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Date: 12/11/04

SPX432 1.24V Precision Adjustable Shunt Regulator

© Copyright 2004 Sipex Corporation

ABSOLUTE MAXIMUM RATINGS

Cathode-Anode Reverse Breakdown V

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

Operating Cathode Current I

Reference Input Current I

Continuous Power Dissipation at 25°C P

D

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

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

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

Junction Temperature T

Storage Temperature T

Lead Temperature (Soldering 10 sec.) T

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 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

PARAMETER

SYMBOL

TEST

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

CIRCUIT

SPX432A

SPX432

Output Voltage

3a

1.2338

1.240

1.2462

1.2276

1.240

1.2524

V

Temperature Deviation

3a

20

1220

mV

Line Regulation

3b

19

37

19

37

mV

Load Regulation

3a

12

30

12

30

mV

Reference Input Current

3b

3

6

36

µA

Reference Input Current

3b

0.3

0.6

0.3

0.6

µA

Temperature Coefficient

Minimim Cathode

3a

0.6

1

0.6

1

mA

Current for Regulation

Off State Leakage

3c

0.04

500

0.04

500

nA

RECOMMENDED CONDITIONS

PARAMETER

SYMBOL

RATING

UNIT

Cathode Voltage

V

Cathode Current

10

mA

TYPICAL THERMAL RESISTANCES

PACKAGE

TYPICAL

DERATING

TO-92

160°C/W

80°C/W

6.3mW/°C

SOT-23

575°C/W 150°C/W

1.7 mW/°C

SOIC-8

175°C/W

45°C/W

5.7mW/°C

Typical deratings of the thermal resistances are given for ambient

temperature >25°C.

ELECTRICAL CHARACTERISTICS