Datasheet SPX2931 Datasheet (Sipex)

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®

100mA Low Dropout Voltage Regulator

FEATURES

■ 3.3V and 3.5V Versions

■ Output Current in Excess of 100 mA

■ Input-Output Differential is 0.3 at 100mA

■ Mirror-Image Insertion Protection

■ Internal Thermal Protection

■ Available in TO-92 and SOT-89 Packages

■ Improved Version of the Industry Standard LM2931

■ Reverse Battery, Internal Short Circuit, 20V Reverse Transient and 60V Load Dump Protection

■ Availiable with either 2% or 3% Output Accurancy at 25°C

SPX2931

TO-92 (N)

132

V

OUT

GND

Bottom View

V

IN

Now Available in Lead Free Packaging

APPLICATIONS

■ Portable Instrumentation

■ Cordless Telephones

■ Radio Control Systems

SOT-89 (M1)

1

2

V

GND

IN

Top View

3

V

OUT

DESCRIPTION

The SPX2931 is a low power, positive voltage regulator. This device is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX2931 features offers very low quiescent currents (0.4 mA), and very low drop output voltage (50 mV at light load and 300 mV at 100 mA). The SPX2931 is offered in a 3-pin TO-92, and SOT-89 package.

TYPICAL APPLICATIONS CIRCUIT

V

IN

V

OUT

SPX2931

1µF

C

1

Gnd

1

100µF,

ESR 0.05 to 0.6 ohms

ABSOLUTE MAXIMUM RATINGS

Power Dissipation (note 3) ........................................ Internally limited

Lead Temp (soldering, 5 seconds) ............................................ 260°C

Storage Temperature Range ..................................... -65°C to +150°C

Input Supply Voltage Range .............................................-0.3 to +30V

ESD Rating (note 4) ...................................................................... 2kV

RECOMMENDED OPERATING CONSITIONS

Input Voltage Range ........................................................... 3.0 to 26V

Operating Junction Temperature Range ..................... -40°C to 125°C

TO-92Θ

............................................................................... 160°C/W

JA

SOT-89Θ

............................................................................ 110°C/W

JA

ELECTRICAL CHARACTERISTICS

at VIN=6V, TA = 25°C, IO = 10 mA, C

PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

3.3V Version

Output Voltage (Note 2) 4V < VIN <26V, 3.234 3.300 3.366 3.201 3.300 3.399

IO = 100 mA over temp. V

3.5V Version

Output Voltage (Note 2) 4.5V < VIN < 26V, 3.430 3.500 3.570 3.395 3.500 3.605

IO = 100mA Over Temp. V

All Voltage Options

Long Term Stability 20 20 mV/1000hr

Line Regulation 9V<VIN<16V, 2.0 10 4.0 30 mV

4.5V<V

Load Regulation 5mA<IO< 150mA 14 50 14 50 mV

Dropout Voltage IO =10mA 0.05 0.2 0.05 0.2

IO =150mA 0.3 0.6 0.3 0.6 V

Quiescent Current IO =10mA, 4.5V<VIN<26V 0.4 1.0 0.4 1.0

-40°C<Tj<85°C15 15mA IO =150mA, VIN=14V, TJ =25°C

Output Noise Voltage 10Hz-100kHz, C

Ripple Rejection FO =120Hz 80 80 dB

Maximum Operational Input Voltage 26 26 V

Maximum Line Transient RL = 500Ω, 100ms 60 70 50 70 V

Reverse Polarity Input VO> -0.3V, RL= 500Ω -15 -30 -15 -30 V Voltage, DC

Reverse Polarity Input 1% Duty Cycle, τ <100ms -50 -80 -50 -80 V Voltage, Transient RL=500Ω

NOTES: Note 1: See TYPICAL APLICATIONS notes to ensure constant junction temperature, low duty cycle pulse testing used. Note 2: All limits are at 25°C or over the full operationg junction temperature range of -40°C to +125°C. Note 3: The maximum power dissipation is a function of maximum junction temperature, total thermal resistance, and ambient temperature. Note 4: Human body model, 100pF discharged through 1.5kΩ.

= 100 µF, unless otherwise specified. (Note 1)

OUT

3.201 3.300 3.399 3.135 3.300 3.465

3.395 3.500 3.605 3.325 3.500 3.675

26V 4.0 30

IN<

=100µF 500 500 µV

OUT

RMS

2

TYPICAL PERFORMANCE CHARACTERISTICS

25

20

IO= 100mA

30

= 14V

V

IN

25

15

20

10

~ ~

6

4

QUIESCENT CURRENT (mA)

2

0

-40

0

JUNCTION TEMPERATURE (°C)

40

= 50mA

I

O

I

= 0mA

O

80 120

~ ~

15

10

QUIESCENT CURRENT (mA)

5

0

30

OUTPUT CURRENT (mA)

Figure 1. Quiescent Current Figure 2. Quiescent Current

0.6

0.5

0.4

0.3

0.2

0.1

INPUT OUTPUT DIFFERENTIAL (V)

0

40

JUNCTION TEMPERATURE (ºC)

= 100mA

I

O

I

= 50mA

O

= 10mA

I

O

80

120

0.6

0.5

0.4

0.3

0.2

0.1

INPUT OUTPUT DIFFERENTIAL (V)

0

OUTPUT CURRENT (mA)

60

50

90

100

Figure 3. Dropout Voltage Figure 4. Dropout Voltage

800

500

400

300

200

OUTPUT CURRENT (mA)

100

0

T

= 25ºC

J

= 85ºC

T

J

= -40ºC

T

J

10

INPUT VOLTAGE (V)

20

30

6.0

5.0

4.0

3.0

OUTPUT VOLTAGE (V)

2.0

1.0

SPX2931 3.5 IO= 100 mA

2.0 3.0

INPUT VOLTAGE (V)

4.0

5.0 6.0

Figure 5. Peak Output Current Figure 6. Low Voltage Behavior

3

TYPICAL PERFORMANCE CHARACTERISTICS

1.0

2.0

1.6

1.2

0.8

POWER DISSIPATION (W)

0.4

0.0

010

30

20

AMBIENT TEMPERATURE (ºC)

50

40

80

60 90

70

Figure 7. Maximum Power Dissipation (SOT89) Figure 8. Maximum Power Dissipation (TO-92)

0.9

0.8

0.7

0.6

0.5

0.4

0.3

POWER DISSIPATION (W)

0.2

0.1

0

0.4" LENGTH

FROM PC BOARD

0

30

10

20 40

AMBIENT TEMPERATURE (ºC)

0.125" LEAD LENGTH FROM PC BOARD

60

50

708090

OUTPUT IMPEDANCE (Ω)

0.1

0.01

10

LM2931-

5.0

I

= 10mA

O

1

0

30 60 90

FREQUENCY (Hz)

120

150

OUTPUT

OPERATION DURING LOAD DUMP

70 60 50 40 30

VOLTAGE (V)

20 10

0

~ ~

6 4

2 0

VOLTAGE (V)

-2

-100

0

TIME (ms)

C R

= 100µF

O

= 500

L

Ω

300

Figure 9. Output Impedance Figure 10. Operation During Load Dump

APPLICATION INFORMATION

The SPX2931 requires an output capacitor for device stability. The value required varies greatly depending upon the application circuit and other factors. The high frequency characteristics of electrolytic capacitors depend greatly on the type and also on the manufacturer. Sometimes bench testing is the only means to determine the proper capacitor type and value. The high quality 100°F aluminum electrolytic covers all general application circuits, this stability can be obtained with a tantalum electrolytic value of 47°F.

Another critical point of electrolytic characteristics is its performance over temperature. The SPX2931 is designed to operate starting at 40°C which may not be true in the case of electrolytic. Higher temperatures generally no problem. The electrolytic. type in aluminum will freeze around -30°C. This could cause an oscillation at output of regulator. At a lower temperature requirement by many applications the capacitor should maintain its performance. So as a result, for an application which regulator junction temperature does not exceed 25°C, the output capacitor can be reduced by the factor of two over the value needed for the entire temperature range.

~ ~

500

400200100

4

TYPICAL PERFORMANCE CHARACTERISTICS

In most applications the SPX2931 is operating at few milliamps. In these applications the output capacitance can be further reduced. For example, when the regulator is running at 10mA output current the output capacitance value is half compared to the same regulator that is running at 100 mA. The value decreases with higher output voltages, since the internal loop gain is reduced.

The worst case occurs at the lower temperature and maximum operating currents, the entire circuit and the electrolytic, should be cooled down to the minimum temperature. The minimum of 0.6 volts required at the input of regulator above the output to keep the power dissipation and die heating to its minimum. After the value for the capacitor has been determined for actual use, the value should be doubled.

PACKAGE PINOUTS

TO-92 (N)

132

V

OUT

GND

Bottom View

V

IN

SOT-89 (M1)

1

2

V

GND

IN

Top View

3

V

OUT

5

PACKAGE: 3PIN TO-92

L

e

e1

W

D

A

b

S1

DIMENSIONS

3 PIN TO-92

SYMBOL MIN NOM MAX

A b E e

e1 L R

S1

W D

a

IN

INCHES

.195

-

.170

.014

- .020

-

.130 .095

.045 .055

.500

.085

.045 .060 .016

.175

4º

.155

-

.105

-

.610

-

.095

-

0.022

-

.195

-

6º

R

E

a(2x)

3 PIN TO-92

6

PACKAGE: 3PIN SOT-89

D

3

D1

1

e

e1

3 PIN SOT-89

A

b

L

b1

C

D

D1

H

E

e

e1

Ø1.0

2

Dimensions in (mm)

MIN NOM MAX

1.40 1.50 1.60

0.36 0.42 0.48

0.80 - 1.20

0.41 0.47 0.53

0.38 0.40 0.43

4.40 4.50 4.60

1.40 1.60 1.75

3.94 - 4.25

2.40 2.50 2.60

1.45 1.50 1.55

2.90 3.00 3.10

E

H

5º(2x)

L

C

8º(2x)

Ro.15

bb1

b

3 PIN SOT-89

7

ORDERING INFORMATION

PART NUMBER ACC. OUTPUT VOLTAGE PACKAGE

SPX2931AM1-3.3 2% 3.3V 3 lead SOT-89

SPX2931AM1-3.3/TR 2% 3.3V 3 lead SOT-89

SPX2931AM1-3.5 2% 3.5V 3 lead SOT-89

SPX2931AM1-3.5/TR 2% 3.5V 3 lead SOT-89

SPX2931AN-3.3 2% 3.3V 3 lead TO-92

SPX2931AN-3.3/TR 2% 3.3V 3 lead TO-92

SPX2931AN-3.5 2% 3.5V 3 lead TO-92

SPX2931AN-3.5/TR 2% 3.5V 3 lead TO-92

SPX2931M1-3.3 3% 3.3V 3 Lead SOT-89

SPX2931M1-3.3/TR 3% 3.3V 3 Lead SOT-89

SPX2931M1-3.5 3% 3.5V 3 Lead SOT-89

SPX2931M1-3.5/TR 3% 3.5V 3 Lead SOT-89

SPX2931N-3.3 3% 3.3V 3 Lead TO-92

SPX2931N-3.3/TR 3% 3.3V 3 Lead TO-92

SPX2931N-3.5 3% 3.5V 3 Lead TO-92

SPX2931N-3.5/TR 3% 3.5V 3 Lead TO-92

Available in lead free packaging. To order add "-L" suffix to part number.

Example: SPX2931AN-3.3/TR = standard; SPX2931AN-L-3.3/TR = lead free

/TR = Tape and Reel

Pack quantity is 2,000 for TO-92 and 2,500 for SOT-89.

Corporation

ANALOG EXCELLENCE

Sipex Corporation

Headquarters and Sales Office

233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600

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 rights nor the rights of others.

8

Datasheet SPX2931 Datasheet (Sipex)

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