SIPEX SPX1202M3-1.5

SPX1202
®
600mA Low Dropout Linear Regulator
FEATURES
■ Guaranteed 600mA Output
■ Three Terminal Adjustable or Fixed
2.5V, 3V and 3.3V
■ Low Quiescent Current
■ 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
APPLICATIONS
■ SCSI-II Active Terminator
■ Portable/ Palm Top / Notebook
Computers
■ Battery Chargers
■ 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
1
© Copyright 2004 Sipex Corporation
ABSOLUTE MAXIMUM RATINGS
Operating Junction Temperature Range ..... -40°C to +125°C
Input Supply Voltage ..................................................... +20V
ESD Rating .............................................................. 2kV min
Power Dissipation ...................................... Internally Limited
Lead Temperature (soldering, 5 seconds) .................. 260°C
Storage Temperature Range ...................... -65°C to +150°C
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
CONDITIONS
TYP
MIN
MAX
UNITS
IOUT = 10mA, VIN = 5.00V
0 ≤ IOUT ≤ 600mA, 4.50V ≤ VIN ≤ 10V
2.475
2.450
2.500
2.525
2.550
V
IOUT = 10mA, VIN = 5.00V
0 ≤ IOUT ≤ 600mA, 4.50V ≤ VIN ≤ 10V
2.970
2.940
3.000
3.030
3.060
V
IOUT = 10mA, VIN = 5.00V
0 ≤ IOUT ≤ 600mA, 4.50V ≤ VIN ≤ 10V
3.267
3.234
3.300
3.333
3.366
V
Reference Voltage
IOUT=10mA, (VIN - VOUT ) = 2V
10≤IOUT≤ 600mA, 1.4V≤(VIN-VOUT)≤ 10V
1.238
1.225
1.250
1.262
1.270
V
Output Voltage
Temperature Stability
(Note 1)
0.05
%
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
Dropout Voltage
(Note 2)
IL =100mA
IL =600mA
1.00
1.05
1.10
1.15
V
Quiescent Current
4.25V≤VIN≤ 6.5V
5.00
10.00
mA
2.5V Version
Output Voltage
3.0V Version
Output Voltage
3.3V Version
Output Voltage
All Output Options
Adjust Pin Current
50
µA
Current Limit
(VIN-VOUT)=5V
.850
1.0
A
Thermal Regulation
25°C, 30mS Pulse
0.01
0.1
%/W
Ripple Rejection
fRIPPLE=120Hz, (VIN-VOUT)=3V,
VRIPPLE=1VPP
60
75
dB
Long Term Stability
125°C, 1000Hrs
0.03
%
RMS Output Noise
% of VOUT, 10Hz≤f≤10kHz
0.003
%
Thermal Resistance
Junction to Case, at tab
15
°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
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© Copyright 2004 Sipex Corporation
TYPICAL PERFORMANCE CHARACTERISTICS
Series 1
Series 2
3.330
Vout (V)
Output Voltage (V)
Line Regulation at 25°C
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
3.320
3.310
3.300
10
100
4.8
1000
9.8
14.8
Vin (V)
Output Current (mA)
Figure 1. Load Regulation for SPX1202M3-3.3;
VIN=4.8V, COUT=2.2µF
Figure 2. Line Regulation for SPX1202M3-3.3;
VIN=4.8V to 16V, COUT=2.2µF
Current Limit (A)
Dropout Voltage (V)
Current Limit VS Temp
2.00
1.3
1.2
1.1
1.0
0.9
100
200
300
400
500
600
700
800
900
1000
1.00
0.50
0.00
-50
Output Current (mA)
Series 1
Series 2
1.50
-25
0
25
50
75
100 125
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
SCOPE TRACING MISSING
Series 1
Series 2
VOUT (V)
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.
Date: 5/25/04
Figure 6. VOUT vs Temperature IOUT pilsed from 10mA to
Current Limit
SPX1202 600mA Low Dropout Positive Linear Regulator
3
© Copyright 2004 Sipex Corporation
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
larger value of output capacitance (up to 100µF)
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 resistance of the SPX1202. The actual thermal resistance can be determined with experimentation.
SOLDERING METHODS
The SPX1202 SOT-223 package is designed to
be compatible with infrared reflow or vaporphase 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.
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 temperature range
TJ = TAMBIENT (max) + PD* (Thermal Resistance)
(Junction-to-ambient)
Maximum junction temperature must not exceed 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
be lowered to 10µF for an electrolytic aluminum
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
activated at >144°C and deactiviated at <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 substrate. Refer to table 1 for the results of the
experiment.
The thermal interaction from other components
Date: 5/25/04
Where C = value of the capacitor in Farads
(select an equal or larger standard value),
FR = ripple frequency in Hz,
R1 = value of resistor R1 in Ohms.
If an ADJ-bypass capacitor is used, the ampli-
SPX1202 600mA Low Dropout Positive Linear Regulator
4
© Copyright 2004 Sipex Corporation
tude of the output ripple will be independent of
the output voltage. If an ADJ-bypass capacitor
is not used, the output ripple will be proportional
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 VOUT can be quickly approximated
using the formula. (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,
since adjustable pin current (approx 50µA) 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 = VREF(1+ (R2/R1)) + IADJ * R2,
where VREF=1.25V.
PC BOARD
AREA mm2
TOPSIDE COPPER
AREA mm2
2500
2500
2500
2500
2500
1600
2500
2500
1600
900
900
2500
1250
950
2500
1800
600
1250
915
600
240
240
BACKSIDE COPPER
AREA mm2
THERMAL RESISTANCE
JUNCTION TO AMBIENT
°C/W
2500
2500
2500
0
0
1600
0
0
0
900
0
46
47
49
51
53
55
58
59
67
72
85
Table 1
TYPICAL APPLICATIONS
V IN
IN
4.7µF +
SPX1202
VIN
OUT
C1
IN
4.7µF +
C2
R1
VREF
VREF
R1
IOUT
VOUT = V REF (1+R 2 /R1 ) +I ADJ R 2
LOAD
R1
Figure 8. 600mA Current Source
Date: 5/25/04
VOUT
OUT
C2
ADJ
I ADJ
50µA
ADJ
IOUT =
SPX1202
C1
R2
Figure 9. Typical Adjustable Regulator
SPX1202 600mA Low Dropout Positive Linear Regulator
5
© Copyright 2004 Sipex Corporation
SPX1202
(Note A)
V IN
IN
SPX1202
5V
V IN
(Note A)
VOUT
OUT
+
4.7µF
ADJ
1kΩ
1%
+
+
+
4.7µF
10µF
1k
TTL
Input
10µF
*C 1 improves ripple rejection.
ZC should be ~ R1 at ripple frequency
5V
ADJ
R1
1kΩ,
1%
R2
330Ω
1%
OUT
IN
2N3904
C1
10µF*
330Ω
1%
1k
Note A: VIN(MIN) = (Intended VOUT ) + (VDROPOUT (MAX) )
Note A: VIN(MIN) = (Intended VOUT ) + (V
DROPOUT (MAX) )
Figure 10. Improving Ripple Rejection
Figure 11. 5V Regulator with Shutdown
LAYOUT CONSIDERATIONS
Parasitic line resistance can degrade load regulation. In order not to affect the behavior of the regulator,
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.
R P Parasitic Line
Resistance
V IN
V OUT
SPX1202
Connect R 1 to
Case of Regulator
ADJ
R1
RL
R2
Connect R 2 to Load
Figure 12. Recommended Connections for Best Results
PACKAGE PINOUTS
SOT-223 (M3)
1
2
3
TO-220-3 (U)
TO-252 (R)
1
2
3
1
1
ADJ/GND
V OUT
Top View
TO-263-3 (T)
2
2
3
3
V IN
ADJ/GND
V
OUT
V IN
ADJ/GND
Front View
ADJ/GND
V OUT
V IN
Top View
V OUT
V IN
Front View
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
6
© Copyright 2004 Sipex Corporation
PACKAGE: 3 PIN SOT-223
C
D
C
b2
C
N
E
See detail
A
E1
A
A1
H
1
B
B
GAUGE
PLANE
e
b
SEATING
PLANE
L
0
C
3 PIN SOT-223
JEDEC TO-261
(AA) Variation
A
A1
0.02
-
1.80
-
0.10
1.50
1.60
1.70
b
0.76
0.84
b2
2.90
3.00
3.10
c
0.23
0.30
0.35
D
6.30
6.50
6.70
E
6.70
7.00
7.30
E1
3.30
3.50
3.70
e
2.30 BASIC
e1
4.60 BASIC
0.75
0º
WITH PLATING
NOM MAX
-
0.66
L
Date: 5/25/04
MIN
A2
ø
b
Dimensions in (mm)
-
c
Section B-B
BASE METAL
c
b2
Section C-C
-
10º
3 PIN SOT-223
SPX1202 600mA Low Dropout Positive Linear Regulator
7
© Copyright 2004 Sipex Corporation
PACKAGE: 3 PIN TO-252
GAUGE PLANE
L2
c
C
c
L
O
SEATING PLANE
A1
(L1)
b
E1
WITH PLATING
E1/2
c
D1
BASE METAL
CONTACT AREA
3 PIN TO-252
JEDEC TO-252
(AA) Variation
MIN
A1
-
c
.018
D1
E1
Date: 5/25/04
Dimensions in inches
NOM MAX
-
.205
.170
.005
-
.024
-
-
-
H
.370
-
.410
L
.055
.060
.070
L1
.108 REF
L2
.020 BSC
3 PIN TO-252
SPX1202 600mA Low Dropout Positive Linear Regulator
8
© Copyright 2004 Sipex Corporation
PACKAGE: 3 PIN TO-220
E
A
B
E/2
E2
SEATING
PLANE
A
øP
Q
A1
H1
D
D1
L1
CHAMFER
OPTIONAL
1
D
C C
D
L
b
e
A
C
e1
A2
Dimensions in
(mm)
3 PIN TO-220
JEDEC TO-220
(AB) Variation
MIN
.140
-
.190
A1
.020
-
.055
A2
.080
-
.115
b
.015
.027
.040
b2
.045
-
.070
c
.014
-
.024
D
D1
.560
-
.650
D2
.330
.480
-
.355
.507
E
E1
E2
.380
.270
-
-
.420
.350
.030
b
WITH PLATING
c
BASE METAL
CONTACT AREA
.100 BSC
e
e1
Date: 5/25/04
NOM MAX
A
.200 BSC
H1
L1
.230
-
.270
-
-
.250
L2
-
-
-
∆P
Q
.139
-
.100
-
3 PIN TO-220
.161
.135
SPX1202 600mA Low Dropout Positive Linear Regulator
9
© Copyright 2004 Sipex Corporation
PACKAGE: 3 PIN TO-263
SEATING PLANE
E
A
E/2
C2
L1
H
D
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
A
.160
-
.190
A1
.000
-
.010
b
.020
-
.039
c
.015
-
.029
D
.330
-
.380
D1
.270
E
E1
-
-
.380
-
.420
.245
-
-
e
b
WITH PLATING
c
.100 BSC
H
.575
-
.625
L
.070
-
.110
L1
-
-
.066
L2
-
-
.070
L3
View C
NOM MAX
BASE METAL
SECTION B-B
.010 BSC
3 PIN TO-263
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
10
© Copyright 2004 Sipex Corporation
ORDERING INFORMATION
PART NUMBER
ACC.
OUTPUT VOLTAGE
SPX1202U
1%
Adj
3 Pin TO220
PACKAGE
SPX1202U-2.5
1%
2.5V
3 Pin TO220
SPX1202U-3.0
1%
3.0V
3 Pin TO220
SPX1202U-3.3
1%
3.3V
3 Pin TO220
SPX1202T
1%
Adj
3 Pin TO-263
SPX1202T/TR
1%
Adj
3 Pin TO-263
SPX1202T-2.5
1%
2.5V
3 Pin TO-263
SPX1202T-2.5/TR
1%
2.5V
3 Pin TO-263
SPX1202T-3.0
1%
3.0V
3 Pin TO-263
SPX1202T-3.0/TR
1%
3.0V
3 Pin TO-263
SPX1202T-3.3
1%
3.3V
3 Pin TO-263
SPX1202T-3.3/TR
1%
3.3V
3 Pin TO-263
SPX1202M3
1%
Adj
3 Pin SOT-223
SPX1202M3/TR
1%
Adj
3 Pin SOT-223
SPX1202M3-2.5
1%
2.5V
3 Pin SOT-223
SPX1202M3-2.5/TR
1%
2.5V
3 Pin SOT-223
SPX1202M3-3.0
1%
3.0V
3 Pin SOT-223
SPX1202M3-3.0/TR
1%
3.0V
3 Pin SOT-223
SPX1202M3-3.3
1%
3.3V
3 Pin SOT-223
SPX1202M3-3.3/TR
1%
3.3V
3 Pin SOT-223
SPX1202R
1%
Adj
3 Pin TO-252
SPX1202R/TR
1%
Adj
3 Pin TO-252
SPX1202R-2.5
1%
2.5V
3 Pin TO-252
SPX1202R-2.5/TR
1%
2.5V
3 Pin TO-252
SPX1202R-3.0
1%
3.0V
3 Pin TO-252
SPX1202R-3.0/TR
1%
3.0V
3 Pin TO-252
SPX1202R-3.3
1%
3.3V
3 Pin TO-252
SPX1202R-3.3/TR
1%
3.3V
3 Pin TO-252
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
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Corporation
ANALOG EXCELLENCE
Date: 5/25/04
SPX1202 600mA Low Dropout Positive Linear Regulator
11
© Copyright 2004 Sipex Corporation