ZHT2431 datasheet(2/6 Pages) DIODES

2 / 6 page

ELECTRICAL CHARACTERISTICS

TEST CONDITIONS (Unless otherwise stated):Tamb=25°C

PARAMETER

SYMBOL

VALUE

UNITS CONDITIONS

MIN TYP MAX

Reference Voltage

2.5% Vref

1.21 1.24 1.27 V

IL=10mA (Fig1), VZ=Vref

Deviation of Reference Input

Voltage over Temperature

Vdev

5.0

15.0 mV

IL=10mA, VZ=Vref

Ta=full range (Fig1)

Ratio of the change in

Reference Voltage to the

Change in Cathode Voltage

∆Vref

∆VZ

0.5

2.0

mV/V VZ from Vref to 10V

IZ=10mA (Fig2)

Reference Input Current

Iref

0.02 0.11 0.4

µA

R1=10K, R2=O/C, lL=10mA

(Fig2)

Deviation of Reference Input

Current over Temperature

∆

Iref

0.02 0.2

µA

R1=10K, R2=O/C, IL=10mA

Ta=full range (Fig2)

Minimum Cathode Current

for Regulation

IZmin

100 µA

Off-state Current

IZoff

µA

VZ=15V, Vref =0V (Fig3)

Dynamic Output

Impedance

0.25 2

Ω

VZ=Vref (Fig1), f=0Hz,

IL=10mA

Deviation of reference input voltage, Vdev, is defined as the maximum variation of the

reference input voltage over the full temperature range.

The average temperature coefficient of the reference input voltage, Vref is defined as:

Vref (

ppm⁄ °C)=

Vdev x 1000000

Vref (T1−T2)

The dynamic output impedance, Rz, is defined

as:

RZ =

∆VZ

∆IZ

When the device is programmed with two

external resistors, R1 and R2, (fig 2) , the

dynamic output impedance of the overall

circuit, R, is defined as:

=Rz 









With a capacitance of greater than 100pF

between cathode and anode, minimum

cathode current must be 0.2mA.

Vmax

Vmin

Vdev = Vmax - Vmin

Temperature

ZHT2431

ABSOLUTE MAXIMUM RATING

Cathode Voltage (VZ)

15V

Cathode Current

50mA

Operating Temperature

-55 to 125°C

Storage Temperature

-55 to 125°C

Recommended Operating Conditions

Cathode Voltage (min)VREF to (max) 15V

Cathode Current (min) 100µA to (max) 25mA

Power Dissipation (Tamb=25°C, Tjmax=150°C)

SOT23

330mW

TO92

780mW

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