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
degrade
■  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
Internally Limited Lead Temperature (soldering, 5 seconds)    ...............260°C Storage .-65°C to +150°C Operating Junction -40°C to +125°C Input Supply Voltage . (20)
Input to Output Voltage ................................................ 18.8V
....................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

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