SPX431LAS datasheet(3/12 Pages) SIPEX

3 / 12 page

Date: 5/25/04

SPX431L Precision Adjustable Shunt Regulator

PARAMETER

SYMBOL

FIGURE

CONDITIONS

MIN

TYP

MAX

UNITS

SPX431LC

Reference Voltage

VREF

2.445

2.495

2.545

∆VREF withTemp.*

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 20V

-2.0

-0.4

0.3

Reference Input Current

IREF

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)

0.4

1.0

Off State Leakage

IK(OFF)

4VREF = 0V, VKA = 16V

0.04

1.0

µA

Dynamic Output

ZKA

2ƒz ≤ 1kHz

0.15

0.5

Ω

Impedance

IK = 1 to 100mA

∆T

∆V

REF

015

304560

7590

105

-10

0.5

5000

0.07 mV/°C

0.003 %/°C

27 ppm/°C

ppm

Junction Temperature (°C)

• TC in ppm/°C =

• TC in %/°C =

• TC in mV/°C = ∆

VREF (mV)

∆TA

(∆

VREF at 25°C

)

∆TA

∆VREF

x 100

(∆

VREF at 25°C

)

∆TA

∆VREF

x 106

CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)

Figure 1. V

REF VS Temperature.

Operating Range (T

J) = 0°C to 105°C.

* See appropiate test circuit (Figure 2)

ELECTRICAL CHARACTERISTICS

Electrical characteristics at 25

°C I

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

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