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SPX1117HM3-3-3中文资料

800mA Low Dropout Voltage Regulator

DESCRIPTION

FEATURES

■ Guaranteed 0.8A Output Current ■ Guaranteed 1A Peak Current

■ Three Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V and 5V

■ Low Quiescent Current

■ Low Dropout Voltage of 1.1V at 0.8A ■ 0.1% Line and 0.2% Load Regulation ■ Stable with 2.2uF Ceramic Capacitor ■ Overcurrent and Thermal Protection ■ Lead Free, RoHS Compliant Packages: SOT-223,TO-252, TO-220, and TO-263

The SPX1117 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 SPX1117 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. SPX1117 is available in adjustable or fixed 1.5V, 1.8V, 2.5V,2.5V, 2.85V, 3.0V, 3.3V and 5V output voltages.

The SPX1117 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.

APPLICATIONS

■ Desktop PC's Servers ■ SCSI-II Active Terminator

■ Portable/ Palm Top / Notebook Computers

■ Cordless Phones ■ Battery Chargers ■ Disk Drives

■ Portable Consumer Equipment ■ Portable Instrumentation ■ SMPS Post-Regulator

FUNCTIONAL DIAGRAM

OUT

IN

μA

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 . (20)

Input to Output Voltage ................................................ 18.8V ESD Rating.................................................................2kV min These are sterss ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

T

A = 25°C, C

IN

= C

OUT

= 10μF, unless otherwise specified. The Boldface applies over the full operating temperature range.

*Note 1 - For fixed option, V INMIN = V OUT + 1.5V

- For adjustable option, V INMIN = V IN - V OUT = 1.4V

*Note 2 - Dropout voltage is the input voltage minus output voltage that produces a 1% decrease in output voltage with respect to the nominal output voltage at V IN = V OUT + 1.5V

ELECTRICAL CHARACTERISTICS

T A = 25°C, C IN = C OUT = 10μF, unless otherwise specified. The Boldface applies over the full operating temperature range.

TYPICAL PERFORMANCE CHARACTERISTICS

Figure 1. Load Regulation for SPX1117M3-3.3;Figure 2. Line Regulation for SPX1117M3-3.3; V IN =4.8V I OUT =10mA

Figure 3. Dropout Voltage vs Output Current for SPX1117M3-3.3; V IN =4.8V, C OUT =2.2μF

Voltage Deviation with I OUT =10mA to 1A Step

Figure 6. V OUT vs Temperature, V IN =2.5V, I OUT =10mA

IN C IN =C OUT =1μF, I OUT pulsed from 10mA to Current Limit

IN OUT

IN OUT

IN OUT TYPICAL PERFORMANCE CHARACTERISTICS: Continued

Figure 8. V IN =3.3V, I OUT =10mA

IN OUT IN OUT Figure 14. Output Voltage vs Temperature at different Current Loads, V IN =3.3V, V OUT = 1.8V Adjustable

Figure 13. Line Regulation vs Temperature. V OUT =1.8V (adjustable), V IN = 3.3V

Figure 15. Line Regulation at I LOAD =800mA over Temperature, V OUT =1.8V adjustable

Output Capacitor

To ensure the stability of the SPX1117, an

output capacitor of at least 2.2μ

F (tantalum or

ceramic) or 10

μF (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 to guarantee stability. The recommended value for ESR is 0.5? or less. A larger value of output capacitance (up to 100μF) can improve the load transient response.

Soldering Methods

The SPX1117 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 SPX1117 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 65°C of the soldering temperature range.

Figure 16. Load Step Response (0 to 800mA), Vin=3.3V, Vout=1.8V, Cin=10μF, Cout=2.2μF, Ceramic; 1 = Vout, 4= Iload

Figure 17. Load Step Response (0 to 800mA), Vin=3.3V, Vout=1.8V, Cin=10μF, Cout=2.2μF, OSCON; 1 = Vout, 4= Iload

APPLICATION INFORMATION

Thermal Characteristics

The thermal resistance of SPX1117 (SOT-223 Package) 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 (Table 1). The SPX1117 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 tem-perature does not exceed 125 °C. Thermal pro-tection is activated at >155°C and deactiviated at <140 °C.

Taking the FR-4 printed circuit board and 1/16 thick with 1 ounce copper foil as an experiment (fig.13), the PCB material is effective at trans-mitting 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 resis-tance of the SPX1117. The actual thermal resistance can be determined with experimenta-tion.

SPX1117 power dissipation is calculated as follows:

P D = (V IN - V OUT )(I OUT )

Maximum Junction Temperature range:

T J = T A (max) + P D * 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 23. When ADJ pin bypassing is used, the value of the output capacitor re-quired 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 alu-minum capacitor or 2.2μF for a ceramic or solid tantalum capacitor (Fig 22).

However the value of the ADJ-bypass capacitor should be chosen with respect to the following equation:

C = 1 / ( 6.28 * F R * R 1 )

Where

C = value of the capacitor in Farads (select an equal or larger standard value), F R = ripple frequency in Hz,

R 1 = value of resistor R1 in Ohms.If an ADJ-bypass capacitor is used, the ampli-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 = V OUT / V REF Where M = multiplier for the ripple seen when the ADJ pin is optimally bypassed.

V REF =1.25V

Ripple rejection for the adjustable version is shown in Figure 20.

Figure 19. Substrate Layout for SOT-223

Figure 20. Ripple Rejection; Vin=3.3V, Vout=1.8V (adj.), Iload=200mA

APPLICATION INFORMATION: Continued

Output Voltage

The output of the adjustable regulator can be set to any voltage between 1.25V and 15V. The value of V OUT can be quickly approximated using the formula

V OUT =1.25 *(R 1 + R 2)/R 1.

A small correction to this formula is required depending on the values of resistors R 1 and R 2, since the adjustable pin current (approx 50μA) flows through R 2. When I ADJ is taken into ac-count, the formula becomes

V OUT = V REF (1+ (R 2/R 1)) + I ADJ * R 2,where

V REF =1.25V.

Layout Considerations

Parasitic line resistance can degrade load regu-lation. In order to avoid this, connect R 1 directly to V OUT as illustrated in Figure 25. For the same reason, R 2 should be connected to the negative side of the load.

Figure 21. Current Source Figure 22. Typical Adjustable Regulator

APPLICATION INFORMATION: Continued

APPLICATION INFORMATION: Continued

PINOUTS SOT-223 (M3)

Top View

TO-263-3 (T)

Front View

TO-220-3 (U)

Front View

TO-252 (R)

ADJ/GND V

OUT

V

IN

ADJ/GND V

OUT

V

IN

ADJ/GND V

OUT

V

IN

ADJ/GND V

OUT

V

IN

Top View

Note: For all Pinouts, TAB is connected to Pin2 V OUT.

PACKAGE: 3 PIN SOT-223

PACKAGE: 3 PIN TO-252

PACKAGE: 3 PIN TO-220

PACKAGE: 3 PIN TO-263

Ordering Information

Part Number Status RoHS Package Pack Type Quantity SPX1117HM3/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117HM3-L/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117HM3-L-1-8/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117M3 Active No SOT-223-3 TUBE 78 SPX1117M3/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-1-5/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-1-8/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-2-5/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-2-85 Active No SOT-223-3 TUBE 78 SPX1117M3-3-0/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-3-3/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-5-0/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-L Active Yes SOT-223-3 TUBE 78 SPX1117M3-L/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117M3-L-1-5 Active Yes SOT-223-3 TUBE 78 SPX1117M3-L-1-5/TR Active No SOT-223-3 Tape & Reel 2500 SPX1117M3-L-1-8/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117M3-L-2-5/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117M3-L-2-85/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117M3-L-3-0 Active Yes SOT-223-3 TUBE 78 SPX1117M3-L-3-0/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117M3-L-3-3/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117M3-L-5-0/TR Active Yes SOT-223-3 Tape & Reel 2500 SPX1117R Active No TO-252-3 TUBE 77 SPX1117R/TR Active No TO-252-3 Tape & Reel 2000 SPX1117R-1-5 Active No TO-252-3 TUBE 77 SPX1117R-1-5/TR Active No TO-252-3 Tape & Reel 2000 SPX1117R-1-8 Active No TO-252-3 TUBE 77 SPX1117R-1-8/TR Active No TO-252-3 Tape & Reel 2000 SPX1117R-2-5 Active No TO-252-3 TUBE 77 SPX1117R-2-5/TR Active No TO-252-3 Tape & Reel 2000 SPX1117R-2-85 Active No TO-252-3 TUBE 77 SPX1117R-2-85/TR Active No TO-252-3 Tape & Reel 2000 SPX1117R-3-0 Active No TO-252-3 TUBE 77 SPX1117R-3-0/TR Active No TO-252-3 Tape & Reel 2000 SPX1117R-3-3 Active No TO-252-3 TUBE 77 SPX1117R-3-3/TR Active No TO-252-3 Tape & Reel 2000 SPX1117R-L Active Yes TO-252-3 TUBE 77 SPX1117R-L/TR Active Yes TO-252-3 Tape & Reel 2000 SPX1117R-L-1-5 Active Yes TO-252-3 TUBE 77 SPX1117R-L-1-5/TR Active Yes TO-252-3 Tape & Reel 2000 SPX1117R-L-1-8 Active Yes TO-252-3 TUBE 77 SPX1117R-L-1-8/TR Active Yes TO-252-3 Tape & Reel 2000 SPX1117R-L-2-5 Active Yes TO-252-3 TUBE 77 SPX1117R-L-2-5/TR Active Yes TO-252-3 Tape & Reel 2000 SPX1117R-L-2-85 Active Yes TO-252-3 TUBE 77 SPX1117R-L-2-85/TR Active Yes TO-252-3 Tape & Reel 2000 SPX1117R-L-3-0 Active Yes TO-252-3 TUBE 77 SPX1117R-L-3-0/TR Active Yes TO-252-3 Tape & Reel 2000 SPX1117R-L-3-3 Active Yes TO-252-3 TUBE 77 SPX1117R-L-3-3/TR Active Yes TO-252-3 Tape & Reel 2000

Ordering Information

Part Number Status RoHS Package Pack Type Quantity SPX1117T Active No TO-263-3 TUBE 50 SPX1117T/TR Active No TO-263-3 Tape & Reel 500 SPX1117T-1-5 Active No TO-263-3 TUBE 50 SPX1117T-1-5/TR Active No TO-263-3 Tape & Reel 500 SPX1117T-1-8 Active No TO-263-3 TUBE 50 SPX1117T-1-8/TR Active No TO-263-3 Tape & Reel 500 SPX1117T-2-5 Active No TO-263-3 TUBE 50 SPX1117T-2-5/TR Active No TO-263-3 Tape & Reel 500 SPX1117T-2-85 Active No TO-263-3 TUBE 50 SPX1117T-3-0 Active No TO-263-3 TUBE 50 SPX1117T-3-0/TR Active No TO-263-3 Tape & Reel 500 SPX1117T-3-3 Active No TO-263-3 TUBE 50 SPX1117T-3-3/TR Active No TO-263-3 Tape & Reel 500 SPX1117T-L Active Yes TO-263-3 TUBE 50 SPX1117T-L/TR Active Yes TO-263-3 Tape & Reel 500 SPX1117T-L-1-5 Active Yes TO-263-3 TUBE 50 SPX1117T-L-1-5/TR Active Yes TO-263-3 Tape & Reel 500 SPX1117T-L-1-8 Active Yes TO-263-3 TUBE 50 SPX1117T-L-1-8/TR Active Yes TO-263-3 Tape & Reel 500 SPX1117T-L-2-5 Active Yes TO-263-3 TUBE 50 SPX1117T-L-2-5/TR Active Yes TO-263-3 Tape & Reel 500 SPX1117T-L-2-85 Active Yes TO-263-3 TUBE 50 SPX1117T-L-2-85/TR Active Yes TO-263-3 Tape & Reel 50 SPX1117T-L-3-0 Active Yes TO-263-3 TUBE 50 SPX1117T-L-3-0/TR Active Yes TO-263-3 Tape & Reel 500 SPX1117T-L-3-3 Active Yes TO-263-3 TUBE 50 SPX1117T-L-3-3/TR Active Yes TO-263-3 Tape & Reel 500 SPX1117U Active No TO-220-3 TUBE 50 SPX1117U-1-5 Active No TO-220-3 TUBE 50 SPX1117U-1-8 Active No TO-220-3 TUBE 50 SPX1117U-2-5 Active No TO-220-3 TUBE 50 SPX1117U-2-85 Active No TO-220-3 TUBE 50 SPX1117U-3-0 Active No TO-220-3 TUBE 50 SPX1117U-3-3 Active No TO-220-3 TUBE 50 SPX1117U-L Active Yes TO-220-3 TUBE 50 SPX1117U-L-1-5 Active Yes TO-220-3 TUBE 50 SPX1117U-L-1-8 Active Yes TO-220-3 TUBE 50 SPX1117U-L-2-5 Active Yes TO-220-3 TUBE 50 SPX1117U-L-2-8-5 Active Yes TO-220-3 TUBE 50 SPX1117U-L-3-0 Active Yes TO-220-3 TUBE 50 SPX1117U-L-3-3 Active Yes TO-220-3 TUBE 50 SPX1117HM3 CF No SOT-223-3 TUBE 78

Ordering Information

Part Number Status RoHS Package Pack Type Quantity SPX1117HM3-1-5 CF No SOT-223-3 TUBE 78 SPX1117HM3-2-5 CF No SOT-223-3 TUBE 78 SPX1117HM3-3-3 CF No SOT-223-3 TUBE 78 SPX1117HM3-5-0 CF No SOT-223-3 TUBE 78 SPX1117HM3-L CF Yes SOT-223-3 TUBE 78

SPX1117HM3-L-1-5 CF Yes SOT-223-3

TUBE 78

SPX1117HM3-L-1-5/TR CF Yes SOT-223-3 Tape & Reel 2500 SPX1117HM3-L-1-8 CF Yes SOT-223-3 TUBE 78

SPX1117HM3-L-2-5 CF Yes SOT-223-3 TUBE 78

SPX1117HM3-L-2-5/TR CF Yes SOT-223-3 Tape & Reel 2500 SPX1117HM3-L-2-85 CF Yes SOT-223-3 TUBE 78

SPX1117HM3-L-2-85/TR CF Yes SOT-223-3 Tape & Reel 2500 SPX1117HM3-L-3-0 CF Yes SOT-223-3 TUBE 78

SPX1117HM3-L-3-0/TR CF Yes SOT-223-3 Tape & Reel 2500 SPX1117HM3-L-3-3 CF Yes SOT-223-3 TUBE 78

SPX1117HM3-L-3-3/TR CF Yes SOT-223-3 Tape & Reel 2500 SPX1117HM3-L-5-0 CF Yes SOT-223-3 TUBE 78

SPX1117HM3-L-5-0/TR CF Yes SOT-223-3 Tape & Reel 2500 SPX1117M3-1-5 CF_ No SOT-223-3 TUBE 78

SPX1117M3-1-8 CF_ No SOT-223-3 TUBE 78

SPX1117M3-2-5 CF_ No SOT-223-3 TUBE 78

SPX1117M3-3-0 CF_ No SOT-223-3 TUBE 78

SPX1117M3-3-3 CF_ No SOT-223-3 TUBE 78

SPX1117M3-5-0 CF_ No SOT-223-3 TUBE 78

SPX1117M3-L-1-8 CF_ Yes SOT-223-3 TUBE 78

SPX1117M3-L-2-5 CF_ Yes SOT-223-3 TUBE 78

SPX1117M3-L-2-85 CF_ Yes SOT-223-3 TUBE 78

SPX1117M3-L-3-3 CF_ Yes SOT-223-3 TUBE 78

SPX1117M3-L-5-0 CF_ Yes SOT-223-3 TUBE 78

SPX1117HM3-1-5/TR OBS No SOT-223-3 Tape & Reel 2500 SPX1117HM3-1-8 OBS No SOT-223-3 TUBE 78

SPX1117HM3-1-8/TR OBS No SOT-223-3 Tape & Reel 2500 SPX1117HM3-2-5/TR OBS No SOT-223-3 Tape & Reel 2500 SPX1117HM3-2-85 OBS No SOT-223-3 TUBE 78

SPX1117HM3-2-85/TR OBS No SOT-223-3 Tape & Reel 2500 SPX1117HM3-3-0 OBS No SOT-223-3 TUBE 78

SPX1117HM3-3-0/TR OBS No SOT-223-3 Tape & Reel 2500 SPX1117HM3-3-3/TR OBS No SOT-223-3 Tape & Reel 2500 SPX1117HM3-5-0/TR OBS No SOT-223-3 Tape & Reel 2500 TM

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Sipex Application Notes: https://www.sodocs.net/doc/423437003.html,/applicationNotes.aspx

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tel: (408) 934-7500

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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

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