SPX1202T-L/TR [SIPEX]
600mA Low Dropout Voltage Regulator; 600毫安低压差稳压器
| 型号： | SPX1202T-L/TR |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | 600mA Low Dropout Voltage Regulator |
| 文件： | 总12页 (文件大小：1052K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Solved by
SPX1202
TM
600mA Low Dropout Voltage Regulator
FEATURES
APPLICATIONS
■ Guaranteed 600mA Output
■ SCSI-II Active Terminator
■ Three Terminal Adjustable or Fixed
■ Portable/ Palm Top / Notebook
2.5V, 3V and 3.3V
Computers
■ Low Quiescent Current
■ Battery Chargers
■ Disk Drives
Available in Lead Free Packaging
■ Portable Consumer Equipment
■ Portable Instrumentation
■ SMPS Post-Regulator
■ Low Dropout Voltage of 1.1V at Full Load
■ 0.2% Line and 0.3% Load Regulation
■ Voltage Temperature Stability 0.05%
■ Overcurrent and Thermal Protection
■ Available Packages: SOT-223,TO-252,
TO-220, and TO-263
Now Available in Lead Free Packaging
Refer to page 6 for pinouts.
DESCRIPTION
The SPX1202 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 SPX1202 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. SPX1202 is available in adjustable
or fixed 2.5V, 3V and 3.3V output voltages.
The SPX1202 is offered in several 3-pin surface mount packages: SOT-223, TO-252, TO-220
and TO-263. An output capacitor of 10F provides unconditional stability while a smaller 2.2F
capacitor is sufficient for most applications.
BLOCK DIAGRAM
VIN
+
Current Limit
-
VOUT
ICL
AMP
VREF
Thermal Limit
ADJ/GND
~
IADJ 50A
–
I TL
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢀ
ABSOLUTE MAXIMUM RATINGS
Power Dissipation ...................................... Internally Limited
Lead Temperature (soldering, 5 seconds) .................. 260C
Storage Temperature Range ...................... -65C to +150C
Operating Junction Temperature Range..... -40C to +125C
Input Supply Voltage ..................................................... +20V
ESD Rating .............................................................. 2kV min
ELECTRICAL CHARACTERISTICS
at VIN=VOUT + 1.5V, TA = 25C, CIN = COUT = 10F, unless otherwise specified. Limits in Boldface applies over the
full operating temperature range.
PARAMETER
2.5V Version
Output Voltage
CONDITIONS
TYP
MIN
MAX
UNITS
IOUT= 10mA, V IN= 5.00V
2.475
2.500
2.525
V
0 ≤I OUT ≤600mA, 4.50V ≤V IN ≤10V
2.450
2.550
3.0V Version
Output Voltage
IOUT= 10mA, V IN= 5.00V
0 ≤I OUT ≤600mA, 4.50V ≤V IN ≤10V
2.970
2.940
3.000
3.300
1.250
3.030
3.060
V
V
3.3V Version
Output Voltage
IOUT= 10mA, V IN= 5.00V
0 ≤I OUT ≤600mA, 4.50V ≤V IN ≤10V
3.267
3.234
3.333
3.366
All Output Options
Reference Voltage
IOUT=10mA, (VIN - VOUT ) = 2V
10≤IOUT≤600mA, 1.4V ≤(VIN-VOUT)≤10V
1.238
1.225
1.262
1.270
V
%
Output Voltage
(Note 1)
0.05
Temperature Stability
Line Regulation
4.50V≤VIN≤12V,V OUT=3.00,IOUT=0
4.80V≤VIN≤12V,V OUT=3.30,IOUT=0
6.50V≤VIN≤12V,V OUT=5.00,IOUT=0
1.00
1.00
1.00
7.00
7.00
10.00
mV
Load Regulation
0≤IOUT≤600mA,V IN=4.50V,VOUT=3.00
0≤IOUT≤600mA,V IN=4.80V,VOUT=3.30
0≤IOUT≤600mA,V IN=6.50V,VOUT=5.0
1.00
1.00
1.00
12.00
12.00
15.00
mV
V
Dropout Voltage
(Note 2)
IL =100mA
IL =600mA
1.00
1.05
1.10
1.15
Quiescent Current
Adjust Pin Current
Current Limit
4.25V≤VIN≤6.5V
5.00
50
10.00
mA
A
A
(VIN-VOUT)=5V
.850
0.01
60
1.0
0.1
75
Thermal Regulation
Ripple Rejection
25C, 30mS Pulse
%/W
dB
fRIPPLE=120Hz, (VIN-VOUT)=3V,
VRIPPLE=1VPP
Long Term Stability
RMS Output Noise
125C, 1000Hrs
0.03
0.003
15
%
%
% of VOUT, 10Hz≤f≤10kHz
Junction to Case, at tab
Thermal Resistance
C/W
NOTES:
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 load or line regulation effect.
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
2
TYPICAL PERFORMANCE CHARACTERISTICS
Line Regulation at 25C
3.3
2
0
Series 1
3.330
Series 2
3.3
1
5
3.3
3.3
1
0
3.320
3.310
3.300
0
5
3.3 0
3.2
0
9
5
3.2
3.2
9
0
8
5
3.2
8
0
4.8
9.8
Vin (V)
14.8
1
0
1
0
0
1
0
0
0
OutputCurrent(mA)
Figure 1. Load Regulation for SPX1202M3-3.3;
Figure 2. Line Regulation for SPX1202M3-3.3;
VIN=4.8V, COUT=2.2F
VIN=4.8V to 16V, COUT=2.2F
Current Limit VS Temp
2.00
1.3
1.2
1.1
1.0
0.9
Series 1
Series 2
1.50
1.00
0.50
0.00
1
0
0
2
0
0
3
0
0
4
0
0
5
0
0
6
0
0
7
0
0
8
0
0
9
0
0
1
0
0
0
-50
-25
0
25
50
75 100 125
OutputCurrent(mA)
Temp (C)
Figure 3. Dropout Voltage vs Output Current for
SPX1202M3-3.3; VIN=4.89V, COUT=2.2F
Figure 4. Current Limit for SP1202M3-3.3; VIN=4.8V,
CIN=COUT=1.0F, IOUTpulsed from 10mA to Current
Limit
3.340
Series 1
Series 2
SCOPE TRACING MISSING
2.320
3.300
3.280
3.260
3.240
-50
-30 -10
10
30
50
70
90 110 130
Temp (C)
Figure 5. Current Limit for SPX1202M3-3.3, Output
Voltage Deviation with IOUT=10mA to 1A Step.
Figure 6. VOUTvs Temperature I OUTpilsed from 10mA to
Current Limit
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
3
APPLICATION INFORMATION
50 X 50mm
Output Capacitor
To ensure the stability of the SPX1202, an
output capacitor of at least 10F (tantalum or
ceramic)or 50F (aluminum) is required. The
value may change based on the application
requirements of the output load or temperature
range. The value of ESR can vary based on the
type of capacitor used in the applications. The
recommended value for ESR is 0.5Ω or less. A
largervalueofoutput capacitance (up to 100F)
can improve the load transient response.
35 X 17mm
16 X 10mm
Figure 7. Substrate Layout for SOT-223
in the application can effect the thermal resis-
tance of the SPX1202. The actual thermal resis-
tance can be determined with experimentation.
SOLDERING METHODS
The SPX1202 SOT-223 package is designed to
be compatible with infrared reflow or vapor-
phase reflow soldering techniques. During sol-
dering, 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.
SPX1202 power dissipation is calculated as
follows:
PD= (V IN- V OUT)(IOUT
)
Maximum Junction Temperature range:
Hand soldering and wave soldering should be
avoided since these methods can cause damage
to the device with excessive thermal gradients
on the package. The SOT-223 recommended
soldering method are as follows: vapor phase
reflow and infrared reflow with the component
preheated to within 65C of the soldering tem-
perature range
TJ= T AMBIENT(max) + P D* (Thermal Resistance)
(Junction-to-ambient)
Maximum junction temperature must not ex-
ceed the 125C.
Ripple Rejection
Ripple rejection can be improved by adding a
capacitor between the ADJ pin and ground as
shown in Figure 7. When ADJ pin bypassing is
used, the value of the output capacitor required
increases to its maximum. If the ADJ pin is not
bypassed, the value of the output capacitor can
beloweredto10Fforanelectrolyticaluminum
capacitor or 2.2F for a solid tantalum capacitor
(Fig 10).
THERMAL CHARACTERISTICS
The thermal resistance of SPX1202 depends on
the type of package and PC board layout as
shown in Table 1. The SPX1202 features the
internal thermal limiting to protect the device
during overload conditions. Special care needs
to be taken during continuous load conditions
such that the maximum junction temperature
does not exceed 125C. Thermal protection is
activatedat>144Canddeactiviatedat<137C.
However the value of the ADJ-bypass capacitor
should be chosen with respect to the following
equation:
C = 1 / ( 6.28 * FR* R 1)
Taking the FR-4 printed circuit board and 1/16
thick with 1 ounce copper foil as an experiment,
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 sub-
strate. Refer to table 1 for the results of the
experiment.
Where C = value of the capacitor in Farads
(select an equal or larger standard value),
F = ripple frequency in Hz,
RR1= value of resistor R 1in Ohms.
If an ADJ-bypass capacitor is used, the ampli-
The thermal interaction from other components
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢁ
tude of the output ripple will be independent of
the output voltage. If an ADJ-bypass capacitor
isnotused,theoutputripplewillbeproportional
to the ratio of the output voltage to the reference
voltage:
The output of the adjustable regulator can be set
to any voltage between 1.25V and 15V. The
value of V
can be quickly approximated
using the foOrmUTula. (Figure 9)
VOUT=1.25 *(R1+ R 2)/R1.
M = VOUT/ V REF
A small correction to this formula is required
depending on the values of resistors R1 and R2,
sinceadjustablepincurrent(approx50A)flows
through R2. When IADJ is taken into account, the
formula becomes
Where M = multiplier for the ripple seen when
the ADJ pin is optimally bypassed.
VREF=1.25V
Output Voltage
VOUT= V REF(1+ (R2/R1)) + IADJ* R 2,
where VREF=1.25V.
PC BOARD
AREA mm2
TOPSIDE COPPER BACKSIDE COPPER
THERMAL RESISTANCE
JUNCTION TO AMBIENT
AREA mm2
AREA mm2
C/W
2500
2500
2500
2500
2500
1600
2500
2500
1600
900
2500
1250
950
2500
1800
600
1250
915
600
2500
2500
2500
0
46
47
49
51
53
55
58
59
67
72
85
0
1600
0
0
0
900
0
240
240
900
Table 1
TYPICAL APPLICATIONS
V IN
VIN
VOUT
SPX1202
SPX1202
IN
OUT
OUT
IN
+
+
4.7F
C2
C1
C 2
C1
4.7F
VREF
R1
R2
ADJ
IADJ
50A
ADJ
R1
IOUT
VREF
R1
LOAD
VOUT = V
) +I
ADJR
REF (1+R 2 /R1
IOUT
=
2
Figure 8. 600mA Current Source
Figure 9. Typical Adjustable Regulator
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢂ
SPX1202
SPX1202
(Note A)
V IN
5V
OUT
VIN
IN
5V
IN
OUT
VOUT
(Note A)
+
1kΩ
1%
4.7F
ADJ
ADJ
R1
+
+
4.7F
1kΩ,
1%
10F
1k
TTL
Input
2N3904
10F
330Ω
1%
R2
1k
+
C1
10F*
*C 1 improves ripple rejection.
330Ω
1%
ZCshould be ~ R1 at ripple frequency
Note A: VIN(MIN)= (Intended VOUT ) + (V
)
DROPOUT (MAX)
) + (V DROPOUT (MAX)
V = (Intended VOUT
IN(MIN)
Note A:
Figure 10. Improving Ripple Rejection
Figure 11. 5V Regulator with Shutdown
LAYOUT CONSIDERATIONS
Parasiticlineresistancecandegradeloadregulation. Inordernottoaffectthebehavioroftheregulator,
it is best to connect R1 to the case as illustrated in Figure 12. For the same reason, R2 should be
connected to the negative side of the load.
RPParasitic Line
Resistance
VIN
VOUT
SPX1202
Connect R1 to
Case of Regulator
ADJ
R 1
R L
R 2
to Load
Connect R2
Figure 12. Recommended Connections for Best Results
PACKAGE PINOUTS
SOT-223 (M3)
TO-220-3 (U)
TO-263-3 (T)
TO-252 (R)
1
2
3
1
2
3
2
1
3
1
2
3
ADJ/GND
VOUT
VIN
ADJ/GND
VOUT
VIN
Top View
ADJ/GND
VOUT
VIN
Front View
Top View
ADJ/GND
VOUT
VIN
Front View
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
6
PAckAꢀꢁ: 3 Pin SOT-23
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
7
PAckAꢀꢁ: 3 Pin TO-252
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢃ
PAckAꢀꢁ: 3 Pin TO-220
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢄ
PAckAꢀꢁ: 3 Pin TO-263
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢀ0
ORDꢁRinꢀ inFORMATiOn
Part Number
Package RoHS Sta-
Pack
Code
tus Quantity
SPXꢀ202M3
SOT-223-3
SOT-223-3
SOT-223-3
SOT-223-3
SOT-223-3
SOT-223-3
SOT-23-3
SOT-223-3
SOT-223-3
SOT-223-3
SOT-223-3
OBS
OBS
OBS
OBS
OBS
OBS
EOL
OBS
OBS
OBS
EOL
OBS
OBS
OBS
EOL
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
Bulk
2ꢂ00
Bulk
2ꢂ00
Bulk
2ꢂ00
Bulk
2ꢂ00
Bulk
2ꢂ00
Bulk
2ꢂ00
Bulk
2ꢂ00
Bulk
2ꢂ00
Bulk
2000
Bulk
2000
Bulk
2000
Bulk
2000
Bulk
2000
Bulk
2000
Bulk
2000
Bulk
2000
SPXꢀ202M3/TR
SPXꢀ202M3-2-ꢂ
SPXꢀ202M3-2-ꢂ/TR
SPXꢀ202M3-3-0
SPXꢀ202M3-3-0/TR
SPXꢀ202M3-3-3
SPXꢀ202M3-3-3/TR
SPXꢀ202M3-L
▪
▪
▪
▪
▪
▪
▪
▪
SPXꢀ202M3-L/TR
SPXꢀ202M3-L-2-ꢂ
SPXꢀ202M3-L-2-ꢂ/TR SOT-223-3
SPXꢀ202M3-L-3-0 SOT-223-3
SPXꢀ202M3-L-3-0/TR SOT-223-3
SPXꢀ202M3-L-3-3 SOT-223-3
SPXꢀ202M3-L-3-3/TR SOT-223-3
SPXꢀ202R
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
TO-2ꢂ2
SPXꢀ202R/TR
SPXꢀ202R-2-ꢂ
SPXꢀ202R-2-ꢂ/TR
SPXꢀ202R-3-0
SPXꢀ202R-3-0/TR
SPXꢀ202R-3-3
SPXꢀ202R-3-3/TR
SPXꢀ202R-L
▪
▪
▪
▪
▪
▪
▪
▪
SPXꢀ202R-L/TR
SPXꢀ202R-L-2-ꢂ
SPXꢀ202R-L-2-ꢂ/TR
SPXꢀ202R-L-3-0
SPXꢀ202R-L-3-0/TR
SPXꢀ202R-L-3-3
SPXꢀ202R-L-3-3/TR
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢀꢀ
ORDꢁRinꢀ inFORMATiOn
continued
Part Number
Package RoHS Sta-
Pack
Code
tus Quantity
SPXꢀ202T
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-263-3
TO-220-3
TO-220-3
TO-220-3
TO-220-3
TO-220-3
TO-220-3
TO-220-3
TO-220-3
OBS
OBS
OBS
OBS
OBS
OBS
EOL
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
OBS
EOL
OBS
OBS
EOL
OBS
OBS
OBS
OBS
Bulk
2000
Bulk
ꢂ00
SPXꢀ202T/TR
SPXꢀ202T-2-ꢂ
SPXꢀ202T-2-ꢂ/TR
SPXꢀ202T-3-0
SPXꢀ202T-3-0/TR
SPXꢀ202T-3-3
SPXꢀ202T-3-3/TR
SPXꢀ202T-L
Bulk
ꢂ00
Bulk
ꢂ00
▪
▪
▪
▪
▪
▪
▪
▪
Bulk
ꢂ00
SPXꢀ202T-L/TR
SPXꢀ202T-L-2-ꢂ
SPXꢀ202T-L-2-ꢂ/TR
SPXꢀ202T-L-3-0
SPXꢀ202T-L-3-0/TR
SPXꢀ202T-L-3-3
SPXꢀ202T-L-3-3/TR
SPXꢀ202U
Bulk
ꢂ00
Bulk
ꢂ00
Bulk
ꢂ00
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
SPXꢀ202U-2-ꢂ
SPXꢀ202U-3-0
SPXꢀ202U-3-3
SPXꢀ202U-L
▪
▪
▪
▪
SPXꢀ202U-L-2-ꢂ
SPXꢀ202U-L-3-0
SPXꢀ202U-L-3-3
Solved by
Sꢂpex corporatꢂoꢃ
Headquarters aꢃd
TM
Sales Office
233 South Hillview Drive
Solved by Sipex
tm
Milpitas, CA ꢄꢂ03ꢂ
TEL: (ꢁ0ꢃ) ꢄ3ꢁ-7ꢂ00
FAX: (ꢁ0ꢃ) ꢄ3ꢂ-7600
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 herein; neither does it convey
any license under its patent rights nor the rights of others.
Marꢀ3-07
SPXꢀ202 600 mA Low Dropout Linear Regulator
© 2007 Sipex Corporation
ꢀ2
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