NSC LM1086CS-2.85 1.5a low dropout positive regulator Datasheet

LM1086
1.5A Low Dropout Positive Regulators
General Description
Features
The LM1086 is a series of low dropout positive voltage
regulators with a maximum dropout of 1.5V at 1.5A of load
current. It has the same pin-out as National Semiconductor’s
industry standard LM317.
The LM1086 is available in an adjustable version, which can
set the output voltage with only two external resistors. It is
also available in six fixed voltages: 1.8V, 2.5V, 2.85V, 3.3V,
3.45V and 5.0V. The fixed versions integrate the adjust
resistors.
n Available in 1.8V, 2.5V, 2.85V, 3.3V, 3.45V, 5V and
Adjustable Versions
n Current Limiting and Thermal Protection
n Output Current
1.5A
n Line Regulation
0.015% (typical)
n Load Regulation
0.1% (typical)
The LM1086 circuit includes a zener trimmed bandgap reference, current limiting and thermal shutdown.
The LM1086 series is available in TO-220, TO-263, and LLP
packages. Refer to the LM1084 for the 5A version, and the
LM1085 for the 3A version.
Applications
n
n
n
n
n
n
SCSI-2 Active Terminator
High Efficiency Linear Regulators
Battery Charger
Post Regulation for Switching Supplies
Constant Current Regulator
Microprocessor Supply
Connection Diagrams
TO-220
TO-263
LLP
10094802
Top View
10094804
Top View
10094866
Pins 6, 7, and 8 must be tied together.
Top View
Basic Functional Diagram, Adjustable Version
Application Circuit
10094865
10094852
1.2V to 15V Adjustable Regulator
© 2005 National Semiconductor Corporation
DS100948
www.national.com
LM1086 1.5A Low Dropout Positive Regulators
June 2005
LM1086
Ordering Information
Package
3-lead TO-263
Temperature Range
−40˚C to +125˚C
0˚C to +125˚C
3-lead TO-220
−40˚C to +125˚C
0˚C to +125˚C
8-Lead LLP
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−40˚C to +125˚C
Part Number
Transport Media
LM1086IS-ADJ
Rails
LM1086ISX-ADJ
Tape and Reel
LM1086IS-1.8
Rails
LM1086ISX-1.8
Tape and Reel
LM1086IS-2.85
Rails
LM1086ISX-2.85
Tape and Reel
LM1086IS-3.3
Rails
LM1086ISX-3.3
Tape and Reel
LM1086IS-3.45
Rails
LM1086ISX-3.45
Tape and Reel
LM1086IS-5.0
Rails
LM1086ISX-5.0
Tape and Reel
LM1086CS-ADJ
Rails
LM1086CSX-ADJ
Tape and Reel
LM1086CS-2.5
Rails
LM1086CSX-2.5
Tape and Reel
LM1086CS-2.85
Rails
LM1086CSX-2.85
Tape and Reel
LM1086CS-3.3
Rails
LM1086CSX-3.3
Tape and Reel
LM1086CS-5.0
Rails
LM1086CSX-5.0
Tape and Reel
LM1086IT-ADJ
Rails
LM1086IT-1.8
Rails
LM1086IT-2.85
Rails
LM1086IT-3.3
Rails
LM1086IT-5.0
Rails
LM1086CT-ADJ
Rails
LM1086CT-2.85
Rails
LM1086CT-3.3
Rails
LM1086CT-5.0
Rails
LM1086ILD-ADJ
Rails
LM1086ILDX-ADJ
Tape and Reel
LM1086ILD-1.8
Rails
LM1086ILDX-1.8
Tape and Reel
LM1086ILD-2.5
Rails
LM1086ILDX-2.5
Tape and Reel
LM1086ILD-2.85
Rails
LM1086ILDX-2.85
Tape and Reel
LM1086ILD-3.3
Rails
LM1086ILDX-3.3
Tape and Reel
LM1086ILD-5.0
Rails
LM1086ILDX-5.0
Tape and Reel
2
NSC Drawing
TS3B
T03B
LDC008AA
LM1086
Simplified Schematic
10094834
3
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LM1086
Absolute Maximum Ratings (Note 1)
Storage Temperature Range
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Lead Temperature
-65˚C to 150˚C
260˚C, to 10 sec
ESD Tolerance (Note 4)
Maximum Input-to-Output Voltage Differential
2000V
Operating Ratings (Note 1)
LM1086-ADJ
29V
LM1086-1.8
27V
LM1086-2.5
27V
LM1086-2.85
27V
Control Section
0˚C to 125˚C
LM1086-3.3
27V
Output Section
0˚C to 150˚C
LM1086-3.45
27V
LM1086-5.0
25V
Control Section
−40˚C to 125˚C
Internally Limited
Output Section
−40˚C to 150˚C
Power Dissipation (Note 2)
Junction Temperature (TJ)(Note 3)
Junction Temperature Range (TJ) (Note 3)
"C" Grade
"I" Grade
150˚C
Electrical Characteristics
Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in Boldface type apply over the entire junction temperature range for operation.
Symbol
VREF
VOUT
∆VOUT
Parameter
Reference Voltage
Output Voltage
(Note 7)
Line Regulation
(Note 8)
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Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
LM1086-ADJ
IOUT = 10mA, VIN−VOUT = 3V
10mA ≤IOUT ≤ IFULL LOAD,
1.5V ≤ VIN−VOUT ≤ 15V (Note 7)
1.238
1.225
1.250
1.250
1.262
1.270
V
V
LM1086-1.8
IOUT = 0mA, VIN = 5V
0 ≤ IOUT ≤ IFULL LOAD, 3.3V ≤ VIN ≤ 18V
1.782
1.764
1.8
1.8
1.818
1.836
V
LM1086-2.5
IOUT = 0mA, VIN = 5V
0 ≤ IOUT ≤ IFULL LOAD, 4.0V ≤ VIN ≤ 18V
2.475
2.450
2.50
2.50
2.525
2.55
V
LM1086-2.85
IOUT = 0mA, VIN = 5V
0 ≤ IOUT ≤ IFULL LOAD, 4.35V ≤ VIN ≤ 18V
2.82
2.79
2.85
2.85
2.88
2.91
V
V
LM1086-3.3
IOUT = 0mA, VIN = 5V
0 ≤ IOUT ≤ IFULL LOAD, 4.75V ≤ VIN ≤ 18V
3.267
3.235
3.300
3.300
3.333
3.365
V
V
LM1086-3.45
IOUT = 0mA, VIN = 5V
0 ≤ IOUT ≤ IFULL LOAD, 4.95V ≤ VIN ≤ 18V
3.415
3.381
3.45
3.45
3.484
3.519
V
V
LM1086-5.0
IOUT = 0mA, VIN = 8V
0 ≤ IOUT ≤ IFULL LOAD, 6.5V ≤ VIN ≤ 20V
4.950
4.900
5.000
5.000
5.050
5.100
V
V
0.015
0.035
0.2
0.2
%
%
LM1086-1.8
IOUT = 0mA, 3.3V ≤ VIN ≤ 18V
0.3
0.6
6
6
mV
LM1086-2.5
IOUT = 0mA, 4.0V ≤ VIN ≤ 18V
0.3
0.6
6
6
mV
Conditions
LM1086-ADJ
IOUT =10mA, 1.5V≤ (VIN-VOUT) ≤ 15V
4
(Continued)
Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in Boldface type apply over the entire junction temperature range for operation.
Symbol
∆VOUT
Typ
(Note 5)
Max
(Note 6)
Units
LM1086-2.85
IOUT = 0mA, 4.35V ≤ VIN ≤ 18V
0.3
0.6
6
6
mV
mV
LM1086-3.3
IOUT = 0mA, 4.5V ≤ VIN ≤ 18V
0.5
1.0
10
10
mV
mV
LM1086-3.45
IOUT = 0mA, 4.95V ≤ VIN ≤ 18V
0.5
1.0
10
10
mV
mV
LM1086-5.0
IOUT = 0mA, 6.5V ≤ VIN ≤ 20V
0.5
1.0
10
10
mV
mV
0.1
0.2
0.3
0.4
%
%
LOAD
3
6
12
20
mV
mV
LOAD
3
7
15
25
mV
mV
LOAD
5
10
20
35
mV
mV
1.3
1.5
V
Parameter
Load Regulation
(Note 8)
LM1086-ADJ
(VIN-V OUT ) = 3V, 10mA ≤ IOUT ≤ IFULL
LM1086-1.8 ,2.5, 2.85
VIN = 5V, 0 ≤ IOUT ≤ IFULL
LM1086-3.3, 3.45
VIN = 5V, 0 ≤ IOUT ≤ IFULL
LM1086-5.0
VIN = 8V, 0 ≤ IOUT ≤ IFULL
ILIMIT
LOAD
Dropout Voltage
(Note 9)
LM1086-ADJ, 1.8, 2.5,2.85, 3.3, 3.45, 5
∆VREF, ∆VOUT = 1%, IOUT = 1.5A
Current Limit
LM1086-ADJ
VIN−VOUT = 5V
VIN−VOUT = 25V
1.50
0.05
2.7
0.15
A
A
LM1086-1.8,2.5, 2.85, 3.3, 3.45, VIN = 8V
1.5
2.7
A
LM1086-5.0, VIN = 10V
1.5
2.7
A
Minimum Load Current
(Note 10)
LM1086-ADJ
VIN −VOUT = 25V
5.0
10.0
Quiescent Current
LM1086-1.8, 2.5, 2.85, VIN ≤ 18V
5.0
10.0
mA
LM1086-3.3, VIN ≤ 18V
5.0
10.0
mA
mA
LM1086-3.45, VIN ≤ 18V
5.0
10.0
mA
LM1086-5.0, VIN ≤ 20V
5.0
10.0
mA
Thermal Regulation
TA = 25˚C, 30ms Pulse
0.008
0.04
%/W
Ripple Rejection
fRIPPLE = 120Hz, COUT = 25µF Tantalum,
IOUT = 1.5A
LM1086-ADJ, CADJ = 25µF, (VIN−VO) = 3V
60
75
dB
LM1086-1.8, 2.5, 2.85, VIN = 6V
60
72
dB
LM1086-3.3, VIN= 6.3V
60
72
dB
LM1086-3.45, VIN= 6.3V
60
72
dB
LM1086-5.0 VIN = 8V
60
68
dB
Adjust Pin Current
LM1086
55
120
µA
Adjust Pin Current
Change
10mA ≤ IOUT ≤ IFULL LOAD,
1.5V ≤ (VIN−VOUT) ≤ 15V
0.2
5
µA
1.0
%
Temperature Stability
θJC
Min
(Note 6)
Conditions
0.5
Long Term Stability
TA = 125˚C, 1000Hrs
RMS Noise
(% of VOUT)
10Hz ≤ f≤ 10kHz
Thermal Resistance
Junction-to-Case
3-Lead TO-263: Control Section/Output
Section
3-Lead TO-220: Control Section/Output
Section
0.3
%
0.003
5
%
1.5/4.0
1.5/4.0
˚C/W
˚C/W
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LM1086
Electrical Characteristics
LM1086
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Power dissipation is kept in a safe range by current limiting circuitry. Refer to Overload Recovery in Application Notes. The value θJA for the LLP package
is specifically dependent on PCB trace area, trace material, and the number of thermal vias. For improved thermal resistance and power dissipation for the LLP
package, refer to Application Note AN-1187.
Note 3: The maximum power dissipation is a function of TJ(MAX) , θJA, and TA. The maximum allowable power dissipation at any ambient temperature
is PD = (TJ(MAX)–T A)/θJA. All numbers apply for packages soldered directly into a PC board. Refer to Thermal Considerations in the Application Notes.
Note 4: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF.
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: IFULL LOAD is defined in the current limit curves. The IFULL LOAD Curve defines current limit as a function of input-to-output voltage. Note that 15W power
dissipation for the LM1086 is only achievable over a limited range of input-to-output voltage.
Note 8: Load and line regulation are measured at constant junction temperature, and are guaranteed up to the maximum power dissipation of 15W. Power
dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output
range.
Note 9: Dropout voltage is specified over the full output current range of the device.
Note 10: The minimum output current required to maintain regulation.
Typical Performance Characteristics
Dropout Voltage vs. Output Current
Short-Circuit Current vs. Input/Output Difference
10094837
10094863
Load Regulation vs. Temperature
Percent Change in Output Voltage vs. Temperature
10094838
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10094899
6
(Continued)
Adjust Pin Current vs. Temperature
Maximum Power Dissipation vs. Temperature
10094842
10094898
Ripple Rejection vs. Frequency (LM1086-Adj.)
Ripple Rejection vs. Output Current (LM1086-Adj.)
10094844
10094843
Ripple Rejection vs. Frequency (LM1086-5)
Ripple Rejection vs. Output Current (LM1086-5)
10094846
10094845
7
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LM1086
Typical Performance Characteristics
LM1086
Typical Performance Characteristics
(Continued)
Line Transient Response
Load Transient Response
10094847
10094848
For fixed voltage devices, R1 and R2 are integrated inside
the devices.
Application Note
GENERAL
Figure 1 shows a basic functional diagram for the LM1086Adj (excluding protection circuitry) . The topology is basically
that of the LM317 except for the pass transistor. Instead of a
Darlingtion NPN with its two diode voltage drop, the LM1086
uses a single NPN. This results in a lower dropout voltage.
The structure of the pass transistor is also known as a quasi
LDO. The advantage a quasi LDO over a PNP LDO is its
inherently lower quiescent current. The LM1086 is guaranteed to provide a minimum dropout voltage 1.5V over temperature, at full load.
10094817
FIGURE 2. Basic Adjustable Regulator
STABILITY CONSIDERATION
Stability consideration primarily concern the phase response
of the feedback loop. In order for stable operation, the loop
must maintain negative feedback. The LM1086 requires a
certain amount series resistance with capacitive loads. This
series resistance introduces a zero within the loop to increase phase margin and thus increase stability. The equivalent series resistance (ESR) of solid tantalum or aluminum
electrolytic capacitors is used to provide the appropriate zero
(approximately 500 kHz).
The Aluminum electrolytic are less expensive than tantalums, but their ESR varies exponentially at cold temperatures; therefore requiring close examination when choosing
the desired transient response over temperature. Tantalums
are a convenient choice because their ESR varies less than
2:1 over temperature.
The recommended load/decoupling capacitance is a 10uF
tantalum or a 50uF aluminum. These values will assure
stability for the majority of applications.
The adjustable versions allows an additional capacitor to be
used at the ADJ pin to increase ripple rejection. If this is done
the output capacitor should be increased to 22uF for tantalums or to 150uF for aluminum.
10094865
FIGURE 1. Basic Functional Diagram for the LM1086,
excluding Protection circuitry
OUTPUT VOLTAGE
The LM1086 adjustable version develops at 1.25V reference
voltage, (VREF), between the output and the adjust terminal.
As shown in figure 2, this voltage is applied across resistor
R1 to generate a constant current I1. This constant current
then flows through R2. The resulting voltage drop across R2
adds to the reference voltage to sets the desired output
voltage.
The current IADJ from the adjustment terminal introduces an
output error . But since it is small (120uA max), it becomes
negligible when R1 is in the 100Ω range.
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When the adjustable regulator is used (Figure 4), the best
performance is obtained with the positive side of the resistor
R1 tied directly to the output terminal of the regulator rather
than near the load. This eliminates line drops from appearing
effectively in series with the reference and degrading regulation. For example, a 5V regulator with 0.05Ω resistance
between the regulator and load will have a load regulation
due to line resistance of 0.05Ω x IL. If R1 (=125Ω) is connected near the load the effective line resistance will be
0.05Ω (1 + R2/R1) or in this case, it is 4 times worse. In
addition, the ground side of the resistor R2 can be returned
near the ground of the load to provide remote ground sensing and improve load regulation.
(Continued)
Capacitors other than tantalum or aluminum can be used at
the adjust pin and the input pin. A 10uF capacitor is a
reasonable value at the input. See Ripple Rejection section
regarding the value for the adjust pin capacitor.
It is desirable to have large output capacitance for applications that entail large changes in load current (microprocessors for example). The higher the capacitance, the larger the
available charge per demand. It is also desirable to provide
low ESR to reduce the change in output voltage:
∆V = ∆I x ESR
It is common practice to use several tantalum and ceramic
capacitors in parallel to reduce this change in the output
voltage by reducing the overall ESR.
Output capacitance can be increased indefinitely to improve
transient response and stability.
RIPPLE REJECTION
Ripple rejection is a function of the open loop gain within the
feed-back loop (refer to Figure 1 and Figure 2). The LM1086
exhibits 75dB of ripple rejection (typ.). When adjusted for
voltages higher than VREF, the ripple rejection decreases as
function of adjustment gain: (1+R1/R2) or VO/VREF. Therefore a 5V adjustment decreases ripple rejection by a factor of
four (−12dB); Output ripple increases as adjustment voltage
increases.
However, the adjustable version allows this degradation of
ripple rejection to be compensated. The adjust terminal can
be bypassed to ground with a capacitor (CADJ). The impedance of the CADJ should be equal to or less than R1 at the
desired ripple frequency. This bypass capacitor prevents
ripple from being amplified as the output voltage is increased.
1/(2π*fRIPPLE*CADJ) ≤ R1
10094819
FIGURE 4. Best Load Regulation using Adjustable
Output Regulator
PROTECTION DIODES
Under normal operation, the LM1086 regulator does not
need any protection diode. With the adjustable device, the
internal resistance between the adjustment and output terminals limits the current. No diode is needed to divert the
current around the regulator even with a capacitor on the
adjustment terminal. The adjust pin can take a transient
signal of ± 25V with respect to the output voltage without
damaging the device.
When an output capacitor is connected to a regulator and
the input is shorted, the output capacitor will discharge into
the output of the regulator. The discharge current depends
on the value of the capacitor, the output voltage of the
regulator, and rate of decrease of VIN. In the LM1086 regulator, the internal diode between the output and input pins
can withstand microsecond surge currents of 10A to 20A.
With an extremely large output capacitor (≥1000 µf), and
with input instantaneously shorted to ground, the regulator
could be damaged. In this case, an external diode is recommended between the output and input pins to protect the
regulator, shown in Figure 5.
LOAD REGULATION
The LM1086 regulates the voltage that appears between its
output and ground pins, or between its output and adjust
pins. In some cases, line resistances can introduce errors to
the voltage across the load. To obtain the best load regulation, a few precautions are needed.
Figure 3 shows a typical application using a fixed output
regulator. Rt1 and Rt2 are the line resistances. VLOAD is less
than the VOUT by the sum of the voltage drops along the line
resistances. In this case, the load regulation seen at the
RLOAD would be degraded from the data sheet specification.
To improve this, the load should be tied directly to the output
terminal on the positive side and directly tied to the ground
terminal on the negative side.
10094818
FIGURE 3. Typical Application using Fixed Output
Regulator
9
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LM1086
Application Note
LM1086
Application Note
(Continued)
10094816
FIGURE 6. Power Dissipation Diagram
Once the device power is determined, the maximum allowable (θJA(max)) is calculated as:
θJA (max) = TR(max)/PD = TJ(max) − TA(max))/PD
The LM1086 has different temperature specifications for two
different sections of the IC: the control section and the output
section. The Electrical Characteristics table shows the junction to case thermal resistances for each of these sections,
while the maximum junction temperatures (TJ(max)) for each
section is listed in the Absolute Maximum section of the
datasheet. TJ(max) is 125˚C for the control section, while
TJ(max) is 150˚C for the output section.
θJA (max) should be calculated separately for each section as
follows:
θJA (max, CONTROL SECTION) = (125˚C for TA(max))/PD
θJA (max, OUTPUT SECTION) = (150˚C for TA(max))/PD
The required heat sink is determined by calculating its required thermal resistance (θHA(max)).
θHA(max) = θJA(max) − (θJC + θCH)
θHA (max) should be calculated twice as follows:
θHA (max) = θJA(max, CONTROL SECTION) - (θJC (CONTROL SECTION) + θCH)
θHA (max)= θJA(max, OUTPUT SECTION) - (θJC(OUTPUT
SECTION) + θCH)
If thermal compound is used, θCH can be estimated at 0.2
C/W. If the case is soldered to the heat sink, then a θCH can
be estimated as 0 C/W.
After, θHA (max) is calculated for each section, choose the
lower of the two θHA (max) values to determine the appropriate heat sink.
If PC board copper is going to be used as a heat sink, then
Figure 7 can be used to determine the appropriate area
(size) of copper foil required.
10094815
FIGURE 5. Regulator with Protection Diode
OVERLOAD RECOVERY
Overload recovery refers to regulator’s ability to recover from
a short circuited output. A key factor in the recovery process
is the current limiting used to protect the output from drawing
too much power. The current limiting circuit reduces the
output current as the input to output differential increases.
Refer to short circuit curve in the curve section.
During normal start-up, the input to output differential is
small since the output follows the input. But, if the output is
shorted, then the recovery involves a large input to output
differential. Sometimes during this condition the current limiting circuit is slow in recovering. If the limited current is too
low to develop a voltage at the output, the voltage will
stabilize at a lower level. Under these conditions it may be
necessary to recycle the power of the regulator in order to
get the smaller differential voltage and thus adequate start
up conditions. Refer to curve section for the short circuit
current vs. input differential voltage.
THERMAL CONSIDERATIONS
ICs heats up when in operation, and power consumption is
one factor in how hot it gets. The other factor is how well the
heat is dissipated. Heat dissipation is predictable by knowing
the thermal resistance between the IC and ambient (θJA).
Thermal resistance has units of temperature per power (C/
W). The higher the thermal resistance, the hotter the IC.
The LM1086 specifies the thermal resistance for each package as junction to case (θJC). In order to get the total
resistance to ambient (θJA), two other thermal resistance
must be added, one for case to heat-sink (θCH) and one for
heatsink to ambient (θHA). The junction temperature can be
predicted as follows:
TJ = TA + PD (θJC + θCH + θHA) = TA + PD θJA
TJ is junction temperature, TA is ambient temperature, and
PD is the power consumption of the device. Device power
consumption is calculated as follows:
IIN = IL + IG
PD = (VIN−VOUT) IL + VINIG
Figure 6 shows the voltages and currents which are present
in the circuit.
10094864
FIGURE 7. Heat sink thermal Resistance vs. Area
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LM1086
Typical Applications
10094854
10094849
Battery Charger
5V to 3.3V, 1.5A Regulator
10094855
10094850
Adjustable @ 5V
Adjustable Fixed Regulator
10094856
Regulator with Reference
10094852
1.2V to 15V Adjustable Regulator
10094857
High Current Lamp Driver Protection
10094853
5V Regulator with Shutdown
11
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LM1086
Typical Applications
(Continued)
10094860
Ripple Rejection Enhancement
10094859
Battery Backup Regulated Supply
10094861
Automatic Light control
10094858
Remote Sensing
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LM1086
Typical Applications
(Continued)
10094851
SCSI-2 Active termination
13
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LM1086
Physical Dimensions
inches (millimeters) unless otherwise noted
3-Lead TO-263
NS Package Number TS3B
3-Lead TO-220
NS Package Number T03B
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14
LM1086 1.5A Low Dropout Positive Regulators
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
8-Lead LLP
NS Package Number LDC008AA
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the right at any time without notice to change said circuitry and specifications.
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no ‘‘Banned Substances’’ as defined in CSP-9-111S2.
Leadfree products are RoHS compliant.
National Semiconductor
Americas Customer
Support Center
Email: [email protected]
Tel: 1-800-272-9959
www.national.com
National Semiconductor
Europe Customer Support Center
Fax: +49 (0) 180-530 85 86
Email: [email protected]
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
National Semiconductor
Asia Pacific Customer
Support Center
Email: [email protected]
National Semiconductor
Japan Customer Support Center
Fax: 81-3-5639-7507
Email: [email protected]
Tel: 81-3-5639-7560
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