SPX1432M-L [EXAR]

Two Terminal Voltage Reference, 1 Output, 1.24V, Trim/Adjustable, PDSO3, SOT-23, 3 PIN;


型号：	SPX1432M-L
厂家：	EXAR CORPORATION
描述：	Two Terminal Voltage Reference, 1 Output, 1.24V, Trim/Adjustable, PDSO3, SOT-23, 3 PIN 光电二极管输出元件
文件：	总7页 (文件大小：99K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SPX1432

1.24V Precision Adjustable Shunt Regulator

FEATURES

■ Reference Voltage: 1.24V

ANODE

■ Initial Accuracy: 0.5%

■ Wide Operating Current, 60µA to 100mA

■ Ultra Low Reference Input Current, 100nA

■ Operating Voltage Range: V_REFto 20V

■ 0°C to 105°C Guaranteed Operation

■ SOT-23-3 Package

SPX1432

REF

CATHODE

■ Upgrade to LMV431, TLV431, SC431L

APPLICATIONS

■ Switching Power Supplies

■ Adjustable Supplies

■ Error Amplifiers

■ Single Supply Amplifier

■ Monitors / VCRs / TVs

■ Personal Computers

■ Voltage References

DESCRIPTION

The SPX1432 is a three terminal adjustable shunt voltage regulator that provides a highly accurate 1.24V

bandgap reference with 0.5% accuracy, eliminating the need for trimming in most power supply designs.

Offered in the tiny SOT-23 package, the SPX1432 has an extremely wide operating current range of 60uA

to 100mA, and reference input current of only 100nA (typ). The SPX1432 can regulate outputs from V_REF

to 20V, using two external resistors, and is guaranteed over the extended commercial temperature range

of 0°C to 105°C.

The combination of the small size, wide output current capability, flexible voltage range, and stable

performance over the entire extended commercial temperature range, makes the SPX1432 the ideal

candidate a variety of shunt regulator and current source designs in applications such as Portable meters,

Instrumentation, and Industrial Process Control.

FUNCTIONAL DIAGRAM

Cathode (K)

Reference

(R)

1.24V

Anode (A)

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

ABSOLUTE MAXIMUM RATINGS

Cathode-Anode Reverse Breakdown V_KZ....................................... 22V

Anode-Cathode Forward Current, (<10ms) I_AK................................. 1A

Operating Cathode Current I_KA.................................................. 120mA

Reference Input Current I_REF.......................................................... 1mA

Continuos Power Dissipation at 25°C P_D

SOT-23 .................................................................. 200 mW

Junction Temperature T_J........................................................... 150 °C

Storage Temperature T_STG.............................................. -65 to 150 °C

Lead Temperature (Soldering 10 sec.) T_L.................................. 300°C

Stresses greater than those listed under ABSOLUTE 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.

TYPICAL THERMAL RESISTANCES

RECOMMENDED CONDITIONS

PARAMETER

SYMBOL

RATING

V_REFto 20

UNIT

PACKAGE

θ_JA

θ_JC

TYPICAL

DERATING

Cathode Voltage

Cathode Current

V_KA

I_K

SOT-23

575°C/W 150°C/W 1.7 mW/°C

Typical deratings of the thermal resistances are given for ambient

temperature >25°.

ELECTRICAL CHARACTERISTICS

Electrical characteristics are guaranted over the full junction temperature range (0°C to 105°C). Ambient temperature must

be derated based upon power dissipation and package thermal characteristics. Unless otherwise specified, test conditions are:

V_KA= V_REFand I_K= 10mA.

PARAMETER

SYMBOL FIGURE CONDITIONS

MIN

TYP

MAX

UNITS

Accuracy 0.5%

SPX1432A

Output Voltage

V_REF

I_REF

T_J= 25°C

1.234

1.240

1.246

Temperature Deviation

Line Regulation

0 < T_J< 105°C

µA

V_KA= 1.25V to 15V

I_K= 100µA to 100mA

T_J= 25°C, R1 = 10KΩ, R2 = ∞

Load Regulation

Reference Input Current

0.1

0.05

0.3

0.2

Reference Input Current

Temperature Coefficient

I_REF

0 < T_J< 105°C,

R1 = 10KΩ, R2 = ∞

Minimim Cathode

Current for Regulation

I_K(MIN)

T_J= 25°C

µA

Off State Leakage

I_K(MIN)

V_REF= 0V, V_KA= 18V, T_J= 25°C

0.01

500

PARAMETER

SYMBOL FIGURE CONDITIONS

MIN

TYP

MAX

UNITS

Accuracy 1.0%

SPX1432

1.240

Output Voltage

V_REF

I_REF

T_J= 25°C

1.228

1.252

Temperature Deviation

Line Regulation

0 < T_J< 105°C

µA

V_KA= 1.25V to 15V

I_K= 100µA to 100mA

T_J= 25°C, R1 = 10KΩ, R2 = ∞

Load Regulation

Reference Input Current

0.1

0.5

0.4

Reference Input Current

Temperature Coefficient

I_REF

0 < T_J< 105°C,

R1 = 10KΩ, R2 = ∞

0.05

Minimim Cathode

Current for Regulation

I_K(MIN)

T_J= 25°C

100

500

µA

Off State Leakage

I_K(MIN)

V_REF= 0V, V_KA= 18V, T_J= 25°C

0.01

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

CALCULATION AVERAGE TEMPERATURE COEFICIENT (TC)

ppm

∆

V_REF(mV)

T_A

•

TC in mV / °C =

TC in % / °C =

∆

∆V_REF

∆T

∆

V_REF

x 100

(

∆

V_REFat 25°C

)

T_A

-5

∆

5000

0.5

∆

V_REF

x 10⁶

(

∆

V_REFat 25°C

)

T_A

•

TC in ppm / °C =

75 90 105

∆

Junction Temperature (°C)

0.0033mV /°C

0.0027% / °C

27ppm/°C

Figure 1. V_REFVS Temperature.

TEST CIRCUITS

V_IN

V_KA

V_REF

V_IN

V_KA

V_IN

V_KA

I_{K (OFF)}

(V_REF

I_K

I_REF

I_K

I_REF

)

Figure 2. Test Circuit for V_KA= V_REF

Figure 3. Test Circuit for V_KA> V_REF

Figure 4. Test Circuit for I_KOFF

TYPICAL PERFORMANCE CHARACTERISTICS

15.0

200

12.5

10.0

7.5

= V

REF

25°C

160

120

5.0

2.5

-2.5

-5.0

-7.5

-10.0

1.24

-60 -40 -20

20 40

60 80 100 120

-2

-1

-Ambient Temperature (°C)

Cathode Voltage (V)

Reference Input Current VS Ambient Temperature.

High Current Operating Characteristics.

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

TYPICAL PERFORMANCE CHARACTERISTICS: Continued

1.25

1.245

1.24

1.25

1.245

1.24

1.235

1.23

1.225

1.22

-60

1.235

-30

120

0.01

0.1

100

Ik--cathode Current (mA)

-Ambient Temperature (°C)

Reference Voltage VS Ambient Temperature.

Reference Voltage Load Regulation.

1000.0000

100.0000

10.0000

1.0000

-10

-20

-30

-40

0.1000

0.0100

0.0010

0.0001

-50

100

150

Ta Ambient Temperature (C)

-Cathode Voltage (V)

Reference Voltage Line Regulation.

Off State Leakage VS Ambient Temperature.

OUT

Ch1-V_IN

= 100kHz

50Ω

Ch2-V_KA

GND

Test Circuit for Pulse Response.

I_KA= 0 to 100µA.

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

TYPICAL PERFORMANCE CHARACTERISTICS: Continued

I_KA= 0 to 300µA.

I_KA= 0 to 1mA.

I_KA= 0 to 10mA.

I_KA= 0 to 50mA.

I_KA= 0 to 80mA

I_KA= 0 to 100mA

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

PACKAGE: 3 PIN SOT23

SEE VIEW C

Gauge Plane

VIEW C

3 PIN SOT-23

JEDEC TO-236

(AB) Variation

Dimensions in (mm)

MIN NOM MAX

0.89

0.01

1.12

0.10

Seating Plane

SIDE VIEW

0.88 .95 1.02

0.30

0.08

0.50

0.20

2.80 2.90 3.04

0.95 BSC

WITH PLATING

1.90 BSC

2.10

2.64

1.20 1.30 1.40

0.30

0º

0.45

0.54 REF

0.60

8º

BASE METAL

3 PIN SOT-23

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

ORDERING INFORMATION

PART NUMBER

ACC

OUTPUT VOLTAGE

TOP MARK

PACKAGES

SPX1432AM ............ 0.5% .................. 1.24V .......................... W1 ............ 3-Pin SOT-23

SPX1432AM/TR ...... 0.5% .................. 1.24V .......................... W1 ............ 3-Pin SOT-23

SPX1432M............... 1.0% .................. 1.24V ........................... F2 ............ 3-Pin SOT-23

SPX1432M/TR......... 1.0% .................. 1.24V ........................... F2 ............ 3-Pin SOT-23

/TR = Tape and Reel

Pack quantity is 2500 for SOT-23.

Corporation

ANALOGEXCELLENCE

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.

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

SPX1432M-L [EXAR]

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