SPX1432 datasheet(2/7 Pages) SIPEX

2 / 7 page

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

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

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.

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:

KA = VREF and IK = 10mA.

PARAMETER

SYMBOL

FIGURE CONDITIONS

MIN

TYP

MAX

UNITS

Accuracy 0.5%

SPX1432A

Output Voltage

VREF

2TJ = 25°C

1.234

1.240

1.246

Temperature Deviation

VREF

20 < TJ < 105°C6

Line Regulation

VREF

3VKA = 1.25V to 15V

Load Regulation

VREF

2IK = 100µA to 100mA

Reference Input Current

IREF

3TJ = 25°C, R1 = 10KΩ, R2 = ∞

0.1

0.3

µA

Reference Input Current

IREF

30 < TJ < 105°C,

0.05

0.2

µA

Temperature Coefficient

R1 = 10KΩ, R2 = ∞

Minimim Cathode

IK(MIN)

2TJ = 25°C60

µA

Current for Regulation

Off State Leakage

IK(MIN)

4VREF = 0V, VKA = 18V, TJ = 25°C

0.01

500

PARAMETER

SYMBOL

FIGURE CONDITIONS

MIN

TYP

MAX

UNITS

Accuracy 1.0%

SPX1432

Output Voltage

VREF

2TJ = 25°C

1.228

1.240

1.252

Temperature Deviation

VREF

20 < TJ < 105°C9

Line Regulation

VREF

3VKA = 1.25V to 15V

Load Regulation

VREF

2IK = 100µA to 100mA

Reference Input Current

IREF

3TJ = 25°C, R1 = 10KΩ, R2 = ∞

0.1

0.5

µA

Reference Input Current

IREF

30 < TJ < 105°C,

0.05

0.4

µA

Temperature Coefficient

R1 = 10KΩ, R2 = ∞

Minimim Cathode

IK(MIN)

2TJ = 25°C60

100

µA

Current for Regulation

Off State Leakage

IK(MIN)

4VREF = 0V, VKA = 18V, TJ = 25°C

0.01

500

RECOMMENDED CONDITIONS

PARAMETER

SYMBOL

RATING

UNIT

Cathode Voltage

VKA

VREF to 20

Cathode Current

TYPICAL THERMAL RESISTANCES

PACKAGE

θθ

θJA

θθ

θJC

TYPICAL

DERATING

SOT-23

575°C/W 150°C/W

1.7 mW/°C

Typical deratings of the thermal resistances are given for ambient

temperature >25°.

ABSOLUTE MAXIMUM RATINGS

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