SPX431B datasheet(2/12 Pages) SIPEX

Part #	SPX431B

Description	Precision Adjustable Shunt Regulator

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Manufacturer	SIPEX [Sipex Corporation]

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Date: 1/19/05

SPX431A,B,C Precision Adjustable Shunt Regulator

ABSOLUTE MAXIMUM RATINGS

Cathode-Anode Reverse Breakdown V

KA ....................................... 37V

Anode-Cathode Forward Current, (<10ms) I

AK ................................. 1A

Operating Cathode Current I

KA .................................................. 150mA

Reference Input Current I

REF ........................................................ 10mA

Continuous Power Dissipation at 25°C P

D

TO-92 ..................................................................... 775mW

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

SOIC-8 .................................................................... 750mW

SOT-89 ................................................................. 1000mW

Junction Temperature T

J ........................................................... 150 °C

Storage Temperature T

STG .............................................. -65 to 150 °C

NOTE: 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 condi-

tions for extended periods may affect reliability.

RECOMMENDED CONDITIONS

PARAMETER

SYMBOL

RATING

UNIT

Cathode Voltage

VKA

VREF to 36

V

Cathode Current

IK

10

mA

TYPICAL THERMAL RESISTANCES

PACKAGE

0JA

0JC

TYPICAL DERATING

TO-92

160°C/W 80°C/W

6.3 mW/°C

SOT-23

575°C/W 150°C/W

1.7 mW/°C

SOIC-8

175°C/W 45°C/W

5.7 mW/°C

SOT-89

110°C/W

8°C/W

9.1 mW/°C

Typical deratings of the thermal resistances are given for ambient

temperature >25°.

ELECTRICAL CHARACTERISTICS

Electrical characteristics at 25

°C I

K = 10mA VK = VREF, unless otherwise specified.

PARAMETER

SYMBOL

FIGURE

CONDITIONS

MIN

TYP

MAX

UNITS

SPX431A

Reference Voltage

VREF

2

2.490

2.503

2.515

V

2TJ = 0°C to 105°C

2.469

2.536

V

∆VREF withTemp.*

TC

2

0.07

0.20

mV/°C

Ratio of Change in VREF

∆ VREF

3VREF to 10V

-2.7

-1.0

mV/V

to Cathode Voltage

∆VK

10V to 36V

-2.0

-0.4

0.3

Reference Input Current

IREF

3

0.7

4.0

µA

IREF Temp Deviation

∆IREF

3TJ = 0°C to 105°C

0.4

1.2

µA

Min IK for Regulation

IK(MIN)

2

0.4

1.0

mA

Off State Leakage

IK(OFF)

4VREF = 0V, VKA = 36V

0.04

250

nA

Dynamic Output

ZKA

2ƒz = 1kHz

0.15

0.5

Ω

Impedance

IK = 1 to 150mA

SPX431B