SPX1202T-L-3.0 [SIPEX]
Fixed Positive LDO Regulator, 3V, 1.15V Dropout, PSSO3, TO-263, 3 PIN;型号: | SPX1202T-L-3.0 |
厂家: | SIPEX CORPORATION |
描述: | Fixed Positive LDO Regulator, 3V, 1.15V Dropout, PSSO3, TO-263, 3 PIN 输出元件 调节器 |
文件: | 总11页 (文件大小:201K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
®
SPX1202
600mA Low Dropout Linear 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
■ 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
■ Disk Drives
■ Portable Consumer Equipment
■ Portable Instrumentation
■ SMPS Post-Regulator
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 10µF provides unconditional stability while a smaller 2.2µF
capacitor is sufficient for most applications.
BLOCK DIAGRAM
VIN
+
Current Limit
-
VOUT
ICL
AMP
VREF
Thermal Limit
ADJ/GND
~
IADJ 50µA
–
I TL
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
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 ..................................................... +20V
ESD Rating .............................................................. 2kV min
ELECTRICAL CHARACTERISTICS
at VIN=VOUT + 1.5V, TA = 25°C, CIN = COUT = 10µF, 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, VIN = 5.00V
2.475
2.500
2.525
V
0 ≤ IOUT ≤ 600mA, 4.50V ≤ VIN ≤ 10V
2.450
2.550
3.0V Version
Output Voltage
IOUT = 10mA, VIN = 5.00V
0 ≤ IOUT ≤ 600mA, 4.50V ≤ VIN ≤ 10V
2.970
2.940
3.000
3.300
1.250
3.030
3.060
V
V
3.3V Version
Output Voltage
IOUT = 10mA, VIN = 5.00V
0 ≤ IOUT ≤ 600mA, 4.50V ≤ VIN ≤ 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,VOUT=3.00,IOUT=0
4.80V≤VIN≤ 12V,VOUT=3.30,IOUT=0
6.50V≤VIN≤ 12V,VOUT=5.00,IOUT=0
1.00
1.00
1.00
7.00
7.00
10.00
mV
Load Regulation
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=5.0
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
µA
(VIN-VOUT)=5V
.850
0.01
60
1.0
0.1
75
A
Thermal Regulation
Ripple Rejection
25°C, 30mS Pulse
%/W
dB
fRIPPLE=120Hz, (VIN-VOUT)=3V,
VRIPPLE=1VPP
Long Term Stability
RMS Output Noise
125°C, 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.
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
2
TYPICAL PERFORMANCE CHARACTERISTICS
Line Regulation at 25°C
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
Series 1
3.330
Series 2
3.320
3.310
3.300
4.8
9.8
Vin (V)
14.8
10
100
1000
Output Current (mA)
Figure 1. Load Regulation for SPX1202M3-3.3;
Figure 2. Line Regulation for SPX1202M3-3.3;
VIN=4.8V, COUT=2.2µF
VIN=4.8V to 16V, COUT=2.2µF
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
100
200
300
400
500
600
700
800
900 1000
-50
-25
0
25
50
75 100 125
Output Current (mA)
Temp (°C)
Figure 3. Dropout Voltage vs Output Current for
SPX1202M3-3.3; VIN=4.89V, COUT=2.2µF
Figure 4. Current Limit for SP1202M3-3.3; VIN=4.8V,
CIN=COUT=1.0µF, IOUT pulsed 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. VOUT vs Temperature IOUT pilsed from 10mA to
Current Limit
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
3
APPLICATION INFORMATION
50 X 50mm
Output Capacitor
To ensure the stability of the SPX1202, an
output capacitor of at least 10µF (tantalum or
ceramic)or 50µF (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
largervalue ofoutput capacitance (up to100µF)
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 = (VIN - VOUT)(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 65°C of the soldering tem-
perature range
TJ = TAMBIENT (max) + PD* (Thermal Resistance)
(Junction-to-ambient)
Maximum junction temperature must not ex-
ceed the 125°C.
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
beloweredto10µFforanelectrolyticaluminum
capacitor or 2.2µF 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 125°C. Thermal protection is
activatedat>144°Canddeactiviatedat<137°C.
However the value of the ADJ-bypass capacitor
should be chosen with respect to the following
equation:
C = 1 / ( 6.28 * FR * R1 )
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,
RR = value of resistor R1 in Ohms.
If an ADJ-1bypass capacitor is used, the ampli-
The thermal interaction from other components
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
4
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 + R2)/R1.
M = VOUT / VREF
A small correction to this formula is required
depending on the values of resistors R1 and R2,
sinceadjustablepincurrent(approx50µA)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.
V
REF =1.25V
Output Voltage
VOUT = VREF(1+ (R2/R1)) + IADJ * R2,
where VREF=1.25V.
PC BOARD
AREA mm2
TOPSIDE COPPER BACKSIDE COPPER
THERMAL RESISTANCE
JUNCTION TO AMBIENT
°C/W
AREA mm2
AREA mm2
2500
2500
2500
2500
2500
1600
2500
2500
1600
900
2500
1250
950
2500
1800
600
1250
915
600
2500
2500
2500
0
0
1600
0
0
0
900
0
46
47
49
51
53
55
58
59
67
72
85
240
240
900
Table 1
TYPICAL APPLICATIONS
V IN
VIN
VOUT
SPX1202
SPX1202
IN
OUT
OUT
IN
+
+
4.7µF
C1
C2
C 2
C1
4.7µF
VREF
R1
R2
ADJ
IADJ
50µA
ADJ
R1
IOUT
VREF
R1
LOAD
VOUT = V
) +I
ADJ R 2
REF (1+R 2 /R1
IOUT
=
Figure 8. 600mA Current Source
Figure 9. Typical Adjustable Regulator
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
5
SPX1202
SPX1202
(Note A)
V IN
5V
OUT
VIN
IN
5V
IN
OUT
VOUT
(Note A)
+
1
kΩ
1%
4.7µF
ADJ
ADJ
R1
+
+
4.7µF
1kΩ,
1%
10µF
1k
TTL
Input
2N3904
10µF
330Ω
1%
R2
1k
+
C1
10µF*
*C 1 improves ripple rejection.
330Ω
1%
ZC should 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.
RP Parasitic 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
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
6
PACKAGE: 3 PIN SOT-223
C
D
b2
C
N
C
E
See detail
A
E1
A
A1
H
1
B
B
GAUGE
PLANE
e
b
SEATING
PLANE
L
0
C
b
3 PIN SOT-223
JEDEC TO-261
(AA) Variation
Dimensions in (mm)
MIN NOM MAX
WITH PLATING
c
A
-
-
-
1.80
0.10
0.02
A1
1.50 1.60 1.70
A2
b
Section B-B
0.66 0.76
2.90 3.00
0.84
3.10
BASE METAL
b2
c
0.23
6.30
0.30
0.35
6.70
6.50
D
c
6.70
3.30
7.00 7.30
3.50 3.70
E
E1
e
b2
2.30 BASIC
Section C-C
e1
4.60 BASIC
L
ø
0.75
0º
-
-
-
10º
3 PIN SOT-223
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
7
PACKAGE: 3 PIN TO-252
GAUGE PLANE
c
C
SEATING PLANE
c
L
A1
L2
O
(L1)
b
E1
WITH PLATING
E1/2
c
D1
BASE METAL
CONTACT AREA
3 PIN TO-252
JEDEC TO-252
(AA) Variation
Dimensions in inches
MIN NOM MAX
-
-
.005
.024
A1
c
.018
-
-
.205
.170
-
-
D1
E1
H
-
.370
-
.410
.070
.055 .060
.108 REF
.020 BSC
L
L1
3 PIN TO-252
L2
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
8
PACKAGE: 3 PIN TO-220
A
E
B
E/2
E2
SEATING
PLANE
A
øP
Q
A1
H1
D
D1
CHAMFER
OPTIONAL
L1
1
D
D
C
C
L
b
A
e
C
e1
A2
3 PIN TO-220
JEDEC TO-220
(AB) Variation
Dimensions in
(mm)
MIN NOM MAX
b
A
.140
.020
-
-
.190
.055
A1
A2
b
WITH PLATING
c
.080
-
.115
.015 .027 .040
b2
c
.045
.014
.560
-
.070
.024
.650
-
-
D
D1
.330
.480
.380
.270
-
-
-
-
-
.355
.507
.420
.350
BASE METAL
CONTACT AREA
D2
E
E1
E2
e
-
.030
.100 BSC
.200 BSC
e1
.230
-
.270
.250
H1
L1
-
-
3 PIN TO-220
-
-
-
L2
.139
.100
-
.161
.135
∆P
Q
-
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
9
PACKAGE: 3 PIN TO-263
SEATING PLANE
A
E
E/2
C2
L1
D
H
1
2
3
B
B
c
e
See View C
b
b2
SEATING
PLANE
GAUGE PLANE
0º-8º
A1
L
3-PIN TO-263
JEDEC TO-263
(AA) Variation
Dimensions in inches
MIN NOM MAX
View C
A
A1
b
.160
.000
-
.190
.010
-
.020
.015
.330
-
.039
.029
.380
b
c
-
-
D
WITH PLATING
c
D1
E
.270
-
-
.420
-
.380
.245
-
E1
-
e
.100 BSC
.625
H
.575
-
BASE METAL
SECTION B-B
L
.070
-
.110
.066
.070
L1
L2
L3
-
-
-
-
.010 BSC
3 PIN TO-263
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
10
ORDERING INFORMATION
PART NUMBER
SPX1202U
ACC.
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 VOLTAGE
Adj
PACKAGE
3 Pin TO220
3 Pin TO220
3 Pin TO220
3 Pin TO220
3 Pin TO-263
3 Pin TO-263
3 Pin TO-263
3 Pin TO-263
3 Pin TO-263
3 Pin TO-263
3 Pin TO-263
3 Pin TO-263
3 Pin SOT-223
3 Pin SOT-223
3 Pin SOT-223
3 Pin SOT-223
3 Pin SOT-223
3 Pin SOT-223
3 Pin SOT-223
3 Pin SOT-223
3 Pin TO-252
3 Pin TO-252
3 Pin TO-252
3 Pin TO-252
3 Pin TO-252
3 Pin TO-252
3 Pin TO-252
3 Pin TO-252
SPX1202U-2.5
SPX1202U-3.0
SPX1202U-3.3
SPX1202T
2.5V
3.0V
3.3V
Adj
SPX1202T/TR
SPX1202T-2.5
SPX1202T-2.5/TR
SPX1202T-3.0
SPX1202T-3.0/TR
SPX1202T-3.3
SPX1202T-3.3/TR
SPX1202M3
Adj
2.5V
2.5V
3.0V
3.0V
3.3V
3.3V
Adj
SPX1202M3/TR
SPX1202M3-2.5
SPX1202M3-2.5/TR
SPX1202M3-3.0
SPX1202M3-3.0/TR
SPX1202M3-3.3
SPX1202M3-3.3/TR
SPX1202R
Adj
2.5V
2.5V
3.0V
3.0V
3.3V
3.3V
Adj
SPX1202R/TR
SPX1202R-2.5
SPX1202R-2.5/TR
SPX1202R-3.0
SPX1202R-3.0/TR
SPX1202R-3.3
SPX1202R-3.3/TR
Adj
2.5V
2.5V
3.0V
3.0V
3.3V
3.3V
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX1587AT-5.0/TR = standard; SPX1587AT-L-5.0/TR = lead free
/TR = Tape and Reel
Pack quantity is 500 for TO-263, 2,000 for TO-252 and 2,500 for SOT-223.
Sipex Corporation
Headquarters
233 South Hillview Drive
Corporation
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
ANALOG EXCELLENCE
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
© Copyright 2004 Sipex Corporation
11
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