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

■

Available Packages: SOT-223,TO-252,

TO-220, and TO-263

Now Available in Lead Free Packaging

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

Date: 8/25/04 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 = 10mA, V IN =3.0V, T J = 25ºC

1.485

1.500

1.515

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

1.470

1.530

1.8V Version

Output Voltage

I OUT = 10mA, V IN =3.3V, T J = 25ºC

1.782

1.800

1.818

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

1.764

1.836

2.5V Version

Output Voltage

I OUT = 10mA, V IN =4.0V, T J = 25ºC

2.475

2.500

2.525

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

2.450

2.550

2.85V Version

Output Voltage

I OUT = 10mA, V IN =4.35V, T J = 25ºC

2.821

2.850

2.878

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

2.793

2.907

3.00V Version

Output Voltage

I OUT = 10mA, V IN =4.5V, T J = 25ºC

2.970

3.000

3.030

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

2.940

3.060

3.30V Version

Output Voltage

I OUT = 10mA, V IN =4.8V, T J = 25ºC

3.267

3.300

3.333

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

3.234

3.366

5V Version

Output Voltage I OUT = 10mA, V IN =6.5V

4.950

5.050

10mA ≤ I OUT ≤ 800mA, 6.4V ≤ V IN ≤ 12V

4.90

5.10

All Voltage Options

Reference Voltage

I OUT =10mA, (V IN - V OUT )= 2V, T J = 25ºC

1.238

1.250

1.262

10mA≤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 =10mA

Load Regulation

10mA≤I OUT ≤ 800mA,V OUT =Fixed/Adj

(Note 1)

Dropout Voltage

I OUT =100mA

1.00

1.10

(Note 2)

I OUT =500mA

1.05

1.15

I OUT =800mA

1.10

1.20

Quiescent Current

4.25V≤V IN ≤ 6.5V

Date: 8/25/04 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

Thermal Resistance

TO-220 Junction to Case, at Tab

°C/W

TO-220 Junction to Ambient

TO-263 Junction to Case, at Tab

TO-263 Junction to Ambient

TO-252 Junction to Case, at Tab

TO-252 Junction to Ambient

126

SOT-223 Junction to Case, at Tab

SOT-223 Junction to Ambient

156

*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

Date: 8/25/04 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

Output Current (mA)

Vin (V)

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

-50

-25

100

125

Io (mA)

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

-50 -30 -10

90 110 130

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Time (ms)

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

Date: 8/25/04 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

Date: 8/25/04 SPX1117 800mA Low Dropout Voltage Regulator

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