UNISONIC TECHNOLOGIES CO., LTD
LR1107/E CMOS IC
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Copyright © 2013 Unisonic Technologies Co., Ltd QW-R102-033.I
600m
A
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 Pin Assignment Packing
Lead Free Halogen Free 1 2 3 4 5
LR1107L-xx-AA3-A-R LR1107G-xx-AA3-A-R SOT-223 G O I - - Tape Reel
LR1107L-xx-AE3-3-R LR1107G-xx-AE3-3-R SOT-23 O G I - - Tape Reel
LR1107L-xx-AB3-C-R LR1107G-xx-AB3-C-R SOT-89 G I O - - Tape Reel
LR1107L-xx-AB3-D-R LR1107G-xx-AB3-D-R SOT-89 I G O - - Tape Reel
LR1107L-xx-AF5-R LR1107G-xx-AF5-R SOT-25 I G SD S O Tape Reel
LR1107EL-xx-AF5-R LR1107EG-xx-AF5-R SOT-25 I G SD E O Tape Reel
Note: Pin Assignment: I:VIN O:VOUT G:GND SD: SD E: ERROR S：SET/ADJ
(1) R: Tape Reel
(2) refer to Pin Assignment
(3) AA3: SOT-223, AB3:SOT-89,
(3) AE3:SOT-23, AF5:SOT-25
(4) xx: reference to Marking Information
(5) G: Halogen Free, L: Lead Free
(6) Refer to PIN CONFIGURATION
LR1107EL-xx-AA3-A-R
(1) Packing Type
(2) Pin Assignment
(3) Package Type
(4) Voltage Code
(5) Lead Free
(6) Pin Situation
LR1107/E CMOS IC
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MARKING INFORMATION
PACKAGE VOLTAGE CODE MARKING
SOT-223
18:1.8V
25:2.5V
28:2.8V
2J:2.85V
33:3.3V
LR1107
Date Code
Voltage Code
L: Lead Free
G: Halogen Free
123
Pin Code
SOT-23 ESXX
Voltage Code L: Lead Free
G: Halogen Free
3
21
SOT-25
321
ESXX□
54
Voltage Code L: Lead Free
G: Halogen Free
SOT-89
□□□
LR1107
Date Code Voltage Code
L: Lead Free
G: Halogen Free
123
Pin Code
PIN CONFIGURATION
GND
VOUT
VIN
ERROR
SD
123
45
GND
VOUT
VIN
SET/ADJ
SD
123
45
SOT-25 (for LR1107E) SOT-25 (for LR1107) SOT-23
PIN DESCRIPTION
PIN NAME I/O DESCRIPTION
VIN Input supply
GND Ground
SD I 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
(for LR1107E) O 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.
SET/ADJ
(for LR1107) O Voltage-Setting Input. Connect an external resistive voltage-divider from VOUT to this pin to
set the output voltage.
VOUT O Output voltage
LR1107/E CMOS IC
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BLOCK DIAGRAM
VIN
SD
VOUT
SET/ADJ
GND
LR1107
80mV
LR1107/E CMOS IC
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ABSOLUTE MAXIMUM RATINGS (Note 1)
PARAMETER SYMBOL RATINGS UNIT
Input Voltage (Operating), (Note 10) VIN 2.5~7.0 V
Input Voltage (Survival) -0.3~+7.5 V
Shutdown Input Voltage VI
(
SHDN
)
-0.3~VIN+0.3 V
Output Voltage (Survival), (Note 4, 5) VOUT -0.3~+7.5 V
IOUT (Survival) Short Circuit Protected
Maximum Voltage for ERROR , SET/ADJ Pin V
IN+0.3 V
Maximum Operating Current (DC) 600 mA
Power Dissipation (Note 2) PD Internally Limited
Junction Temperature TJ 150 °C
Operating Temperature TOPR -40~+125 °C
Storage Temperature TSTG -65~+150 °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.)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP
(Note 3) MAX UNIT
Output Voltage Tolerance (Note 6) VOUT 0 mA ≤ IL ≤ 600mA
VOUT +1≤ VIN≤ 7.0V
-1.5
-3 0 +1.5
+3 %
Output Voltage Line Regulation (Note 6)
OUT
OUT
V
VΔVOUT+1V<VIN<7.0V 0.725 %
Output Voltage Load Regulation (Note 6) 10 mA < IL < 600mA 0.68 %
Dropout Voltage (Note 8) VD I
L = 600mA 300 500 mV
Ground Pin Current In Normal Operation
Mode IGND1 IL = 0 mA 200 μA
IL = 600mA 300
Ground Pin Current In Shutdown Mode IGND2 V
SD≤0.2V (Note 9) 0.02 5 μA
Peak Output Current IO
(
PEAK
)
(Note 2) 600 800 mA
SHORT CIRCUIT PROTECTION
Short Circuit Current ISC 2 A
OVER TEMPERATURE PROTECTION
Shutdown Threshold TSHDN
(
THR
)
165 °C
Thermal Shutdown Hysteresis TSHDN
(
HYS
)
10 °C
SHUTDOWN INPUT
Shutdown Threshold VSHDN Output = High VIN-0.3 VIN V
Output = Low 0 0.2 V
Turn-off Delay tD
(
OFF
)
I
L = 600mA 20 μs
Turn-on Delay tD
(
ON
)
I
L = 600mA 60 μs
SD Input Current ISD V
SD = VIN 1 nA
LR1107/E CMOS IC
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ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP
(Note 3) MAX UNIT
ERROR FLAG COMPARATOR (for LR1107E)
ERROR Flag Saturation VEF(SAT) I
SINK = 100μA 0.02 0.1 V
ERROR Flag Pin Leakage Current II(LEAK) 1 nA
Threshold VT (Note 7) 5 7 16 %
Threshold Hysteresis VTHR (Note 7) 2 4.2 8 %
Flag Reset Delay tD 17 μs
SET/ADJ Mode (for LR1107 5pins)
SET Voltage VSET Measured on ADJ,
IOUT =10mA 1.110 1.145 1.188 V
AC PARAMETERS
Ripple Rejection PSRR
VIN = VOUT + 1.5V
COUT=100uF, VOUT = 3.3V 60 dB
VIN = VOUT + 0.3V
COUT=100uF, VOUT = 3.3V 40 dB
Output Noise Density ρn
(
l/f
)
f = 120Hz 0.8 μV
Output Noise Voltage eN BW = 10Hz – 100kHz 150 μVrms
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. 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.
LR1107/E CMOS IC
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TYPICAL APPLICATION CIRCUIT
UTC LR1107E
VIN
GND
VOUT
INPUT
3.3V±10%
CIN
1µF COUT
22µF
ERROR
VOUT
2.5V, 500mA
ERROR
(NOTE) (NOTE)
SD SD
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.
UTC LR1107
VIN
GND
VOUT
INPUT
3.3V±10%
CIN
1µF COUT
22µF
SET/ADJ
VOUT
2.5V, 500mA
(NOTE)
SD SD
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.
