Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LR9XXYY
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CMOS IC
300mA SMALL DUAL LDO
REGULATOR

DESCRIPTION
6
The UTC LR9XXYY Series are a low dropout regulator with high
output voltage accuracy, low quiescent current, low dropout, and
high ripple rejection. This regulator is based on a CMOS process.
Each of these regulator ICs contains dual LDO regulator, both of
them includes a voltage reference, an error amplifier, resistors for
setting Output Voltage, a current limit circuit, and a chip enable
circuit.
The UTC LR9XXYY Series exhibit ultra excellent line transient
response and load transient response, thus they are very suitable
for the power supply for hand-held communication equipment.
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5
4
1
2 3
SOT-23-6
(JDEDE TO-236)
FEATURES
* Supply Current: TYP. 50μA×2 (VR1&VR2)
* Standby Current: TYP. 0.1μA×2 (VR1&VR2)
* Input Voltage Range: 1.4V~5.25V
* Output Voltage Range: 0.8V~3.7V (0.1V steps)
(For details, please refer to MARK SPECIFICATION TABLE)
* Output Voltage Accuracy: ±1.0% (VSET>2.0V, TOPT=25°C)
* Temperature-Drift Coefficient of Output Voltage: TYP. ±80ppm/°C
* Dropout Voltage: TYP. 0.25V (IOUT=300mA, VSET=2.5V)
* Ripple Rejection: TYP. 75dB (f=1kHz)
* Line Regulation: TYP. 0.02%/V
* Built-in Fold Back Protection Circuit: TYP. 60mA
(Current at short mode)
* Ceramic capacitors are recommended to be used with this IC:
1.0μF or more
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RDERING INFORMATION
Note:
Ordering Number
LR9XXYYBG-AE6-R
XXYY: Output Voltage, refer to Marking Information.
LR9XXYYBG-AE6-R
(1)Packing Type
(2)Package Type
(3)Green Package
(4)Discharge Function
(5)Voltage Code at VOUT2
(6)Voltage Code at VOUT1
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Copyright © 2015 Unisonic Technologies Co., Ltd
Package
SOT-23-6
Packing
Tape Reel
(1) R: Tape Reel
(2) AE6: SOT-23-6
(3) G: Halogen Free and Lead Free
(4) B: without auto-discharge function at off state
(5) YY: refer to Marking Information
(6) XX: refer to Marking Information
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LR9XXYY
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CMOS IC
MARKING INFORMATIONS
PACKAGE
SOT-23-6
CODE
1
2
3
4
5
6
7
8
9
VOLTAGE CODE
X
CODE
1.2V
1
1.5V
2
1.8V
3
2.0V
4
2.5V
5
2.8V
6
3.0V
7
3.3V
8
3.6V
9
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PIN CONFIGURATION
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PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
PIN NAME
CE1
VDD
CE2
VOUT2
GND
VOUT1
MARKING
Y
1.2V
1.5V
1.8V
2.0V
2.5V
2.8V
3.0V
3.3V
3.6V
DESCRIPTION
Chip Enable Pin 1 (“H” Active)
Input Pin
Chip Enable Pin 2 (“H” Active)
Output Pin 2
Ground Pin
Output Pin 1
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www.unisonic.com.tw
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LR9XXYY
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CMOS IC
BLOCK DIAGRAM
UTC LR9XXYYB
(With Auto Discharge )
VOUT1
CE1
+
Vref
Current Limit
VDD
GND
+
Vref
Current Limit
CE2
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VOUT2
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CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
6.0
V
Input Voltage (CE Pin)
VCE
-0.3~6.0
V
Output Voltage
VOUT1, VOUT2
-0.3~VIN +0.3
V
Output Current
IOUT1, IOUT2
400
mA
Power Dissipation
PD
420
mW
Operating Temperature Range
TOPR
-40 ~ 85
°C
Storage Temperature Range
TSTG
-55 ~ 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
(VIN=Set VOUT+1.0V for VOUT options greater than 1.5V, VIN=2.5V for VOUT≤1.5V, IOUT=1mA, CIN=COUT=0.22μF unless
otherwise noted. Values surrounded by boldface indicate the values under all temperature range, or -40°C≤TA≤85°C)
(TA=25°C)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
VSET>2.0V
x 0.99
x 1.01
V
TOPT=25°C
-20
+20
mV
VSET≤2.0V
Output Voltage
VOUT
x 0.97
x 1.03
VSET>2.0V
V
-40°C≤TOPT≤85°C
-60
+60
mV
VSET≤2.0V
300
Output Current
IOUT
mA
∆VOUT
40
1mA≤IOUT≤300mA
Load Regulation
15
mV
∆IOUT
VOUT=0.8V
0.56 0.72
VOUT=0.9V
0.51 0.65
1.0V≤VOUT<1.2V
0.46 0.59
1.2V≤VOUT<1.4V
0.39 0.50
V
Dropout Voltage
VDIF
IOUT=300mA
1.4V≤VOUT<1.7V
0.35 0.44
1.7V≤VOUT<2.1V
0.30 0.39
2.1V≤VOUT<2.5V
0.26 0.34
2.5V≤VOUT<3.0V
0.25 0.30
0.22 0.29
VOUT=0.8V
75
Supply Current
ISS
IOUT=0mA
50
μA
Supply Current (Standby)
ISTANDBY VCE=0V
0.1
1.0
μA
∆VOUT
VSET+0.5V≤VIN≤5.25V (VIN≥1.4V)
Line Regulation
0.02 0.10 %/V
∆VIN
f=1kHz, Ripple 0.2Vp-p
Ripple Rejection
RR
VIN=VSET+1V, IOUT=30mA
75
dB
(In case that VSET≤2.0V, VIN=3V)
1.40
5.25
Input Voltage (Note 1)
VIN
V
∆VOUT
Output Voltage Temperature
±80
ppm
-40°C≤TOPT≤85°C
∆TOPT
Coefficient
Short Current Limit
ISC
VOUT=0V
60
mA
0.6
CE Pull-down Current
IPD
0.3
μA
1.0
CE Input Voltage “H”
VCEH
V
0.4
CE Input Voltage “L”
VCEL
V
Output Noise
en
BW=10Hz~100kHz
75
μVrms
Low Output Nch Tr. ON
50
Ω
RLOW VIN=4.0V, VCE=0V
Resistance (of B version)
Notes: 1. The maximum Input Voltage of the ELECTRICAL CHARACTERISTICS is 5.25V. In case of exceeding this
specification, the IC must be operated on condition that the Input Voltage is up to 5.5V and the total
operating time is within 500hrs.
2. All of unit are tested and specified under load conditions such that TJ≈TOPT=25°C except for Output Noise,
Ripple Rejection, Output Voltage Temperature Coefficient and Thermal Shutdown.
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CMOS IC
TYPICAL APPLICATION 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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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