LRC LR6156

Leshan Radio Co ., Ltd
LR6156
Dual 300mA High PSRR LDO
FEATURES
DESCRIPTION
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The LR6156 is a dual,low-noise,lowdropout regulator delivering at least 300mA of
continuous output current. The output voltage
for each regulator is set independently by
trimming.Voltages are selectable in 100mV
steps within a range of 1.5V to 4.5V.Typical
output noise is 47uVrms,and PSRR is 73dB
at 100Hz. The LR6156 includes two
independent logic-controlled shutdown inputs
and allows the output of each regulator to be
turned of independently.
Two low dropout voltage regulators
300mA output current for each LDO
20uA operating supply current per LDO
Low 47uVRMS output noise
Standby Mode: 0.1uA
Low 160mV dropout at 300mA load
73dB PSRR at 100Hz
Excellent Line regulation: 0.05%/V
Independent Shutdown controls
1.5V to 4.5V Factory-Preset Output
Output Current Limit
High Accuracy: ±2% (±1% customized)
APPLICATIONS
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Cellular phones
Cordless phones and radio
communication equipment
Battery Powered equipment
Notebook and hand-hold equipment
Wireless LAN
GPS receivers
The LR6156 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%.
The LR6156 is available in SOT-23-6
package which is lead(Pb)- free
ORDERING INFORMATION
LR6156 –X X XX
Package:R6:SOT-23-6
Operating temperature range
C:commercial standard
P:Pb free
Output Voltage:
Code
B
C
D
E
G
H
I
J
Vout1
1.5V
1.5V
1.5V
1.5V
1.8V
1.8V
1.8V
1.8V
Vout2
2.8V
3.0V
3.3V
4.0V
2.5V
2.8V
3.0V
3.3V
Code
M
O
P
Q
R
S
T
W
Vout1
2.8V
2.8V
2.8V
3.0V
3.0V
3.0V
3.3V
2.5V
The LR6156 includes high accuracy
voltage reference, error amplifier, current limit
circuit and output driver module.
Vout2
1.8V
2.8V
3.0V
2.5V
3.0V
3.3V
1.8V
3.0V
TYPICAL APPLICATION
APPLICATION HINTS
NOTE:Input capacitor (Cin=1uF) and Output
capacitor (Cout=1uF/3.3uF) arerecommended
in all application circuit.
1/7
Leshan Radio Co ., Ltd
MARKING DESCRIPTION
L: Product Code
X: Output Voltage
Code
B
C
D
E
G
H
I
J
Vout1
1.5V
1.5V
1.5V
1.5V
1.8V
1.8V
1.8V
1.8V
Vout2
2.8V
3.0V
3.3V
4.0V
2.5V
2.8V
3.0V
3.3V
Code
M
O
P
Q
R
S
T
Vout1
2.8V
2.8V
2.8V
3.0V
3.0V
3.0V
3.3V
Vout2
1.8V
2.8V
3.0V
2.5V
3.0V
3.3V
1.8V
Z: The Year of manufacturing,”7” stands for year
2007,”8” stands for year 2008,and “ 0 ” stands for
year 2010.
Z: The week of manufacturing. ”A” stands for week
1,”Z” stands for week 26,” A ” stands for week 27,”
Z ” stands for week 52.
PIN CONFIGURATION
Product Classification
LR6156-XXXX
Marking
L:Product Code
LXZZ
X:Output Voltage
ZZ:Data Code
Vss
Ground Pin
Vin
Supply Voltage Input
Vout1
CH1 Output Voltage
CE1
Chip Enable1
CE2
Chip Enable2
Vout2
CH2 Output Voltage
ABSOLUTE MAXIMUM RATING
Parameter
Max Input Voltage
Operating Junction
Temperature(Tj)
Ambient Temperature(Ta)
Power
SOT-23-6
Dissipation
Storage Temperature(Ts)
Lead Temperature & Time
Value
8V
125°C
-40°C -85°C
250mW
-40°C -150°C
260°C,10S
Note:
Exceed these limits to damage to the device.
Exposure to absolute maximum rating conditions may affect device reliability.
2/7
Leshan Radio Co ., Ltd
RECOMMENDED WORK CONDITIONS
Parameter
Value
Input Voltage Range
Ambient Temperature
Max. 6V
-40°C –85°C
ELECTRICAL CHARACTERISTICS
(Test Conditions: Cin=1uF,Cout=3.3uF,TA=25°C, unless otherwise specified. )
LR6156, For Arbitrary Output Voltage
Symbol
Parameter
Vin
Input Voltage
Vout
Output Voltage
Iout (Max.)
Maximun Output
Current
Vdrop
Dropout
Voltage,Vout≥2.8V
∆Vout
∆Vin ⋅ Vout
Line Regulation
∆Vout / ∆Iout
Load Regulation
Iss
∆Vout
∆T ⋅ Vout
Supply Current
Supply Current
(Srandby)
Output Voltage
Temperature
Coefficiency
PSRR
Ripple Rejection
Ilim
Short Current Limit
CE Pull down
Resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
Istandby
Rpd
Vceh
Vcel
en
Conditions
Min
Typ
Vin=Set Vout+1V
1mA≤Iout≤30mA
Vout
x0.98
Vout1
Vin-Vout=1V
300
Max
6
Vout
X1.02
Units
V
V
mA
Iout=100mA
50
80
mV
Iout=300mA
160
220
mV
Iout=40mA
2.8V≤Vin≤6V
0.05
0.2
%/V
30
50
mV
20
30
uA
0.1
1.0
uA
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
2.0
BW=10Hz~100kHz
1.5
0
±100
ppm/°C
73
dB
500
mA
5.0
47
10.0
MΩ
Vin
0.25
V
V
uVrms
3/7
Leshan Radio Co ., Ltd
BLOCK DIAGRAM
Explanation
LR6156 series are highly accurate ,Dual,low noise,CMOS low dropout voltage regulators.
The output voltage for each regulator is set independently by trimming. Voltages are selectable in
100mV steps within a range of 1.5V to 4.5V . It also can be customized on command.
LR6156 includes high accuracy voltage reference, error amplifier, current limit circuit and output
driver module.
LR6156 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%.
4/7
Leshan Radio Co ., Ltd
TYPICAL PERFORMANCE CHARACTERISTICS
1) Output Voltage vs. Output Current (with
output short protection)
2) Output Voltage vs. Input Voltage
Line Regulation
Current limit Vs. Vout
3.5
3.313
3
3.3125
VOUT(V)
Vout(V)
2.5
2
3.312
3.3115
1.5
3.311
1
3.3105
0.5
3
3.5
4
0
0
200
400
600
800
1000
1200
1400
5
5.5
6
1600
Iload(mA)
Iout=14(mA)
3) Dropout Voltage vs. Output Current
4) Ripple rejection vs. Frequency
PSRR
Dropout & Iout
80
180
160
70
Vout=3.3V
140
60
120
PSRR(dB)
Dropout(mV)
4.5
VIN(V)
100
80
60
50
40
30
40
20
20
10
0
0
50
100
150 200
Iout(mA)
250
300
350
Vout=3.3V
0
0.01
0.1
1
10
100
1000
Freq(KHz)
5/7
Leshan Radio Co ., Ltd
5) Line transient response
Cin=Cout=1uF
Iout=25mA
vout=3.3V
5V
Vv
Vin
4V
VV
Vout
5V
Vv
Vin
4V
VV
Vout
6) Load transient response
Cin=Cout=1uF Vin=4.5v Vout=3.3V
50mA
Output Current
1mA
50mA
1mA
Output Voltage
7) Start up from EN
Output Current
Output Voltage
8) Shut down from EN
Output
Output
EN
EN
6/7
Leshan Radio Co ., Ltd
PACKAGE LINE
SOT-23-6
Package dimension:
Unit: mm
7/7