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SPX2815AT-L-3-3

P1-P3P4-P6P7-P9P10-P10
1
Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator © 2006 Sipex Corporation
1.5A Low Dropout Voltage Regulator
SPX2815
DESCRIPTION
FEATURES
■ Guaranteed 1.5A Output Current
■ Three Terminal Adjustable or Fixed
2.5V, 3.3V and 5.0V
■ Low Quiescent Current
■ Low Dropout Voltage of 1.1V @ 1.5A
■ 0.1% Line and 0.1% Load Regulation
■ Stable with 10uF Ceramic Capacitor
■ Overcurrent and Thermal Protection
■ Available Packages: TO-252,
TO-220, and TO-263
■ Similar to Industry Standard LT1086/
LT1586
The SPX2815 is a low power positive-voltage regulator designed to satisfy moderate power
requirements with a cost effective, small footprint solution. This device is an excellent choice for
use in battery-powered applications and portable computers. The SPX2815 features very low
quiescent current and a low dropout voltage of 1.1V at a full load. As output current decreases,
quiescent current flows into the load, increasing efficiency. SPX2815 is available in adjustable
or fixed 2.5V, 3.3V and 5.0V output voltages.
The SPX2815 is offered in several 3-pin surface mount packages: TO-252, TO-220 and TO-263.
An output capacitor of 10μF ceramic or tantalum provides unconditional stability.
APPLICATIONS
■ Desktop PCs, Servers
■ Powering VGA and Sound Cards
■ Cordless Phones
■ Battery Chargers
■ Adjustable Power Supplies
■ Portable Instrumentation
■ SMPS Post-Regulator
■ Constant Current Regulators
■ Disk Drives
FUNCTIONAL DIAGRAM (Adjustable)
+
-
Current Limit
I
CL
I
TL
Thermal Limit
V
REF
AMP
V
OUT
V
IN
ADJ/GND
+
–
I
ADJ
~
50μ
A
–
1.25V
_
+
Refer to Page 5 for Pinouts
Now Available in Lead Free Packaging
2
Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator © 2006 Sipex Corporation
Power Dissipation.......................................Internally Limited
Lead Temperature (soldering, 5 seconds) ...............260°C
Storage Temperature Range.......................-65°C to +150°C
Operating Junction Temperature Range.....-40°C to +125°C
Input Supply Voltage .................................................... +10V
Input to Output Voltage ................................................ +8.8V
ESD Rating .............................................................. 2kV min
PARAMETER MIN TYP MAX MIN TYP MAX UNITS CONDITIONS
2.5V Version SPX2815A SPX2815
Output Voltage 2.475 2.500 2.525 2.450 2.500 2.550 V I
OUT
= 10mA, V
IN
=4.5V
2.450 2.550 2.425 2.575 10mA ≤ I
OUT
≤ 1.5A, 4.25V ≤ V
IN
≤ 10V
3.30V Version
Output Voltage 3.267 3.300 3.333 3.234 3.300 3.366 V I
OUT
= 10mA, V
IN
=5V
3.234 3.366 3.201 3.399 10mA ≤ I
OUT
≤ 1.5A, 4.75V ≤ V
IN
≤ 10V
5.0V Version
Output Voltage 4.950 5.000 5.050 4.900 5.000 5.100 V I
OUT
=10mA, V
IN
=7V
4.900 5.100 4.850 5.150 10mA ≤ I
OUT
≤ 1.5A, 6.50V ≤ V
IN
≤ 10V
All Voltage Options
Reference Voltage 1.238 1.250 1.262 1.225 1.250 1.275 V I
OUT
=10mA, (V
IN
- V
OUT
)= 2V
1.225 1.275 1.212 1.287 10mA≤I
OUT
≤ 1.5A, 1.5V≤(V
IN
-V
OUT
)≤ 10V
Output Voltage 0.3 0.5 %
Temperature Stability
Line Regulation 0.1 0.2 0.1 0.2 % 4.25V≤V
IN
≤ 10V,V
OUT
=2.5V,I
OUT
=10mA
0.1 0.2 0.1 0.2 4.75V≤V
IN
≤ 10V,V
OUT
=3.3V,I
OUT
=10mA
0.1 0.2 0.1 0.2 6.50V≤V
IN
≤ 10V,V
OUT
=5.0V,I
OUT
=10mA
Load Regulation 0.1 0.3 0.1 0.3 % 10mA≤I
OUT
≤ 1.5A, V
OUT
=2.5V
0.1 0.3 0.1 0.3 10mA≤I
OUT
≤ 1.5A, V
OUT
=3.3V
0.1 0.3 0.1 0.3 10mA≤I
OUT
≤ 1.5A, V
OUT
=5.0V
Dropout Voltage 1.00 1.00 V I
OUT
=0.5A
(Note 2) 1.10 1.2 1.10 1.2 I
OUT
=1.5A
Quiescent Current 4 10 4 10 mA Fixed voltage versions
Adjust Pin Current 50 120 50 120 μA
Current Limit 2.5 2.5 A (V
IN
-V
OUT
)=5V
Thermal Regulation 0.01 0.1 0.01 0.1 %/W 25°C, 30mS pulse
Ripple Rejection 60 75 60 75 dB f
RIPPLE
=120Hz, (V
IN
-V
OUT
)=2V,
V
RIPPLE
=1V
PP
Long Term Stability 0.03 0.03 % 125°C, 1000Hrs
RMS Output Noise 0.003 0.003 % % of V
OUT
, 10Hz≤f≤10kHz
Thermal Resistance 3 3 °C/W TO-220 Junction to Case, at Tab
29.3 29.3 TO-220 Junction to Ambient
3 3 TO-263 Junction to Case, at Tab
31.4 31.4 TO-263 Junction to Ambient
6 6 TO-252 Junction to Case, at Tab
50 50 TO-252 Junction to Ambient
ELECTRICAL CHARACTERISTICS
at V
IN
=V
OUT
+ 1.5V, T
A
= 25°C, C
IN
= C
OUT
= 10μF, I
OUT
=10mA, unless otherwise specified. The Boldface applies over the
full operating temperature range.
ABSOLUTE MAXIMUM RATINGS
3
Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator © 2006 Sipex Corporation
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 1. Line Regulation for SPX2815U-3.3; I
OUT
=10mA
3.300
3.305
3.310
3.315
3.320
3.325
4.5 6.5 8.5 10.5 12.5 14.5
Vin (V)
Vout (V)
1.225
1.23
1.235
1.24
1.245
1.25
1.255
1.26
1.265
1.27
1.275
-50 -30 -10 10 30 50 70 90 110 130
Temp (C)
Vout (V)
1.25v Adj
Figure 2. V
OUT
vs Temperature, V
IN
=2.5V, I
OUT
=10mA
Figure 3. V
IN
=4.0V, I
OUT
=10mA
2.45
2.46
2.47
2.48
2.49
2.5
2.51
2.52
2.53
2.54
2.55
-50 -30 -10 10 30 50 70 90 110 130
Temp (C)
Vout (V)
2.5v Adj
2.5v Fixed
Figure 4. V
IN
=5.0V, I
OUT
=10mA
3.26
3.28
3.3
3.32
3.34
3.36
3.38
-50 -30 -10 10 30 50 70 90 110 130
Temp (C)
Vout (V)
3.3v Adj
3.3v Fixed
Output Capacitor
To ensure the stability of the SPX2815, an
output capacitor of at least 10μF (ceramic or
tantalum) or 22μF (aluminum) is required. The
value may change based on the application
requirements of the output load or temperature
range. The value of Equivalent Series Resis-
tance (ESR) can vary based on the type of
capacitor used in the applications to guarantee
stability. The recommended value for ESR is
0.5Ω or less. A larger value of output capaci-
tance (up to 100μF) can improve the load tran-
sient response.
Soldering Methods
The SPX2815 die is attached to the heatsink lead
which exits opposite the input, output, and ground
pins.
Thermal Characteristics
The SPX2815 features internal thermal limiting
to protect the device during overload condi-
tions. Special care needs to be taken during
continuous load conditions such that the maxi-
mum junction temperature does not exceed
125°C. Thermal protection is activated at >179°C
and deactiviated at <165°C.
The thermal interaction from other components
in the application can affect the thermal resis-
tance of the SPX2815. The actual thermal
resistance can be determined with experimenta-
tion.
SPX2815 power dissipation is calculated as
follows:
P
D
= (V
IN
- V
OUT
)(I
OUT
)
Maximum Junction Temperature range:
T
J
= T
A
(max) + P
D
* θ
JA
(thermal resistance,
junction-to-ambient)
Maximum junction temperature must not ex-
ceed 125°C.
APPLICATION INFORMATION
P1-P3P4-P6P7-P9P10-P10

SPX2815AT-L-3-3

Mfr. #:
Buy SPX2815AT-L-3-3
Manufacturer:
MaxLinear
Description:
LDO Voltage Regulators 1.5A LOW DROPOUT
Lifecycle:
New from this manufacturer.
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