SPX432AM [SIPEX]

Ultra 1.24V Precision Adjustable Shunt Regulator; 超1.24V精密可调并联稳压器


型号：	SPX432AM
厂家：	SIPEX CORPORATION
描述：	Ultra 1.24V Precision Adjustable Shunt Regulator 超1.24V精密可调并联稳压器稳压器电源电路参考电压源光电二极管输出元件
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SPX432

Ultra 1.24V Precision Adjustable

Shunt Regulator

FEATURES

APPLICATIONS

•

Low Voltage Operation........................................ 1.24V

•

3.0V to 3.3V Switching Power Supplies

Adjustable Supplies

Trimmed Bandgap to...................................0.5%/ 1%

Wide Operating Current ................... 1mA to 100mA

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

Adjustable Output Voltage...........................V_REFto 18V

Low Temperature Coefficient ....................... 50 ppm/°C

Offered in TO-92, SOIC, SOT-23-3, SOT-23-5

Error Amplifiers

Single Supply Amplifier

Monitors / VCR / TV

Personal Computers

Improved Replacement in Performance for TLV431

PRODUCT DESCRIPTION

The SPX432 is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate 1.24V bandgap reference with 0.5%

tolerance. The SPX432 thermal stability, wide operating current (80mA) and temperature range (0°C to 105°C) makes it suitable for

abroad range of applications. SPX432 tolerance of 0.5% is proven to be sufficient to overcome 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 SPX432 is an ideal voltage reference in an isolated feedback circuit for 3.0V to 3.3V switching mode power supplies. SPX432

offers many advantages over TLV431, such as, wider output voltage up to 18V vs. 6V, output current of 80mA vs. 15mA, and a wider

temperature range with tighter tolerance down to 0.5%.

PIN CONNECTIONS

8-Pin Surface Mount (S)

TO-92 (N)

CATHODE

ANODE

N/C

REF

ANODE

N/C

SPX432

REF

CATHODE

ANODE

Top View

Bottom View

SOT-23-5 (M5)

SOT-23-3 (M)

ANODE

REF

SPX432

N/C N/C

REF

CATHODE

Top View

Rev. 11/21/00

SPX432

CATHODE (K)

REFERENCE

(R)

1.24V

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 at 25°C

TO-92

V_DA

I_AK

I_KA

I_REF

P_D

775

750

°C

8L SOIC

200

SOT-23

Junction Temperature

Storage Temperature

Lead Temperature (Soldering 10 sec.)

T_J

T_STG

150

- 65 to +150

300

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.

RECOMMENDED CONDITIONS

TYPICAL THERMAL RESISTANCES

Parameter

Symbol

V_KA

Rating

V_REFto 18

Unit

Package

TO-92

SOIC

Typical Derating

6.3 mW/°C

θ_JA

θ_JC

Cathode Voltage

Cathode Current

160 °C/W

80 °C/W

45 °C/W

I_K

175 °C/W

5.7 mW/°C

SOT-23

575°C/W

150°C/W

1.7mW/°C

Rev. 11/21/00

SPX432

ELECTRICAL CHARACTERISTICS are guaranteed 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.

Test

SPX432A

SPX432

Parameter

Symbol Circuit Test Condition

Min

Typ

Max

Min

Typ

Max

Unit

Output Voltage

V_REF

I_K= 10mA,

1.2338 1.240

1.2462

1.2276 1.240 1.2524

T_J= 25°C,

V_K= V_REF

Line Regulation

Load Regulation

Temperature Deviation

Reference Input Current

V_REF

I_REF

V_KA= 1.25V to 15V

0.3

0.6

0.3

0.6

µA

I_K= 1 to 80mA

0 < T_J< 105°C

Reference Input Current

Temperature Coefficient

Minimum Cathode

I _REF

0 < T_J< 105°C

I_{K (MIN)}

0.6

Current for Regulation

Off State Leakage

V_REF= 0V, V_KA

18V

0.04

500

0.04

500

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

_REFat 25°C

∆

T_A

x 100

)

-10

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

R₂

I_REF

)

Figure 1a. Test Circuit 1

Figure 1b. Test Circuit 2

Figure 1c. Test Circuit 3

Rev. 11/21/00

SPX432

TYPICAL APPLICATIONS

+3.3V

0.1µF

470µF

PHD 3055E

+12V

500Ω

2.7V

140

Ω

0.1µF

INTEL

I 740

AS432

1000µF

120

Ω

*If the output voltage has noise, then please add a 0.1µF in between drain and gate of power

MOSFET to reduce the noise.

Rev. 11/21/00

SPX432

PACKAGE DRAWING

SOIC-8 (S)

4.0 (0.158)

3.8 (0.150)

5.2 (0.205)

4.6 (0.181)

6.2 (0.244)

5.8 (0.228)

Pin 1

1.27 (0.50)

BSC

1.75 (0.069)

1.35 (0.053)

0.78 (0.031)

0.61 (0.024)

0.77 (0.030)

0.64 (0.025)

(4 PLCS)

5.0 (0.197)

4.8 (0.188)

0.37 (0.015)

BSC

3 -6

0.56 (0.022)

0.49 (0.019)

0.22 (0.009)

0.19 (0.007)

(4 PLCS)

0.45 (0.018)

0.35 (0.014)

0.20 (0.008)

0.10 (0.004)

Rev. 11/21/00

SPX432

PACKAGE DRAWING

SOT-23-3L (M)

0.015 - 0.018

(0.381 - 0.457)

0.047 - 0.055 0.083 - 0.098

(1.194 - 1.397) (2.108 - 2.489)

0.035 - 0.040

(0.889 - 1.016)

0.020 - 0.024

0.070 - 0.080

(0.508 - 0.610)

(1.778 - 2.032)

0.110 - 0.120

0.003 - 0.005

(2.794 - 3.048)

(0.076 - 0.127)

0.030 - 0.041

0.018 - 0.024

(0.457 - 0.610)

0.001 - 0.004

(0.025 - 0.102)

(0.762 - 1.041)

Rev. 11/21/00

SPX432

PACKAGE DRAWING

TO-92 (N)

0.090 (2.286) Radius typ.

0.145 (3.683)

0.135 (3.429)

0.055 (1.397)

0.045 (1.143)

10° typ.

BOTTOM VIEW

0.085 (2.159) Diameter

0.185 (4.699)

0.045 (1.143)

5° typ.

0.185 (4.699)

0.175 (4.445)

0.090 (2.286) typ.

Seating Plane

0.025 (0.635) Max

Uncontrolled

Lead Diameter

0.500 (12.70) Min.

0.016 (0.406)

0.014 (0.356)

0.0155 (0.3937)

0.0145 (0.3683)

0.055 (1.397)

0.045 (1.143)

0.105 (2.667)

0.095 (2.413)

Rev. 11/21/00

SPX432

PACKAGE DRAWING

SOT-23-5L (M5)

B (5 PLACES)

INCHES

MILLIMETERS

NOTE:

1. REFER TO APPLICABLE

MIN.

0.90

MAX

1.30

0.10

MIN.

MAX.

.035

.051

.004

2. CONTROLLING DIMENTION : MILLIMETER

3. PACKAGE SURFACE FINISHING TO BE SMOOTH

FINISH.

0.80 REF

.0315 REF

0.30

0.10

2.70

1.40

0.50

0.35

3.10

1.80

.012

.004

.106

.055

.019

.0137

.122

.071

.037 BSC.

0.95 BSC.

1.70

2.50

2.10

3.00

.066

.098

.082

.118

MIN 0.2

MIN .0078

Rev. 11/21/00

SPX432

ORDERING INFORMATION

Ordering No. Precision Output Accuracy

Packages

3 Lead SOT-22-3

3 Lead SOT-23-3

5 Lead SOT-22-5

5 Lead SOT-23-5

8 Lead SOIC

0.5%

1.24V

SPX432M

SPX432AM

SPX432M5

SPX432AM5

SPX432S

0.5%

8 Lead SOIC

SPX432AS

SPX432N

3 Lead TO-92

0.5%

3 Lead TO-92

SPX432AN

MARKING INFORMATION

[For SOT-23 (3 and 5 Pin) and SOT-89 only]

Device

SPX432A

SPX432

Marking

4321

4322

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. 11/21/00

SPX432AM [SIPEX]

相关型号：

SPX432AM-L/TR

SPX432AM/TR

SPX432AM/TR

SPX432AM5

SPX432AN

SPX432AN-L

SPX432AN/TR

SPX432AS

SPX432AS-L

SPX432AS/TR

SPX432L

SPX432LM