LRC LR8558

Leshan Radio Co ., Ltd
LR8558
Low noise, fast response 500mA LDO regulator
General Description:
Features:
•
•
•
•
•
•
•
•
•
Low Power Consumption: 75uA(Typ.)
Low output noise (47uVRMS)
Standby Mode: 0.1uA
Low dropout Voltage: [email protected] (Typ.)
High Ripple Rejection: [email protected] (Typ.)
Low Temperature Coefficient: ±100ppm/°C
Excellent Line regulation: 0.05%/V
Build-in chip enable and discharge circuit
Output Voltage Range: 1.2V~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,
Mouse, PS2 Games
•
•
LR8558 series is a group of positive
voltage output, low power consumption, low
dropout voltage regulator.
LR8558 can provide output value in the
range of 1.2V~4.5V every 0.1V step. It also
can be customized on command.
LR8558 includes high accuracy voltage
reference, error amplifier, current limit circuit
and output driver module with discharge
capability.
LR8558 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%.
LR8558 is available in SOT-23-5, SC-82
packages which is lead free. It also can
available in these packages with lead.
Reference Voltage Source
Regulation after Switching Power
L8558 Ty pical Performance
Characteristics:
LR8558 Typical Application Circuit
L58558
Vout(V)
L58558-2.8V Output
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2
0
200
400
600
Iload(mA)
1/11
Leshan Radio Co ., Ltd
Selection Guide:
LR8558-XX X X
Package Type:
SA:SOT-89-3
SB:SOT-89-3
RM:SOT-23-3
RN:SOT-23-5
T: TO-92
Features:
P:Standard(defualt、lead free)
C:Customized
Output Voltage:
12……1.2V
15……1.5V
28……2.8V
30……3.0V
35……3.5V
……
45……4.5V
Pin Assignment:
LR8558-XXPSA
LR8558-XXPSB
LR8558-XXPRM
LR8558-XXPRN
LR8558-XXPT
2/11
Leshan Radio Co ., Ltd
Pin Description:
Pin Number
SOT-89-3
(A)
SOT-89-3
(B)
1
3
2
3
2
1
SOT-23-5
SOT-23-3
TO-92
5
1
2
3
4
2
3
1
3
1
2
Symbol
Function
Vout
Vin
Vss
CE
NC
Output pin
Input Pin
Ground Pin
Chip Enable Pin
No Connection
Product Classification:
Output
Voltage
Package
Type
Product
Name
Package
Type
Product
Name
Package
Type
Product
Name
1.2V
1.5V
1.8V
2.1V
2.5V
2.8V
3.0V
3.2V
3.3V
3.5V
SOT-89-3A
SOT-89-3A
SOT-89-3A
SOT-89-3A
SOT-89-3A
SOT-89-3A
SOT-89-3A
SOT-89-3A
SOT-89-3A
SOT-89-3A
LR8558-12PSA
LR8558-15PSA
LR8558-18PSA
LR8558-21PSA
LR8558-25PSA
LR8558-28PSA
LR8558-30PSA
LR8558-32PSA
LR8558-33PSA
LR8558-35PSA
SOT-89-3B
SOT-89-3B
SOT-89-3B
SOT-89-3B
SOT-89-3B
SOT-89-3B
SOT-89-3B
SOT-89-3B
SOT-89-3B
SOT-89-3B
LR8558-12PSB
LR8558-15PSB
LR8558-18PSB
LR8558-21PSB
LR8558-25PSB
LR8558-28PSB
LR8558-30PSB
LR8558-32PSB
LR8558-33PSB
LR8558-35PSB
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
LR8558-12PRN
LR8558-15PRN
LR8558-18PRN
LR8558-21PRN
LR8558-25PRN
LR8558-28PRN
LR8558-30PRN
LR8558-32PRN
LR8558-33PRN
LR8558-35PRN
4.5V
SOT-89-3A
LR8558-45PSA
SOT-89-3B
LR8558-45PSB
SOT-23-5
LR8558-45PRN
Output
Voltage
Package
Type
Product
Name
Package
Type
Product
Name
1.2V
1.5V
1.8V
2.1V
2.5V
2.8V
3.0V
3.2V
3.3V
3.5V
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
LR8558-12PRM
LR8558-15PRM
LR8558-18PRM
LR8558-21PRM
LR8558-25PRM
LR8558-28PRM
LR8558-30PRM
LR8558-32PRM
LR8558-33PRM
LR8558-35PRM
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
LR8558-12PT
LR8558-15PT
LR8558-18PT
LR8558-21PT
LR8558-25PT
LR8558-28PT
LR8558-30PT
LR8558-32PT
LR8558-33PT
LR8558-35PT
4.5V
SOT-23-3 L58558-45PRM
TO-92
LR8558-45PT
3/11
Leshan Radio Co ., Ltd
Product Marking information:
SOT23-5
SOT-23-3
LR8558
SOT-89-3(A)
SOT-89-3(B)
TO-92
1: Output voltage
2.:Lot NO.
4/11
Leshan Radio Co ., Ltd
Block Diagram:
Absolute Maximum Ratings:
Max input voltage------------------------------------------------------------------------------------10V
Junction Temperature (TJ) ------------------------------------------------------------------------125°C
Output Current --------------------------------------------------------------------------------------- 500mA
Power Dissipation
SOT-23-5 -------------------------------------------------------------------------------------------250mW
SOT-23-3 -------------------------------------------------------------------------------------------200mW
SOT-89-3 -------------------------------------------------------------------------------------------500mW
TO-92 ------------------------------------------------------------------------------------------------350mW
Storage Temperature (Ts)--------------------------------------------------------------------------45°C~150°C
Recommended Work Conditions:
Item
Input Voltage Range
Ambient Temperature
Min
Recommended
-40
Max
8
85
unit
V
°C
Electrical Characteristics:
(Test Conditions: Cin=1uF,Cout=3.4uF,TA=25°C, unless otherwise specified. )
LR8558, for arbitrary output voltage
Symbol
Parameter
Vin
Input Voltage
Conditions
Min
Vout
Output Voltage
Vin=Set Vout+1V
1mA≤Iout≤30mA
Vout
x0.98
Iout (Max.)
Maximun Output
Current
Vin-Vout=1V
500
Typ
Vout1
Max
Units
8
Vout
X1.02
V
V
mA
ge
5/11
Leshan Radio Co ., Ltd
Dropout
Voltage,Vout≥2.8V
Iout=100mA
Iout=300mA
Iout=500mA
88
270
460
120
350
600
mV
mV
mV
∆Vout
∆Vin ⋅ Vout
Line Regulation
Iout=40mA
2.8V≤Vin≤8V
0.05
0.2
%/V
∆Vout / ∆Iout
Load Regulation
20
40
mV
Iss
75
90
uA
0.1
1.0
uA
∆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
Vdrop
1
Istandby
Rpd
Vceh
Vcel
en
1.
Vin=Set Vout+1V
1mA≤Iout≤500mA
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
±100
ppm/°C
65
dB
200
mA
5.0
1.5
0
BW=10Hz~100kHz
47
10.0
MΩ
Vin
0.25
V
V
uVrms
Vdrop=Vin1-(Vout2*0.98) Vout2 is the output voltage when Vin=Vout1+1.0V and Iout=300mA or Iout=500mA.
Vin1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input
voltage.
Typical Application Circuit:
Application hints:
NOTE1: Input capacitor (Cin=1uF) is
recommended in all application circuit.
LR8558
NOTE2: Output capacitor (Cout=3.3uF/4.7uF) is
recommended in all application to
assure the stability of circuit.
Explanation:
LR8558 series is a group of positive voltage output, low noise, low power consumption, low
dropout voltage regulator.
LR8558 can provide output value in the range of 1.2V~4.5V every 0.1V step. It also can be
customized on command.
LR8558 includes high accuracy voltage reference, error amplifier, current limit circuit and
output driver module.
LR8558 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%.
6/11
Leshan Radio Co ., Ltd
Typical Performance Characteristics:
1) Output Voltage vs. Output Current (with output
short protection)
2) Output Voltage vs. Input Voltage
3
2
1.8
2.5
1.6
1.4
Vout(V)
Vout(V)
2
1.5
Vin=3.3V
1
0.5
1.2
Iload=0
Iload=28mA
1
0.8
Vin=3.8V
0.6
Vin=4.8V
0.4
0.2
0
0
200
400
600
800
1000
0
1200
0
2
Iload(mA)
6
8
10
Vin(V)
3) Dropout Voltage vs. Output Current
4) Ripple rejection vs. Frequency
0.7
90
80
0.6
Vout=2.8V
70
Vout=1.8V
60
PSRR(dB)
0.5
Dropout(V)
4
0.4
0.3
50
40
30
0.2
20
0.1
10
0
0
100
200
300
Iload(mA)
400
500
600
0
0.01
0.1
1
10
100
Freq(kHz)
7/11
Leshan Radio Co ., Ltd
5) Line transient response
Iout=1mA Cout=1uF
Iout=50mA Cout=1uF
5V
4V
5V
Input Voltage
Input Voltage
4V
Output Voltage
Output Voltage
6) Load transient response
Vin=4.6V Cout=1uF
Vin=4.6V Cout=4.7uF
Output Voltage
Output Voltage
50mA
1mA
Output Current
50mA
Output Current
1mA
Vin=5.8V Cout=1uF
Vin=5.8V Cout=1uF
60mA
250mA
Output Current
Output Current
1mA
1mA
Output Voltage
Output Voltage
8/11
Leshan Radio Co ., Ltd
7) Startup response
8) Shutdown response
EN
voltage
EN voltage
Output voltage
Output voltage
9/11
Leshan Radio Co ., Ltd
Package Information:
SOT-23-5:
Package specification:
SOT-89-3:
Package Dimension:
Unit: mm
Unit: mm
10/11
Leshan Radio Co ., Ltd
SOT-23-3:
Package dimension:
Unit: mm
11/11