Sipex Corporation SPX2810AM3, SPX2810AM3-1.5, SPX2810AM3-2.5, SPX2810AM3-3.0, SPX2810AM3-3.3 Datasheet

Rev. 10/30/00

SPX2810

1A Low Dropout Voltage Regulator

Adjustable & Fixed Output,

Fast Response

FEATURES

APPLICATIONS

•

Adjustable Output Down To 1.2V

•

Portable Palmtop/Notebook Computer

•

Fixed Output Voltages 1.5V, 2.5V, 3.0V, 3.3V, 5.0V

•

SMPS Post-Regulator

•

Output Current Of 1A

•

Disk Drives

•

Low Dropout Voltage 1.2V Typ.

•

Portable Consumer Equipment

•

Extremely Tight Load And Line Regulation

•

Portable Instrumentation

•

Current & Thermal Limiting

•

Battery charger

•

Standard 3-Terminal Low Cost TO-220, TO-263, TO-252 & SOT-223

PRODUCT DESCRIPTION

The SPX2810 is a low power positive voltage regulator designed to source 1A output current. This device is an excellent choice for use in battery-powered applications and portable computers. The SPX2810 features very low quiescent current and very low dropout voltage of 1.2V at a full load and lower as output current decreases. This product is available as adjustable or fixed 1.5V, 2.5V, 3.0V,

3.3V, and 5V output voltages.

The SPX2810 is offered in a 3-pin surface mount packages SOT-223, TO-220, TO-252 & DD package. The output capacitor of 10µF or larger is needed for the output stability of SPX2810 as required by most other regulator circuits

PIN CONNECTIONS

Front View

TO-220-3 (U)

SPX2810

1

23

ADJ/GND

V

OUT

V

IN

Top View

TO-263-3 (T)

1

SPX2810

2

3

ADJ/GND

V

OUT

V

IN

Front View

TO-252 (R)

ADJ/GND VINV

OUT

3

2

1

SPX2810

Top View

SOT-223 (M3)

ADJ/ GND

V

OUT

V

IN

SPX2810

132

Rev. 10/30/00

SPX2810

ABSOLUTE MAXIMUM RATINGS

Lead Temp. (Soldering, 10 Seconds) ..............................300°C Input Voltage........................................................ 10V

Storage Temperature Range ............................ -65° to +150°C Input to Output Voltage Differential .................... 10V

Operating Junction Temperature Range ......................

SPX2810 Control Section.......................... -45°C +125°C

SPX2810 Power Transistor.........................-45°C +150°C

ELECTRICAL CHARACTERISTICS

(NOTE 1) at I

OUT

= 10mA, TA=25°C, unless otherwise specified.

PARAMETER CONDITIONS Typ SPX2810A SPX2810 UNITS

Min Max Min Max

1.5V Version

1.485 1.515 1.470 1.530 Output Voltage (Note 2) SPX2810-1.5V, 0 < I

OUT

< 1A, 3.3V<VIN<10V 1.5

1.47 1.53 1.455 1.545

V

2.5V Version

2.475 2.525 2.450 2.550 Output Voltage (Note 2) SPX2810-2.5V, 0 < I

OUT

< 1A, 4.0V<VIN<10V 2.5

2.45 2.55 2.425 2.575

V

2.85V Version

2.822 2.879 2.793 2.907 Output Voltage (Note 2)

SPX2810-2.85V, 0 ≤ I

OUT

≤ 1A,

4.5V≤V

IN

≤

10V

2.85

2.793 2.907 2.650 2.936

V

3.0V Version

2.970 3.030 2.94 3.06 Output Voltage (Note 2)

SPX2810-3.0V, 0 ≤ I

OUT

≤ 1A, 4.5V≤V

IN

≤

10V

3

2.940 3.060 2.79 3.09

V

3.3V Version

3.267 3.333 3.234 3.366 Output Voltage (Note 2)

SPX2810-3.3V, 0 ≤ I

OUT

≤ 1A, 4.8V≤V

IN

≤

10V

3.3

3.234 3.366 3.069 3.399

V

5.0V Version

4.950 5.050 4.9 5.1 Output Voltage (Note 2)

SPX2810-5.0V, 0 ≤ I

OUT

≤ 1A, 6.5V≤V

IN

≤

12V

5

4.900 5.100 4.65 5.15

V

All Voltage Options

1.250 Reference Voltage (V

REF

)

V

IN

≤

7V, P≤ Pmax

1.5V≤ (V

IN

-V

OUT

)≤5.75V, 10mA≤I

OUT

≤

1A

1.225

1.263

1.270

1.225

1.212

1.270

1.288

V

Min. Load Current (Note 3)

1.5V≤ (V

IN

–V

OUT

)≤5.75V

5 10 10

mA

Line Regulation (∆V

REF(Vin

)) 2.75V≤VIN ≤7V, I

OUT

=10mA, TJ=25ºC (Note 3)

0.005 0.2 0.2

V

IN

≤

7V, I

OUT

=0mA, TJ=25ºC (Note 2)

0.005 0.2 0.2

%

10mA≤I

OUT

≤1A, (VIN-V

OUT

)=3V, TJ=25ºC

(Note 3)

0.05 0.3 0.3

Load Regulation(∆V

REF(IOUT

))

0≤I

OUT

≤1A, VIN=7V, TJ=25ºC (Note 2)

0.05 0.3 0.3

%

Dropout Voltage

∆

V

REF

=1% I

OUT

= 1A (Note 3)

I

OUT

≤ 1A (Note 2)

1.1 1.2 1.2

VIN=7V Current Limit

I

OUT

(MAX)

1.4V ≤ (V

IN

- V

OUT

) (Note3)

2 1.2 1.2 A

Rev. 10/30/00

SPX2810

ELECTRICAL CHARACTERISTICS (Cont.)

Long Term Stability T

A

=125ºC, 1000 Hrs. 0.3

(Note 2)

1 1 %

Thermal Regulation (∆V

OUT

(Pwr))

T

A

=25ºC, 20 ms pulse 0.01 0.020 0.020 %/W

Temperature Stability (∆V

OUT

(T))

0.25 %

Output Noise, RMS 10Hz to 10kHz TA=25ºC 0.003 % Vo

3.0 3.0 TO-220 Junction to Tab

Junction to Ambient

60 60

3.0 3.0 DD Package Junction to Tab

Junction to Ambient

60 60

15 15

Thermal Resistance

SOT-223 Package Junction to Tab Junction to Ambient

156 156

The Bold specifications apply to the full operating temperature range. Note 1: Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Note 2: Fixed Version Only Note 3: Adjustable Version Only

ºC/W