SPX431BS-L/TR [SIPEX]

Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8;


型号：	SPX431BS-L/TR
厂家：	SIPEX CORPORATION
描述：	Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8 稳压器
文件：	总8页 (文件大小：161K)
中文：	中文翻译
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SPX431

Precision Adjustable Shunt Regulator

FEATURES

APPLICATIONS

• Battery Operating Equipments

• Adjustable Supplies

• Trimmed Bandgap to 0.5%

• Wide Operating Current..........................1mA to 150mA

• Extended Temperature Range....................0°C to 105°C

• Low Temperature Coefficient ............................30 ppm/°C

• Offered in TO-92, SOIC, SOT-89, SOT-23-5

• Improved Replacement in Performance for TL431

• Low Cost Solution

• Switching Power Supplies

• Error Amplifiers

• Single Supply Amplifier

• Monitors / VCR / TV

• Personal Computers

PRODUCT DESCRIPTION

The SPX431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate 0.5% bandgap reference. SPX431 acts as an

open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431 thermal stability, wide operating current

(150mA) and temperature range (0°C to 105°C) makes it suitable for all variety of application that are looking for a low cost solution

with high performance. SPX431 tolerance of 0.5% is proven to be sufficient to overcome all of the other errors in the system to

virtually eliminate the need for trimming in the power supply manufactures assembly line and contribute a significant cost

savings.

The output voltage may be adjusted to any value between V_REFand 36 volts with two external resistors. The SPX431 is operating an

extended temperature range of 0°C to 105°C. The SPX431 is available in TO-92, SO-8, SOT-89, and SOT-23-5 packages.

PIN CONFIGURATIONS

SOT-23-5 (M5)

SOT-89 (M1)

8-Pin Surface Mount (S)

TO-92 (N)

REF

ANODE

REF

CATHODE

ANODE

N/C

SPX431

ANODE

N/C

SPX431

CATHODE

REF

CATHODE

N/C

N/C CATHODE

ANODE

Top View

Bottom View

Top View

Rev. 10/30/00

SPX431

CATHODE (K)

REFERENCE

(R)

2.5V

ANODE (A)

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATING

UNITS

Cathode-Anode Reverse Breakdown

Anode-Cathode Forward Current

Operating Cathode Current

Reference Input Current

Continuous Power Dissipation at 25° C

TO-92

V_KA

I_AK

I_KA

I_REF

P_D

150

775

200

°C

SOT-23

750

8L SOIC

1000

150

SOT-89

Junction Temperature

Storage Temperature

Lead Temperature (Soldering 10 sec.)

T_J

T_STG

T_L

- 65 to 150

300

Stresses greater than those listed under ABSULUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect reliability.

RECOMMENDED CONDITIONS

TYPICAL THERMAL RESISTANCES

PARAMETER

Cathode Voltage

Cathode Current

SYMBOL RATING UNIT

PACKAGE

TO-92

0_JA

0_JC

TYPICAL DERATING

6.3 mW/°C

V_KA

I_K

V_REFto 20

160 °C/W

80 °C/W

SOT-23

575 °C/W 150 °C/W

1.7 mW/°C

SOIC

SOT-89

175 °C/W

110 °C/W

45 °C/W

8 °C/W

5.7 mW/°C

9.1 mW/°C

Rev. 10/30/00

SPX431

ELECTRICAL CHARACTERISTICS at 25°C I_K@ 10mA V_K= V_REF, unless otherwise specified.

Parameter

Symbol

Test Conditions Test Circuit

SPX431

Unit

Min

Typ

Max

Reference Voltage

V_REF

2.490

2.503

2.515

2.536

0.20

mV/°C

mV/V

T_A= 25°C

2.469

Over Temp.

∆ V_REF

∆V_K

0.07

-1.0

-0.4

∆V_REFwith Temp.∗

Ratio of Change in V_REFto

Cathode Voltage

Reference Input Current

I_REFTemp Deviation

Min I_Kfor Regulation

Off State Leakage

V_REFto 10V

10V to 36V

-2.7

-2

0.3

1.2

250

I_REF

0.7

µA

Over Temp.

V_REF= 0V,

0.4

∆I_REF

I_K(MIN)

I_K(OFF)

0.4

0.04

_KA= 36V

Dynamic Output Impedance

TC = Test Circuit

Z_KA

0.15

0.5

Ω

Calculating Average Temperature Coefficient (TC)

∆

V_REF(mV)

TC in mV/°C =

TC in %/°C =

TC in ppm/°C =

∆

T_A

∆

V_REF

)

∆Τ

∆

V_REF

x 100

)

V_REFat 25°C

-10

∆

T_A

5000 0.5

)

∆

V_REF

x 10⁶

)

V_REFat 25°C

-20

-55 -25

25 50 75 100 125

Temperature (°C)

0.06 mV/°C

∆

T_A

0.002 %/°C

24 ppm/°C

TEST CIRCUITS

V_IN

V_KA= V_REF

V_IN

V_KA

V_IN

V_KA

I_REF

I_K

I_{K (OFF)}

R₁

(V_REF

I_REF

)

R₂

1a. Test Circuit 1

1b. Test Circuit 2

1c. Test Circuit 3

Figure

Rev. 10/30/00

SPX431

TYPICAL PERFORMANCE CURVES

High Current Operating Characteristics

Low Current Operating Characteristics

150

125

100

900

V_KA= V_REF

V_KA= V

Temperature Range: -^R0^EF°C to 125 °C

800

Temperature Range: - 0°C to 105 °C

700

600

500

400

105 °C

25 °C

-0 °C

300

200

100

-25

-50

-75

-100

-200

-2

-1

-1.0

1.0

2.0

3.0

V_KA- Cathode Voltage (V)

Figure 3

V_KA- Cathode Voltage (V)

Figure 2

Off State Leakage

Reference Voltage vs. Ambient Temperature

100

2.53

V_KA= V_REF

I_K= 10 mA

V_KA= 36V

V_REF= 0V

2.52

2.51

2.50

2.49

2.48

2.47

2.46

2.45

_REF= 2.500 V at 25 °C

0.1

0.01

-60

-30

120

-60

-30

120

T_A- Ambient Temperature ( °C)

Figure 4

T_A- Ambient Temperature ( °C)

Figure 5

Rev. 10/30/00

SPX431

TYPICAL PERFORMANCE CURVES

Reference Voltage Line Regulation

Reference Input Current

3.0

-10

-20

-30

R1 = 10 k

R2 =

I_K= 10 mA

Ω

∞

2.5

2.0

1.5

1.0

0.5

0 °C

25 °C

75 °C

105 °C

-40

-50

-60

-30

120

T_A- Ambient Temperature ( °C)

Figure 6

V_KA- Cathode Voltage (V)

Figure 7

Low Frequency Dynamic Output Impedance

Noise Voltage

0.150

0.125

0.100

0.075

0.050

0.025

0.0

V_KA= V

REF

I_KA= 1 to 100 mA

f < 1 kHz

V_KA= V_REF

I_K= 10 mA

T_A= 25°C

-60

-30

120

100

1 k

10 k

100 k

T_A- Free Air Temperature

Figure 9

f - Frequency (Hz)

Figure 8

Rev. 10/30/00

SPX431

TYPICAL PERFORMANCE CURVES

Dynamic Output Impedance

100

= 25 °C

I_K^A= 1 to 100 mA

1.0

0.1

0.01

1 k

10 k

100 k

1 M

10 M

f - Frequency (Hz)

Figure 10

Small Signal Voltage Gain vs. Frequency

Temperature Range: -0°C to 105 °C

I_K= 10 mA

OUT

230

Ω

I_K

15 k

8.25 k

GND

1 k

10 k

100 k

1 M

10 M

f - Frequency (Hz)

Figure 11

Rev. 10/30/00

SPX431

TYPICAL PERFORMANCE CURVES

Pulse Response

INPUT

MONITOR

220

Ω

OUT

OUTPUT

Ω

f_P= 100 kHz

GND

-1

t - Time ( s)

Figure 12

Stability Boundary Conditions

100

A: V_KA= V_REF

B: V = 5V at I = 10 mA

C: V^KA= 10V at ^KI = 10 mA

D: V^KA= 15V at I _K^K= 10 mA

150

Ω

I_K

STABILITY

REGION

C_L

10 k

T_A= 25 °C

10¹

10⁰

10²

10³

10⁴

10⁵

10⁶

10⁷

C_L- Load Capacitance (pF)

Figure 13

Rev. 10/30/00

SPX431

ORDERING INFORMATION

Ordering No. Precision Output Accuracy

Packages

5 Lead SOT-23

5 Lead SOT-89

8 Lead SOIC

3 Lead TO-92

0.5%

2.5V

SPX431M5

SPX431M1

SPX431S

SPX431N

Corporation

SIGNAL PROCESSING EXCELLENCE

Sipex Corporation

Headquarters and Main Offices:

22 Linnell Circle

Billerica, MA 01821

TEL: (978) 667-8700

FAX: (978) 670-9001

e-mail: sales@sipex.com

233 South Hillview Drive

Milpitas, CA 95035

TEL: (408) 935-7600

FAX: (408) 934-7500

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

hereing; neither does it convey any license under its patent rights nor the rights of others.

Rev. 10/30/00

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