Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LR8XXYY
Preliminary
CMOS IC
150mA DUAL LDO
REGULATOR
6

DESCRIPTION
4
1
The UTC LR8XXYY 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 LR8XXYY 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.

5
2 3
SOT-23-6
(JDEDE TO-236)
1
DFN-6(1.6x1.6)
FEATURES
* Supply Current: TYP. 40μA (VR1, VR2)
* Standby Mode: TYP. 0.1μA (VR1, VR2)
* Low Dropout Voltage: TYP. 0.22V(IOUT=150mA, VOUT=2.8V)
* High Ripple Rejection: TYP. 70dB (f=1kHz), TYP. 65dB (f=10kHz)
* High Output Voltage Accuracy: ±1.0%
* Low Temperature-Drift Coefficient of Output Voltage:
TYP. ±80ppm/°C
* Excellent Line Regulation: TYP. 0.02%/V
* Built-in Fold Back Protection Circuit TYP. 40mA
(Current at short mode)
* Ceramic capacitors are recommended to be used with this IC
0.22μF or more

RDERING INFORMATION
Note:
Ordering Number
LR8XXYYBG-AE6-R
LR8XXYYBG-K06-1616-R
XXYY: Output Voltage, refer to Marking Information.
LR8XXYYBG-AE6-R
(1)Packing Type
(2)Package Type
(3)Green Package
(4)Discharge Function
(5)Voltage Code at VOUT2
(6)Voltage Code at VOUT1
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
Package
SOT-23-6
DFN-6(1.6×1.6)
Packing
Tape Reel
Tape Reel
(1) R: Tape Reel
(2) AE6: SOT-23-6, K06-1616: DFN-6(1.6×1.6)
(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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
Preliminary
CMOS IC
MARKING INFORMATIONS
PACKAGE
CODE
1
2
SOT-23-6
3
4
5
6
7
DFN-6(1.6×1.6)
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

PIN CONFIGURATION

PIN DESCRIPTION
SOT-23-6
1
2
3
4
5
6
PIN NO.
DFN-6(1.6×1.6)
3
2
1
6
4
5
MARKING
Y
1.2V
1.5V
1.8V
2.0V
2.5V
2.8V
3.0V
3.3V
3.6V
6 5
CE1
VDD
CE2
VOUT2
GND
VOUT1
1
2
Voltage Code at VOUT2
3
DESCRIPTION
Chip Enable Pin 1 (“H” Active)
Input Pin
Chip Enable Pin 2 (“H” Active)
Output Pin 2
Ground Pin
Output Pin 1
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Discharge Function
EXYB
Voltage Code at VOUT1
PIN NAME
4
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LR8XXYY

Preliminary
CMOS IC
BLOCK DIAGRAM
UTC LR8XXYYB
(With Auto Discharge )
VOUT1
CE1
+
Vref
Current Limit
VDD
GND
+
Vref
Current Limit
CE2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
VOUT2
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
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current 1
Output Current 2
RATINGS
UNIT
6.0
V
-0.3 ~ 6.0
V
-0.3 ~ VIN+0.3
V
180
mA
180
mA
SOT-23-6
420
mW
Power Dissipation
PD
DFN-6(1.6×1.6)
138
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.

SYMBOL
VIN
VCE
VOUT
IOUT1
IOUT2
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
otherwise noted. (TA=25°C))
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX
VOUT>2.0V
x 0.99
x 1.01
Output Voltage
VOUT TA=25°C
VOUT≤2.0V
-20
+20
Output Current
IOUT
150
0.8V≤VOUT<1.1V
10
∆VOUT
1.1V≤VOUT<1.6V
15
Load Regulation
1mA≤IOUT≤150mA
∆IOUT
1.6V≤VOUT<2.0V
15
15
2.0V≤VOUT≤3.6V
VOUT=0.8V
0.63
VOUT=0.9V
0.55
1.0V≤VOUT<1.2V
0.50
1.2V≤VOUT<1.4V
0.42
Dropout Voltage
VDIF
IOUT=150mA
1.4V≤VOUT<1.7V
0.37
1.7V≤VOUT<2.1V
0.30
2.1V≤VOUT<2.5V
0.25
2.5V≤VOUT<3.0V
0.23
3.0V≤VOUT≤3.6V
0.21
Supply Current
ISS
IOUT=0mA
50
60
Supply Current (Standby)
ISTANDBY VCE=0V
0.1
∆VOUT
Set VOUT+0.5V≤VIN≤5.0V
Line Regulation
0.02
∆VIN
f=1kHz, Ripple 0.2Vp-p,
Ripple Rejection
RR
VIN=Set VOUT+1.0V, IOUT=30mA
70
(In case VOUT≤2.0V, VIN=3.0V)
Input Voltage (Note 1)
VIN
5.25
∆V
OUT
Output Voltage Temperature
±80
-40°C≤Ta≤85°C
∆TOPT
Coefficient
Short Current
ILIM
VOUT=0V
40
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
unless
UNIT
V
mV
mA
mV
V
μA
μA
%/V
dB
V
ppm
mA
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Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
CE Pull-down Current
IPD
0.3
μA
CE Input Voltage “H”
VCEH
1.0
V
CE Input Voltage “L”
VCEL
0.4
V
Output Noise
en
BW=10Hz ~ 100kHz
60
μVrms
Nch ON Resistance For Auto
C Ver. (VR2)
10
Ω
RLOW VIN=4.0V, VCE=0V
Discharge (B/C/E Version Only)
Others
50
Ω
Notes: 1. The specification in boldface is checked and guaranteed by design engineering.
2. All of unit are tested and specified under load conditions such that TJ≈TA=25°C except for Output Noise,
Ripple Rejection and Output Voltage Temperature Coefficient items.
3. 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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LR8XXYY

Preliminary
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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