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SPX1202
TM
600mA Low Dropout Voltage 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 Available in Lead Free Packaging 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 10F provides unconditional stability while a smaller 2.2F capacitor is sufficient for most applications. BLOCK DIAGRAM
VIN
Current Limit
+ VOUT ICL AMP
Thermal Limit
VREF
ADJ/GND I TL IADJ ~50A -
Mar3-07
SPX202 600 mA Low Dropout Linear Regulator
(c) 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 3.0V Version Output Voltage 3.3V Version Output Voltage All Output Options Reference Voltage Output Voltage Temperature Stability Line Regulation
CONDITIONS IOUT= 10mA, V IN= 5.00V 0 I OUT 600mA, 4.50V V IN 10V IOUT= 10mA, V IN= 5.00V 0 I OUT 600mA, 4.50V V IN 10V IOUT= 10mA, V IN= 5.00V 0 I OUT 600mA, 4.50V V IN 10V IOUT=10mA, (VIN - VOUT ) = 2V 10IOUT600mA, 1.4V (VIN-VOUT)10V (Note 1) 4.50VVIN12V,V OUT=3.00,IOUT=0 4.80VVIN12V,V OUT=3.30,IOUT=0 6.50VVIN12V,V OUT=5.00,IOUT=0 0IOUT600mA,V IN=4.50V,VOUT=3.00 0IOUT600mA,V IN=4.80V,VOUT=3.30 0IOUT600mA,V IN=6.50V,VOUT=5.0 IL =100mA IL =600mA 4.25VVIN6.5V (VIN-VOUT)=5V 25C, 30mS Pulse fRIPPLE=120Hz, (VIN-VOUT)=3V, VRIPPLE=1VPP 125C, 1000Hrs % of VOUT, 10Hzf10kHz Junction to Case, at tab
TYP 2.475 2.450 2.970 2.940 3.267 3.234 1.238 1.225
MIN 2.500
MAX 2.525 2.550 3.030 3.060 3.333 3.366 1.262 1.270 0.05
UNITS V
3.000
V
3.300
V
1.250
V % mV
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.05 5.00 50 .850 0.01 60
7.00 7.00 10.00 12.00 12.00 15.00 1.10 1.15 10.00 1.0 0.1 75 0.03 0.003 15
Load Regulation
mV
Dropout Voltage (Note 2) Quiescent Current Adjust Pin Current Current Limit Thermal Regulation Ripple Rejection Long Term Stability RMS Output Noise Thermal Resistance
V mA A A %/W dB % % 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.
Mar3-07 SPX202 600 mA Low Dropout Linear Regulator (c) 2007 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS
Line Regulation at 25C
3.320 3.315 3.310 3.305 3.300 3.295 3.290 3.285 3.280 10 100 Output Current (mA) 1000
3.330
Vout (V)
Output Voltage (V)
Series 1 Series 2
3.320 3.310 3.300 4.8 9.8 Vin (V) 14.8
Figure 1. Load Regulation for SPX1202M3-3.3; VIN=4.8V, COUT=2.2F
Figure 2. Line Regulation for SPX1202M3-3.3; VIN=4.8V to 16V, COUT=2.2F
Current Limit VS Temp
Dropout Voltage (V)
1.3 1.2 1.1 1.0 0.9 100 200 300 400 500 600 700 800 900 1000 Output Current (mA)
Current Limit (A)
2.00 1.50 1.00 0.50 0.00 -50 -25 0 25 50 75
Series 1 Series 2
100 125
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
SCOPE TRACING MISSING
VOUT (V)
2.320 3.300 3.280 3.260 3.240 -50
Series 1 Series 2
-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.
Mar3-07
Figure 6. VOUTvs Temperature I OUTpilsed from 10mA to Current Limit
(c) 2007 Sipex Corporation
SPX202 600 mA Low Dropout Linear Regulator
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APPLICATION INFORMATION 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 0.5 or less. A larger value of output capacitance (up to 100F) can improve the load transient response. 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. 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 temperature range 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 activated at >144C and deactiviated at <137C. 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
Mar3-07
50 X 50mm
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. SPX1202 power dissipation is calculated as follows: PD= (V IN- V OUT)(IOUT) Maximum Junction Temperature range: TJ= T AMBIENT(max) + P D* (Thermal Resistance) (Junction-to-ambient) Maximum junction temperature must not exceed 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 be lowered to 10F for an electrolytic aluminum capacitor or 2.2F for a solid tantalum capacitor (Fig 10). However the value of the ADJ-bypass capacitor should be chosen with respect to the following equation: C = 1 / ( 6.28 * FR* R 1) Where C = value of the capacitor in Farads (select an equal or larger standard value), FR= ripple frequency in Hz, R1= value of resistor R 1in Ohms. If an ADJ-bypass capacitor is used, the ampli(c) 2007 Sipex Corporation
SPX202 600 mA Low Dropout Linear Regulator
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: M = VOUT/ V REF Where M = multiplier for the ripple seen when the ADJ pin is optimally bypassed. VREF=1.25V Output 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+ R 2)/R1. A small correction to this formula is required depending on the values of resistors R1 and R2, since adjustable pin current (approx 50A) flows through R2. When IADJ is taken into account, the formula becomes VOUT= V REF(1+ (R2/R1)) + IADJ* R 2, where VREF=1.25V.
PC BOARD AREA mm2
TOPSIDE COPPER AREA mm2
BACKSIDE COPPER AREA mm2
THERMAL RESISTANCE JUNCTION TO AMBIENT C/W
2500 2500 2500 2500 2500 1600 2500 2500 1600 900 900
Table 1
2500 1250 950 2500 1800 600 1250 915 600 240 240
2500 2500 2500 0 0 1600 0 0 0 900 0
46 47 49 51 53 55 58 59 67 72 85
TYPICAL APPLICATIONS
V IN 4.7F + C1
IN
SPX1202
ADJ
OUT C2 R1 IOUT LOAD
VIN 4.7F + C1
IN
SPX1202
ADJ I ADJ 50A
OUT VREF R 1 C2
VOUT
IOUT=
VREF R1
VOUT = V REF (1+R 2 /R1 ) +I ADJR
2
R2
Figure 8. 600mA Current Source
Mar3-07
Figure 9. Typical Adjustable Regulator
SPX202 600 mA Low Dropout Linear Regulator (c) 2007 Sipex Corporation
(Note A) V IN 4.7F
SPX1202
IN OUT ADJ
5V
SPX1202
VOUT
R1
V IN (Note A) +
IN ADJ OUT
5V 1k 1% + 10F
+ 1k, 1%
4.7F 1k 2N3904 1k
10F *C 1 improves ripple rejection. ZCshould be ~ R1 at ripple frequency R2 330 1% + C1 10F*
TTL Input
330 1%
Note A: VIN(MIN) = (Intended VOUT ) + (V
) DROPOUT (MAX)
Note A: VIN(MIN)= (Intended V OUT ) + (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 PParasitic Line Resistance SPX1202 Connect R 1 to Case of Regulator ADJ
V IN
V OUT
R1
R2
RL Connect R 2 to Load
Figure 12. Recommended Connections for Best Results
PACKAGE PINOUTS
SOT-223 (M3)
TO-252 (R)
TO-220-3 (U)
TO-263-3 (T)
1 ADJ/GND
2 V OUT
3 V IN
1
2
3 1 2 3
1
2
3
Top View
ADJ/GND
V
OUT
V IN ADJ/GND V OUT V IN
Front View
ADJ/GND
Top View
V OUT V IN
Front View
Mar3-07 SPX202 600 mA Low Dropout Linear Regulator (c) 2007 Sipex Corporation
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PAckAge: 3 Pin SOT-23
Mar3-07
SPX202 600 mA Low Dropout Linear Regulator
(c) 2007 Sipex Corporation
7
PAckAge: 3 Pin TO-252
Mar3-07
SPX202 600 mA Low Dropout Linear Regulator
(c) 2007 Sipex Corporation
PAckAge: 3 Pin TO-220
Mar3-07
SPX202 600 mA Low Dropout Linear Regulator
(c) 2007 Sipex Corporation
PAckAge: 3 Pin TO-263
Mar3-07
SPX202 600 mA Low Dropout Linear Regulator
(c) 2007 Sipex Corporation
0
ORDeRing inFORMATiOn
Part Number SPX202M3 SPX202M3/TR SPX202M3-2- SPX202M3-2-/TR SPX202M3-3-0 SPX202M3-3-0/TR SPX202M3-3-3 SPX202M3-3-3/TR SPX202M3-L SPX202M3-L/TR SPX202M3-L-2- SPX202M3-L-2-/TR SPX202M3-L-3-0 SPX202M3-L-3-0/TR SPX202M3-L-3-3 SPX202M3-L-3-3/TR SPX202R SPX202R/TR SPX202R-2- SPX202R-2-/TR SPX202R-3-0 SPX202R-3-0/TR SPX202R-3-3 SPX202R-3-3/TR SPX202R-L SPX202R-L/TR SPX202R-L-2- SPX202R-L-2-/TR SPX202R-L-3-0 SPX202R-L-3-0/TR SPX202R-L-3-3 SPX202R-L-3-3/TR
Mar3-07
Package RoHS StaPack Code tus Quantity SOT-223-3 OBS Bulk SOT-223-3 OBS 200 SOT-223-3 OBS Bulk SOT-223-3 OBS 200 SOT-223-3 OBS Bulk SOT-223-3 OBS 200 SOT-23-3 EOL Bulk SOT-223-3 OBS 200 SOT-223-3 OBS Bulk SOT-223-3 OBS 200 SOT-223-3 EOL Bulk SOT-223-3 OBS 200 SOT-223-3 OBS Bulk SOT-223-3 OBS 200 SOT-223-3 EOL Bulk SOT-223-3 OBS 200 TO-22 OBS Bulk TO-22 OBS 2000 TO-22 OBS Bulk TO-22 OBS 2000 TO-22 OBS Bulk TO-22 OBS 2000 TO-22 OBS Bulk TO-22 OBS 2000 TO-22 OBS Bulk TO-22 OBS 2000 TO-22 OBS Bulk TO-22 OBS 2000 TO-22 OBS Bulk TO-22 OBS 2000 TO-22 OBS Bulk TO-22 OBS 2000
(c) 2007 Sipex Corporation
SPX202 600 mA Low Dropout Linear Regulator
ORDeRing inFORMATiOn
continued
Part Number SPX202T SPX202T/TR SPX202T-2- SPX202T-2-/TR SPX202T-3-0 SPX202T-3-0/TR SPX202T-3-3 SPX202T-3-3/TR SPX202T-L SPX202T-L/TR SPX202T-L-2- SPX202T-L-2-/TR SPX202T-L-3-0 SPX202T-L-3-0/TR SPX202T-L-3-3 SPX202T-L-3-3/TR SPX202U SPX202U-2- SPX202U-3-0 SPX202U-3-3 SPX202U-L SPX202U-L-2- SPX202U-L-3-0 SPX202U-L-3-3
Package Code 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
RoHS StaPack tus Quantity OBS Bulk OBS 2000 OBS Bulk OBS 00 OBS Bulk OBS 00 EOL Bulk OBS 00 OBS Bulk OBS 00 OBS Bulk OBS 00 OBS Bulk OBS 00 OBS Bulk OBS 00 EOL Bulk OBS Bulk OBS Bulk EOL Bulk OBS Bulk OBS Bulk OBS Bulk OBS Bulk
Solved by
Sipex corporation
TM
Solved by Sipex
tm
Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 03 TEL: (0) 3-700 FAX: (0) 3-7600
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. Mar3-07 SPX202 600 mA Low Dropout Linear Regulator (c) 2007 Sipex Corporation
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