SPX1202T-L-5.0 [EXAR]
Fixed Positive LDO Regulator, 5V, 1.15V Dropout, PSSO2, TO-263, 3 PIN;
| 型号： | SPX1202T-L-5.0 |
| 厂家： | 
EXAR CORPORATION |
| 描述： | Fixed Positive LDO Regulator, 5V, 1.15V Dropout, PSSO2, TO-263, 3 PIN 输出元件 调节器 |
| 文件： | 总5页 (文件大小：143K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SPX1202
600mA Low Dropout NPN Voltage Regulator
FEATURES
APPLICATIONS
• Guaranteed 600mA Output
• Portable/ Palm Top / Notebook Computers
• Three Terminal Adjustable Or Fixed 1.5V, 2.5V, 3V, 3.3V & 5V
• Very Low Quiescent Current
• Battery Chargers
• Disk Drives
• Portable Consumer Equipment
• Portable Instrumentation
• SMPS Post-Regulator
• Low Dropout Voltage Of 1.2 Volts At Full Load
• Extremely Tight Load And Line Regulation
• Very Low Temperature Coefficient
• Logic-Controlled Electronic Shutdown
• Internal Overcurrent Limiting & Thermal Overload Protection
• Surface Mount Package SOT-223, TO-263, TO-252 , TO-220 & SO-8
PRODUCT DESCRIPTION
The SPX1202 is a low power positive-voltage regulator designed to meet 600mA output current. This device is an excellent choice for
use in battery-powered applications, as active terminators for the SCSI bus, and portable computers. The SPX1202 features very low
quiescent current and very low dropout voltage of 1.2V at a full load and lower as output current decreases. This product is available
as an adjustable or fixed 3V, 3.3V, and 5V output voltages.
The SPX1202 is offered in a 3-pin surface mount package SOT-223, TO-252, TO-220 & TO-263. The output capacitor of 10µF or
larger is needed for output stability of SPX1202 as required by most of the other regulator circuits.
PIN CONNECTIONS
8-Pin Surface Mount
TO-263-3 Package
TO-220 Package
TO-252 Package
SOT-223 Package
SPX1202
GND
1
2
8
VIN
VIN
V
3
2
1
3
2
1
IN
VIN
V IN
VOUT
ADJ/GND
SPX1202 7
N/C
V
VOUT
OUT
1
2
3
3
6
VIN
N/C
VOUT
VOUT
ADJ/GND
ADJ/GND
4
5
VOUT
ADJ/GND
VIN
Front View
Front View
Front View
Top View
Front View
Rev. 10/19/00
SPX1202
ABSOLUTE MAXIMUM RATINGS
Power Dissipation..........................................Internally Limited
Lead Temp. (Soldering, 5 Seconds) ................................ 260°C
Storage Temperature Range ............................-65° to +150°C
Operating Junction Temperature Range
Input Supply Voltage ......................................-20V to +20V
ESD Rating ............................................................2KV Min
SPX1202................................................ -40C° to +125°C
ELECTRICAL CHARACTERISTICS at VIN = VOUT +1, Ta=25°C, CL =3.3µf, unless otherwise specified. Limits in
Boldface apply over the full operating temperature range.
SPX1202
Typ
Min
Max
Parameter
Conditions
Units
1.5V Version
Output Voltage
IOUT=10mA, VIN=5.00V
0≤IOUT≤600mA, 4.50≤VIN≤10V
1.500
1.485
1.515
V
1.470
1.530
2.5V Version
Output Voltage
V
V
V
V
IOUT=10mA, VIN=5.00V
0≤IOUT≤600mA, 4.50≤VIN≤10V
2.500
3.000
3.300
5.000
2.475
2.450
2.525
2.550
3.0V Version
Output Voltage
IOUT=10mA, VIN=5.00V
0≤IOUT≤600mA, 4.50≤VIN≤10V
2.970
2.940
3.030
3.060
3.3 V Version
Output Voltage
IOUT=10mA, VIN=5.00V
0≤IOUT≤600mA, 4.50≤VIN≤10V
3.267
3.234
3.333
3.366
5.0V Version
Output Voltage
IOUT=10mA, VIN=5.00V
0≤IOUT≤600mA, 4.50≤VIN≤10
4.950
4.900
5.050
5.100
All Output Voltage
Reference Voltage
IOUT=10mA, (VIN- VIN) =2V
10≤IOUT≤600mA, 1.4≤(VIN -VIN) ≤10V
V
%
1.250
1.238
1.225
1.262
1.270
0.05
Output Voltage
Temperature Stability
Line Regulation
(Note 1)
mV
1.00
1.00
1.00
1.00
1.00
1.00
7.00
7.00
4.50V ≤VIN≤12V, VOUT=3.00, IOUT=0
4.80V ≤VIN≤12V, VOUT=3.30, IOUT=0
6.50V ≤VIN≤15V, VOUT=5.00, IOUT=0
0≤IOUT≤600mA, VIN=4.50V, VOUT=3.00
0≤IOUT≤600mA, VIN=4.80V, VOUT=3.30
0≤IOUT≤600mA, VIN=6.50V, VOUT=5.00
IL = 100mA
10.00
mV
Load Regulation
12.00
12.00
15.00
V
Dropout Voltage
( Note 2)
1.00
1.10
IL = 600mA
1.05
1.15
Quiescent Current
5.00
10.00
mA
4.25V ≤VIN≤6.5V
850
0.01
60
1000
0.1
75
mA
%/W
dB
Current Limit
Thermal Regulation
Ripple Rejection
(VIN-VOUT)=5V
25°°C,30mS Pulse
fRIPPLE=120Hz, (VIN-VOUT) = 3V,
V
RIPPLE=1Vp-p
0.03
0.003
15
Long Term Stability
RMS Output Noise
Thermal Resistance
125°C, 1000Hrs
%
%
°C/W°
% of VOUT, 10Hz≤f≤10kHz
Junction to case, at tab
Note 1: Output temperature coefficient is defined as the worst case voltage change divided by the total temperature range
Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential at
very low values of programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account.
Note 3: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied. excluding loads or line
regulation effect
Rev. 10/19/00
SPX1202
Maximum Junction Temperature range:
APPLICATION NOTES EXTERNAL
CAPACITOR
TJ = Tambient (max) + PD* thermal resistance(Junction-to-
ambient)
To ensure the stability of the SPX1202 an output capacitor of
at least 10µF (tantalum)or 50µF (aluminum) is required. The
value may change based on the application requirements on
the output load or temperature range. The capacitor
equivalent series resistance (ESR) will effect the SPX1202
stability. The value of ESR can vary from the type of
capacitor used in the applications. The recommended value
for ESR is 0.5Ω. The output capacitance could increase in
size to above the minimum value. The larger value of output
capacitance as high as 100µF can improve the load transient
response.
Maximum Junction temperature must not exceed the 125°C.
10V
2.85V
SPX1202
+
+
SOLDERING METHODS
..
27K
Ω
10uF
10uF
The SPX1202 SOT-223 package is designed to be
compatible with infrared reflow or vapor-phase reflow
soldering techniques. During soldering the non-active or
mildly active fluxes may be used. The SPX1202 die is
attached to the heatsink lead which exits opposite the input,
output, and ground pins.
Hand soldering and wave soldering should be avoided since
these methods can cause damage to the device with excessive
PO = (10V - 2.85)(105mA) = (7.15)(105mA) = 703mW
thermal gradients on the package.
The SOT-223
Fig. 1. Circuit Layout, Thermal Experiments.
recommended soldering method are as follows: vapor phase
reflow and infrared reflow with the component preheated to
within 65°C of the soldering temperature range.
THERMAL CHARACTERISTICS
50 X 50 mm
The thermal resistance of SPX1202 is 15°C/W from junction
to tab and 31 °C/W from tab to ambient for a total of 46
°C/W from junction to ambient. The SPX1202 features the
internal thermal limiting to protect the device during
overload conditions. Special care needs to be taken during
continuos load conditions the maximum junction temperature
does not exceed 125 °C.
35 X 17 mm
16 X 10 mm
Taking the FR-4 printed circuit board and 1/16 thick with 1
ounce copper foil as an experiment (fig.1 & fig.2), the PCB
material is effective at transmitting heat with the tab attached
to the pad area and a ground plane layer on the backside of
the substrate. Refer to table 1 for the results of the
experiment.
The thermal interaction from other components in the
application can effect the thermal resistance of the SPX1202.
The actual thermal resistance can be determined with
experimentation. SPX1202 power dissipation is calculated as
follows:
Fig. 2. Substrate Layout for SOT-223
PD = (VIN - VOUT)(IOUT
)
Rev. 10/19/00
SPX1202
Table 1.
TOTAL PC BOARD AREA
TOPDIDE COPPER AREA
BACKSIDE COPPER AREA
THERMAL RESISTANCE
JUNCTION TO AMBIENT
2500mm
2500mm
2500mm
2500mm
2500mm
1600mm
2500mm
2500mm
1600mm
900mm
2500mm
1250mm
950mm
2500mm
1800mm
600mm
1250mm
915mm
600mm
240mm
240mm
2500mm
46°C/W°
47°C/W°
49°C/W°
51°C/W°
53°C/W°
55°C/W°
58°C/W°
59°C/W°
67°C/W°
72°C/W°
85°C/W°
2500mm
2500mm
0
0
1600mm
0
0
0
900mm
0
900mm
VIN
V
IN
V
OUT
OUT
IN
SPX1202
SPX1202
OUT
IN
C1
C
2
C
1
ADJ
ADJ
R
1
R1
R
2
LOAD
VOUT = VREF (1 + R2) + IADJ R2
R1
Typical Adjustable Regulator
600mA Current Output
Rev. 10/19/00
SPX1202
ORDERING INFORMATION
Ordering No.
SPX1202U
Precision
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
Output Voltages Packages
Adj
3 Lead TO-220
3 Lead TO-220
3 Lead TO-220
3 Lead TO-220
3 Lead TO-220
3 Lead TO-220
3 Lead TO-263
3 Lead TO-263
3 Lead TO-263
3 Lead TO-263
3 Lead TO-263
3 Lead TO-263
3 Lead TO-223
3 Lead TO-223
3 Lead TO-223
3 Lead TO-223
3 Lead TO-223
3 Lead TO-223
3 Lead TO-220
8 Lead SOIC
1.5V
2.5V
3.0V
3.3V
5.0V
Adj
SPX1202U-1.5
SPX1202U-2.5
SPX1202U-3.0
SPX1202U-3.3
SPX1202U-5.0
SPX1202T
1.5V
2.5V
3.0V
3.3V
5.0V
Adj
SPX1202T-1.5
SPX1202T-2.5
SPX1202T-3.0
SPX1202T-3.3
SPX1202T-5.0
SPX1202M3
1.5V
2.5V
3.0V
3.3V
5.0V
Adj
SPX1202M3-1.5
SPX1202M3-2.5
SPX1202M3-3.0
SPX1202M3-3.3
SPX1202M3-5.0
SPX1202S
1.5V
2.5V
3.0V
3.3V
5.0V
Adj
SPX1202S-1.5
SPX1202S-2.5
SPX1202S-3.0
SPX1202S-3.3
SPX1202S-5.0
SPX1202R
8 Lead SOIC
8 Lead SOIC
8 Lead SOIC
8 Lead SOIC
3 Lead T0-252
3 Lead TO-252
3 Lead TO-252
3 Lead TO-252
3 Lead TO-252
3 Lead TO-252
1.5V
2.5V
3.0V
3.3V
5.0V
SPX1202R-1.5
SPX1202R-2.5
SPX1202R-3.0
SPX1202R-3.3
SPX1202R-5.0
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and Main Offices:
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 935-7600
FAX: (408) 934-7500
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described
hereing; neither does it convey any license under its patent rights nor the rights of others.
Rev. 10/19/00
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