Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LR1107/E
CMOS IC
600mA FAST ULTRA LOW
DROPOUT LINEAR REGULATOR

DESCRIPTION
The UTC LR1107/E operate from a +2.5V ~ +7.0V input supply
as fast ultra low-dropout linear regulators. Wide output voltage range
options are available. The fast response characteristic to make UTC
LR1107/E suitable for low voltage microprocessor application. The
low quiescent current operation and low dropout quality caused by the
CMOS process.
The UTC LR1107/E has ultra low dropout voltage; 300mV at
600mA load current typically.
The ground pin current is typically 200uA at 1mA load current.
SET/ADJ Mode (for LR1107): Connect an external resistive
voltage-divider from VOUT to this pin to set the output voltage from
1.145V to 5V.
ERROR Flag (for LR1107E): When the output voltage drops 10% below nominal value Error flag goes low.
Output Voltage Precision: Multiple output voltage options are available and ranging from 1.2V ~ 5.0V at room
temperature with a guaranteed accuracy of ±1.5%, and ±3.0% when varying line, load and temperature.

FEATURES
* Ultra Low Dropout Voltage
* Low Ground Pin Current
* 0.68% Load Regulation
* The Guaranteed Output Current is 600mA DC
* Output Voltage Accuracy ± 1.5%

* ERROR Flag Indicates Output Status
* VOUT can be Adjusted From 1.145V to 5V.
* Low Output Capacitor Required
* Overtemperature Protection and Overcurrent Protection
ORDERING INFORMATION
Ordering Number
Package
LR1107G-xx-AA3-A-R
LR1107G-xx-AE3-3-R
LR1107G-xx-AB3-B-R
LR1107G-xx-AB3-C-R
LR1107G-xx-AB3-D-R
LR1107G-xx-AF5-R
LR1107EG-xx-AF5-R
SOT-223
SOT-23
SOT-89
SOT-89
SOT-89
SOT-25
SOT-25
Note: Pin Assignment: I:VIN O:VOUT G:GND
SD: SD
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1
G
O
O
G
I
I
I
Pin Assignment
2
3
4
O
I
G
I
G
I
I
O
G
O
G
S
SD
G
E
SD
5
O
O
Packing
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Tape Reel
E: ERROR S:SET/ADJ
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QW-R102-033.K
LR1107/E

CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
LR1107G
Pin Code
SOT-223
Voltage Code
Date Code
1
2
3
3
SOT-23
ESXXG
Voltage Code
18:1.8V
2
1
25:2.5V
28:2.8V
SOT-25
(LR1107E)
2J:2.85V
33:3.3V
50: 5.0V
SOT-25
(LR1107)
Date Code
SOT-89
□□□
LR1107G
1

3
PIN CONFIGURATION
VOUT
5
1
2
ERROR
4
VOUT
3
1
5
SET/ADJ
4
2
3
VIN GND SD
VIN GND SD
SOT-25 (for LR1107E)

2
Pin Code
Voltage Code
SOT-25 (for LR1107)
SOT-23
PIN DESCRIPTION
PIN NAME
VIN
GND
I/O
SD
I
ERROR
(for LR1107E)
SET/ADJ
(for LR1107)
VOUT
DESCRIPTION
Input supply
Ground
O
O
O
Shutdown LR1107/E enable; when the SD pin connects to GND will shutdown the
LR1107/E; At normal operation, SD must be tied to VDD through a 10KΩ pull up resistor.
Error flag, active low; when the output dropout of regulation due to low input voltage, the
LR1107E produces a logic low signal at the ERROR pin.
Voltage-Setting Input. Connect an external resistive voltage-divider from VOUT to this pin to
set the output voltage.
Output voltage
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QW-R102-033.K
LR1107/E

CMOS IC
BLOCK DIAGRAM
VIN
SD
VOUT
SET/ADJ
80mV
GND
LR1107
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QW-R102-033.K
LR1107/E

CMOS IC
ABSOLUTE MAXIMUM RATINGS (Note 1)
PARAMETER
Input Voltage (Operating), (Note 10)
Input Voltage (Survival)
Shutdown Input Voltage
Output Voltage (Survival), (Note 4, 5)
IOUT (Survival)
SYMBOL
VIN
VI(SHDN)
VOUT
RATINGS
2.5~7.0
-0.3~+7.5
-0.3~VIN+0.3
-0.3~+7.5
Short Circuit Protected
UNIT
V
V
V
V
VIN+0.3
V
600
Internally Limited
150
-40~+125
-65~+150
mA
Maximum Voltage for ERROR , SET/ADJ Pin
Maximum Operating Current (DC)
Power Dissipation (Note 2)
Junction Temperature
Operating Temperature
Storage Temperature

PD
TJ
TOPR
TSTG
°C
°C
°C
ELECTRICAL CHARACTERISTICS
Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature
range. (TJ = 25°C, VIN = VO(NOM) + 1V, IL = 10 mA, COUT = 22μF, VSD = VIN-0.3V, unless otherwise specified.)
TYP
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
UNIT
(Note 3)
Output Voltage Tolerance (Note 6)
Output Voltage Line Regulation (Note 6)
Output Voltage Load Regulation (Note 6)
Dropout Voltage (Note 8)
Ground Pin Current In Normal Operation
Mode
Ground Pin Current In Shutdown Mode
Peak Output Current
SHORT CIRCUIT PROTECTION
Short Circuit Current
OVER TEMPERATURE PROTECTION
Shutdown Threshold
Thermal Shutdown Hysteresis
SHUTDOWN INPUT
VOUT
VOUT
VOUT
VD
IGND1
IGND2
IO(PEAK)
-1.5
-3
0
+1.5
+3
0.725
10 mA < IL < 600mA
0.68
IL = 600mA
IL = 0 mA
IL = 600mA
VSD≤0.2V (Note 9)
(Note 2)
300
200
300
0.02
800
600
%
%
%
500
mV
μA
5
μA
mA
ISC
2
A
TSHDN(THR)
TSHDN(HYS)
165
10
°C
°C
Shutdown Threshold
VSHDN
Turn-off Delay
Turn-on Delay
tD(OFF)
tD(ON)
SD Input Current
0 mA ≤ IL ≤ 600mA
VOUT +1≤ VIN≤ 7.0V
VOUT+1V<VIN<7.0V
ISD
Output = High
Output = Low
IL = 600mA
IL = 600mA
VSD = VIN
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VIN-0.3
VIN
0
20
60
1
0.2
V
V
μs
μs
nA
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LR1107/E

CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
(Note 3)
MAX
UNIT
0.1
V
ERROR FLAG COMPARATOR (for LR1107E)
ERROR Flag Saturation
VEF(SAT)
ERROR Flag Pin Leakage Current
II(LEAK)
Threshold
Threshold Hysteresis
Flag Reset Delay
SET/ADJ Mode (for LR1107 5pins)
VT
VTHR
tD
SET Voltage
VSET
ISINK = 100μA
0.02
1
(Note 7)
(Note 7)
Measured on ADJ,
IOUT =10mA
nA
5
2
7
4.2
17
16
8
%
%
μs
1.110
1.145
1.188
V
AC PARAMETERS
Ripple Rejection
Output Noise Density
Output Noise Voltage
PSRR
ρn(l/f)
eN
VIN = VOUT + 1.5V
COUT=100uF, VOUT = 3.3V
VIN = VOUT + 0.3V
COUT=100uF, VOUT = 3.3V
f = 120Hz
BW = 10Hz – 100kHz
60
dB
40
dB
0.8
150
μV
μVrms
Notes: 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.
Conditions for which the device is intended to be functional is indicated by operating ratings, but specific
performance limits isn’t be guaranteed. To make sure of specifications and test conditions, read Electrical
Characteristics. Only for the test conditions listed the guaranteed specifications can be applied. When the
device is not operated under the listed test conditions some performance characteristics may degrade.
2. Devices must be derated based on package thermal resistance at elevated temperatures.
3. The most likely parametric norm represents at 25°C.
4. The LR1107/E output must be diode-clamped to ground. If used in a dual-supply system where the
regulator load is returned to a negative supply.
5. Between the VIN and VOUT terminals the output PMOS structure contains a diode. This diode is reverse
biased normally. If the voltage at the output terminal is forced to be higher than the voltage at the input
terminal this diode will get forward biased. This diode can withstand 650mA of peak current and 120mA of
DC current typically.
6. Output voltage line regulation is the change in output voltage from the nominal value which is due to
change in the input line voltage. Which is defined as the change in output voltage from the nominal value
due to change in load current is output voltage load regulation. The load regulation and line regulation
specification include the typical number only. But, the limits for load and line regulation are included in the
output voltage tolerance specification.
7. ERROR Flag hysteresis and threshold are specified as regulated output voltage’s percentage.
8. At which the output drops 2% below the normal value dropout voltage is defined as the minimum input to
output differential voltage. Only to output voltages of 2.5V and above dropout voltage specification applies.
For output voltages below 2.5V, since the minimum input voltage is 2.5V, the drop-out voltage is nothing
but the input to output differential.
9. Specification has been tested at −40°C≤TJ≤ 85°C cause under shutdown conditions the temperature rise
of the device is negligible.
10. The minimum operating VIN value is equal to VOUT(NOM) + VDROPOUT] or 2.5V, just the greater.
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QW-R102-033.K
LR1107/E

CMOS IC
TYPICAL APPLICATION CIRCUIT
INPUT
3.3V±10%
CIN
1µF
SD
(NOTE)
VIN
VOUT
SD
UTC LR1107E
ERROR
VOUT
2.5V, 500mA
ERROR
(NOTE)
COUT
22µF
GND
Note: SD and ERROR pins must be pulled high through a 10kΩ pull-up resistor. Connect the ERROR pin to
ground if this function is not used.
INPUT
3.3V±10%
CIN
1µF
SD
(NOTE)
VIN
VOUT
SD
UTC LR1107
SET/ADJ
VOUT
2.5V, 500mA
COUT
22µF
GND
Note: SD pins must be pulled high through a 10kΩ pull-up resistor.
Connect the SET/ADJ pin to ground if this function is not used.
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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www.unisonic.com.tw
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QW-R102-033.K
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