V, 1mA≤IOUT≤30mA
VOUTx0.98
VIN=Set VOUT + 1V, 0mA≤IOUT≤150mA
VOUTx0.97
VIN=9V, 0mA≤IOUT≤150mA
VOUTx0.97
Refer to the Electrical Characteristics by Output Voltage
VIN=Set VOUT + 1V, 1mA≤IOUT≤80mA
12
Refer to the Electrical Characteristics by Output Voltage
VIN=Set VOUT + 1V
35
VIN=VCE=Set VOUT + 1V
0.1
Set VOUT + 0.5V≤VIN≤8V, IOUT=30mA
0.05
f=1kHz, Ripple 0.5Vp-p,
70
VIN=Set VOUT+ 1V
2
IOUT = 30mA, -20°С≤TOPR≤85°С
VOUTx1.03
UNIT
V
V
V
40
mV
70
1.0
0.20
μA
μA
%/V
VOUTx1.02
VOUTx1.03
dB
8
V
±100
VOUT=0V
2.5
1.5
0.00
BW = 10Hz ~ 100kHz
MAX
200
5.0
ppm/°С
10.0
VIN
0.25
30
mA
MΩ
V
V
μVrms
LR1102B-XX (TOPR=25°С)
PARAMETER
Output Voltage
Output Voltage
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
Supply Current (Standby)
Line Regulation
Ripple Rejection
SYMBOL
VOUT
VOUT
VOUT
IOUT
∆VOUT/∆IOUT
VDIF
ISS
IST-BY
∆VOUT/∆VIN
RR
TEST CONDITIONS
MIN
TYP
VIN=Set VOUT + 1V, 1mA≤IOUT≤30mA
VOUTx0.98
VIN=Set VOUT + 1V, 0mA≤IOUT≤150mA
VOUTx0.97
VIN=9V, 0mA≤IOUT≤150mA
VOUTx0.97
Refer to the Electrical Characteristics by Output Voltage
VIN=Set VOUT + 1V, 1mA≤IOUT≤80mA
12
Refer to the Electrical Characteristics by Output Voltage
VIN=Set VOUT + 1V
35
VIN= Set VOUT + 1V, VCE=GND
0.1
Set VOUT + 0.5V≤VIN≤8V, IOUT=30mA
0.05
f=1kHz, Ripple 0.5Vp-p
70
VIN=Set VOUT + 1V
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MAX
VOUTx1.02
VOUTx1.03
VOUTx1.03
UNIT
V
V
V
40
mV
70
1.0
0.20
μA
μA
%/V
dB
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ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Resistance
CE Input Voltage ”H”
CE Input Voltage ”L”
Output Noise

CMOS IC
SYMBOL
VIN
TEST CONDITIONS
MIN
2
∆VOUT/∆T IOUT = 30mA, -20°С≤TOPR≤85°С
ILIMIT
RPD
VCEH
VCEL
eN
TYP
MAX
8
±100
VOUT=0V
2.5
1.5
0.00
BW = 10Hz ~ 100kHz
200
5.0
UNIT
V
ppm/°С
10.0
VIN
0.25
30
mA
MΩ
V
V
μVrms
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
(TOPR=25°С)
PARAMETER
Output Current
SYMBOL
IOUT
TEST CONDITIONS
VIN -VOUT = 1.0V
1.8≤VOUT≤5.0
1.8≤VOUT≤2.7
2.8≤VOUT≤3.3
3.4≤VOUT≤5.0
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MIN
150
TYP
MAX
0.18
0.18
0.15
0.30
0.25
0.22
UNIT
mA
V
V
V
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CMOS IC
TEST CIRCUITS
CE
CE
3
3
IN
VDD
VOUT
1
UTC LR1102-XX
5
OUT
IN
VDD
V OUT
1
UTC LR1102-XX
OUT
5
I OUT
P.G
2
2
GND
Fig.3 Ripple Rejection, Line Transient
Response Test Circuit
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1µF
GND
I1
I2
Fig.4 Load Transient Response Test Circuit
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CMOS IC
TYPICAL APPLICATION
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CMOS IC
TYPICAL CHARACTERISTICS
Output Voltage, VOUT (V)
Output Voltage, VOUT (V)
1. Output Voltage vs. Output Current
2. Dropout Voltage vs. Output Current
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CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
Output Voltage, VOUT (V)
Output Voltage, VOUT (V)
3. Output Voltage vs. Temperature
LR1102-5.0V
5.10
VIN = 6.0V
IOUT = 30mA
Output Voltage, VOUT (V)
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
-50
-25
0
25
50
75
100
Temperature, TOPR (°С)
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CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
Supply Current, ISS (μA)
4. Supply Current vs. Input Voltage
5. Supply Current vs. Temperature
LR1102-XX
50
VIN = VOUT+1V
45
40
35
30
25
20
-50
50
0
100
Temperature, TOPR (°С)
Dropout Voltage, VD (V)
6. Dropout Voltage vs. Set Output Voltage
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CMOS IC
TYPICAL CHARACTERISTICS(Cont.)

Ripple Rejection, RR (dB)
Ripple Rejection, RR (dB)
7. Ripple Rejection vs. Frequency
8. Ripple Rejection vs. Input Voltage (DC bias)
LR1102-3.0V
LR1102-3.0V
80
80
60
IOUT = 1mA
COUT = 2.2μF
70
Ripple Rejection, RR (dB)
Ripple Rejection, RR (dB)
70
50
40
f = 400Hz
30
f = 1kHz
20
10
3.2
3.3
60
50
40
f = 400Hz
30
f = 1kHz
20
10
f = 10kHz
0
3.1
IOUT = 10mA
COUT = 2.2μF
3.4
f = 10kHz
0
3.1
3.5
3.2
Input Voltage, VIN (V)
3.3
3.4
3.5
Input Voltage, VIN (V)
9. Load Transient Response
LR1102-3.0V
VIN = 4V
CIN = Tantalun 1μF
COUT =Tantalum 4.7μF
Output Voltage, VOUT (V)
3.3
150
100
Output Current
3.2
50
3.1
0
Output Voltage
3.0
-50
-100
2.9
Output Current, IOUT (mA)
3.4
-150
2.8
0
2
4
6
8
10
12
14
16
18
20
Time, t (μs)
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CMOS IC
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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