Leshan Radio Co ., Ltd
LR8563
Low noise, fast response 300mA LDO regulator
General Description
Features
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Low Power Consumption: 15uA（Typ.）
Low Output Noise (47uVRMS)
Standby Mode: 0.1uA
LR8563 series is a group of positive
voltage output, low power consumption,
low dropout voltage regulator.
LR8563 can provide output value in the
range of 1.5V~4.5V every 0.1V step. It also
can be customized on command.
LR8563 includes high accuracy voltage
reference, error amplifier, current limit
circuit and output driver module with
discharge capability.
LR8563 has excellent load and line
transient response and good temperature
characteristics, which can assure the
stability of chip and power system. And it
uses trimming technique to guarantee
output voltage accuracy within±2%.
LR8563 is available in SOT-23-5, SC-70-5
packages which is lead free. It also can
available in these packages with lead.
Low Dropout Voltage0.16V@300mA
(Typ.)
High Ripple Rejection: 73dB@100Hz
(Typ.)
Low Temperature Coefficient:
±
100ppm/°C
Excellent Line Regulation: 0.05%/V
Build-in Chip Enable And Discharge
Circuit
Output Voltage Range: 1.5V~4.5V
(customized on command every 0.1V step)
Highly Accurate:
±2%
(±1%
customized)
Output Current Limit
Applications：
Power source for cellular phones and
various kind of PCSs
Battery Powered equipment
Power Management of MP3, PDA, DSC,
LR8563 Typical Application Circuit
LR8563 Typical Performance
Characteristics
Load Regulation
(VIN=4.5V)
3.350
3.300
LR8563
Vout(V)
3.250
3.200
3.150
3.100
3.050
3.000
0
50
100
150
Iout(mA)
200
250
300
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Leshan Radio Co ., Ltd
Block Diagram
Absolute Maximum Ratings：
Max input voltage ----------------------------------------------------------------------------8V
Junction Temperature (T
J
)
-----------------------------------------------------------------125°C
Output Current -------------------------------------------------------------------------------- 300mA
Power Dissipation
SOT-23-5---------------------------------------------------------------------------------------250mW
Storage Temperature (Ts) ------------------------------------------------------------------45°C½150°C
Recommended Work Conditions：
Item
Input Voltage Range
Ambient Temperature
Min
-40
Recommended
Max
6
85
unit
V
°C
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Leshan Radio Co ., Ltd
Electrical Characteristics
（Test
Conditions: Cin=1uF,Cout=3.4uF,TA=25°C, unless otherwise specified.
）
LR8563 for arbitrary output voltage
Symbol
Vin
Vout
Iout
(Max.)
Vdrop
1
Parameter
Input Voltage
Output Voltage
Maximun Output
Current
Dropout
Voltage,Vout≥2.8V
Conditions
Vin=Set Vout+1V
1mA≤Iout≤30mA
Vin-Vout=1V
Iout=100mA
Iout=300mA
Iout=40mA
2.8V≤Vin≤6V
Vin=Set Vout+1V
1mA≤Iout≤300mA
Vin=Set Vout+1V
Vin=Set Vout+1V
Vce=GND
Iout=30mA
F=100Hz,
Ripple=0.5Vp-p
Vin=Set Vout+1V
Vout=0V
Min
Vout
x0.98
300
Typ
Vout1
Max
6
Vout
X1.02
Units
V
V
mA
50
160
0.05
30
15
0.1
±100
80
220
0.2
50
25
1.0
mV
mV
%/V
mV
uA
uA
ppm/°C
∆
Vout
∆
Vin
⋅
Vou
∆
Vout
/
∆
Iout
Iss
Istandby
Line Regulation
Load Regulation
Supply Current
Supply Current
(Srandby)
Output Voltage
Temperature
Coefficiency
Ripple Rejection
Short Current Limit
CE Pull down
Resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
∆
Vout
∆
T
⋅
Vout
PSRR
Ilim
Rpd
Vceh
Vcel
En
70
500
2.0
1.5
0
5.0
10.0
Vin
0.25
47
dB
mA
MΩ
V
V
uVrms
BW=10Hz~100kHz
1) Vdrop=Vin1-(Vout2*0.98) Vout2 is the output voltage when Vin=Vout1+1.0V and Iout=300Ma
Vin1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input
voltage.
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