SPX431B datasheet(3/12 Pages) SIPEX

3 / 12 page

Date: 1/19/05

SPX431A,B,C Precision Adjustable Shunt Regulator

PARAMETER

SYMBOL

FIGURE

CONDITIONS

MIN

TYP

MAX

UNITS

SPX431C

Reference Voltage

VREF

2.445

2.495

2.545

2TJ = 0°C to 105°CV

∆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 36V

-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 = 36V

0.04

1000

Dynamic Output

ZKA

2ƒz = 1kHz

0.15

0.5

Ω

Impedance

IK = 1 to 150mA

∆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 ) = -40°C to 125°C.

* See appropiate test circuit (Figure 2)

SOT-23-5 (M5)

Top View

SPX431

Top View

SPX431

SOT-89 (M1)

Bottom View

TO-92 (N)

N/C

REF

ANODE

CATHODE

ANODE

REF

Top View

SPX431

8-Pin Surface Mount (S)

CATHODE

REF

ANODE

N/C

CATHODE

ANODE

REF

PACKAGE PINOUTS

SPX431B Datasheet(PDF) 3 Page - Sipex Corporation

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