SPX1117.pdf

SPX1117

800mA Low Dropout Voltage Regulator

FEATURES

■

Guaranteed 0.8A Output Current

APPLICATIONS

■

Desktop PC's Servers

■

Guaranteed 1A Peak Current

■

SCSI-II Active Terminator

■

Three Terminal Adjustable or Fixed

1.5V, 1.8V, 2.5V, 2.85V, 3.0V,

3.3V and 5V

■

Portable/ Palm Top / Notebook

Computers

■

Cordless Phones

■

Low Quiescent Current

■

Battery Chargers

■

Low Dropout Voltage of 1.1V at 0.8A

■

Disk Drives

■

0.1% Line and 0.2% Load Regulation

■

Portable Consumer Equipment

■

Stable with 2.2uF Ceramic Capacitor

■

Portable Instrumentation

■

Overcurrent and Thermal Protection

■

SMPS Post-Regulator

■

Lead Free, RoHS Compliant Packages:

SOT-223,TO-252, TO-220, and TO-263

DESCRIPTION

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 10 µ F provides unconditional stability while a smaller 2.2 µ F

capacitor is sufficient for most applications.

FUNCTIONAL DIAGRAM

V IN

Current Limit

V OUT

I CL

AMP

1.25V

Thermal Limit

V REF

–

ADJ/GND

I TL

I ADJ ~ 50 µ A

Apr 20-07 Rev B SPX1117 800mA Low Dropout Voltage Regulator

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

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.

ELECTRICAL CHARACTERISTICS

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

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

1.5V Version

Output Voltage

I OUT = 5mA, V IN =3.0V, T J = 25ºC

1.485

1.500

1.515

5mA ≤ I OUT ≤ 800mA, 2.9V ≤ V IN ≤ 10V

1.470

1.530

1.8V Version

Output Voltage

I OUT = 5mA, V IN =3.3V, T J = 25ºC

1.782

1.800

1.818

5mA ≤ I OUT ≤ 800mA, 3.2V ≤ V IN ≤ 10V

1.764

1.836

2.5V Version

Output Voltage

I OUT = 5mA, V IN =4.0V, T J = 25ºC

2.475

2.500

2.525

5mA ≤ I OUT ≤ 800mA, 3.9V ≤ V IN ≤ 10V

2.450

2.550

2.85V Version

Output Voltage

I OUT = 5mA, V IN =4.35V, T J = 25ºC

2.821

2.850

2.878

5mA ≤ I OUT ≤ 800mA, 4.25V ≤ V IN ≤ 10V

2.793

2.907

3.00V Version

Output Voltage

I OUT = 5mA, V IN =4.5V, T J = 25ºC

2.970

3.000

3.030

5mA ≤ I OUT ≤ 800mA, 4.4V ≤ V IN ≤ 10V

2.940

3.060

3.30V Version

Output Voltage

I OUT = 5mA, V IN =4.8V, T J = 25ºC

3.267

3.300

3.333

5mA ≤ I OUT ≤ 800mA, 4.7V ≤ V IN ≤ 10V

3.234

3.366

5V Version

Output Voltage I OUT = 5mA, V IN =6.5V

4.950

5.050

5mA ≤ I OUT ≤ 800mA, 6.4V ≤ V IN ≤ 12V

4.90

5.10

All Voltage Options

Reference Voltage

I OUT =5mA, (V IN - V OUT )= 2V, T J = 25ºC

1.238

1.250

1.262

5mA≤I OUT ≤ 800mA, 1.4V≤(V IN -V OUT )≤ 10V

1.225

1.270

Output Voltage

0.3

Temperature Stability

Line Regulation

V INMIN ≤V IN ≤ 12V,V OUT =Fixed/Adj,

(Note 1)

I OUT =5mA

Load Regulation

5mA≤I OUT ≤ 800mA,V OUT =Fixed/Adj

(Note 1)

Dropout Voltage

I OUT =100mA

1.00

1.20

(Note 2)

I OUT =500mA

1.05

1.25

I OUT =800mA

1.10

1.30

Quiescent Current

4.25V≤V IN ≤ 6.5V

Apr 20-07 Rev B SPX1117 800mA Low Dropout Voltage Regulator

ELECTRICAL CHARACTERISTICS

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

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Adjust Pin Current

120

µA

Current Limit

(V IN -V OUT )=5V

1.0

1.5

2.0

Thermal Regulation

25°C, 30mS pulse

0.01

0.1

%/W

Ripple Rejection

f RIPPLE =120Hz, (V IN -V OUT )=2V,

V RIPPLE =1V PP

Long Term Stability

125°C, 1000Hrs

0.03

RMS Output Noise

% of V OUT , 10Hz≤f≤10kHz

0.003

*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

Apr 20-07 Rev B SPX1117 800mA Low Dropout Voltage Regulator

TYPICAL PERFORMANCE CHARACTERISTICS

3.320

3.325

3.315

3.310

3.320

3.305

3.315

3.300

3.295

3.310

3.290

3.305

3.285

3.280

3.300

100

1000

4.5

6.5

8.5

10.5 12.5 14.5

Vin (V)

Output Current (mA)

Figure 1. Load Regulation for SPX1117M3-3.3;

Figure 2. Line Regulation for SPX1117M3-3.3;

V IN =4.8V

I OUT =10mA

1.3

2.00

1.2

1.50

1.1

1.00

1.0

0.50

0.9

0.00

100 200 300 400 500 600 700 800 900 1000

Io (mA)

-50

-25

100

125

Temp ( o C)

Figure 3. Dropout Voltage vs Output Current for

SPX1117M3-3.3; V IN =4.8V, C OUT =2.2 µ F

Figure 4. Current Limit for SP1117M3-3.3; V IN =4.8V,

C IN =C OUT =1 µ F, I OUT pulsed from 10mA to Current

Limit

125 ° C

22 µ F

1.275

100

1.27

1.265

1.25v Adj

1.26

Indicating Current

Limit Starts

-100

1.255

1.5

1.25

1.245

1.0

1.24

V IN = 4.0V

V IN =3.3V Fixed

1 O =10mA

C IN =1 µ F Tan Cap

C OUT =2.2 µ F Tan Cap

0.5

1.235

1.23

1.225

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Time (ms)

-50 -30 -10 10 30 50 70 90 110 130

Temp (C)

Figure 5. Current Limit for SPX1117M3-3.3, Output

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

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

Apr 20-07 Rev B SPX1117 800mA Low Dropout Voltage Regulator

TYPICAL PERFORMANCE CHARACTERISTICS: Continued

1.53

1.84

1.52

1.5v Adj

1.5v Fixed

1.83

1.8v Adj

1.8v Fixed

1.82

1.51

1.81

1.5

1.8

1.49

1.79

1.78

1.48

1.77

1.47

1.76

-50

-30

-10

110 130

-50

-30

-10

110 130

Temp (C)

Figure 7. V IN =3.0V, I OUT =10mA

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

2.55

2.92

2.54

2.5v Adj

2.5v Fixed

2.9

2.85v Adj

2.85v Fixed

2.53

2.52

2.88

2.51

2.5

2.86

2.49

2.84

2.48

2.47

2.82

2.46

2.45

2.8

-50

-30

-10

110

130

-50

-30

-10

110 130

Temp (C)

Figure 9. V IN =4.0V, I OUT =10mA

Figure 10. V IN =4.85V, I OUT =10mA

3.06

3.38

3.04

3v Adj

3v Fixed

3.36

3.3v Adj

3.3v Fixed

3.02

3.34

3.32

2.98

3.3

2.96

3.28

2.94

3.26

-50

-30

-10

110

130

-50

-30

-10

110 130

Temp (C)

Figure 11. V IN =4.85V, I OUT =10mA

Figure 12. V IN =5.0V, I OUT =10mA

1.816

1.815

800mA

400mA

10mA

1.814

1.813

1.812

-2

1.811

-4

1.81

1.809

-6

1.808

-8

1.807

-40

-20

100

1.806

-40

-20

100

Ambient Temperature,*C

Ambient Temperature, *C

Figure 13. Line Regulation vs Temperature. V OUT =1.8V

(adjustable), V IN = 3.3V

Figure 14. Output Voltage vs Temperature at different

Current Loads, V IN =3.3V, V OUT = 1.8V Adjustable

0.4

0.3

-40 ° C

+25 ° C

+85 ° C

0.2

0.1

-0.1

-0.2

-0.3

Vin, V

Figure 15. Line Regulation at I LOAD =800mA over

Temperature, V OUT =1.8V adjustable

Apr 20-07 Rev B SPX1117 800mA Low Dropout Voltage Regulator

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