TL431AIYD(2005) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TL431AIYD
(Rev.:2005)

Programmable Voltage Reference

STMicroelectronics 

TL431

Electrical Characteristics

Table 4. Tamb = 25°C (unless otherwise specified)

Symbol

Parameter

TL431I

TL431AI

Unit

Min. Typ. Max. Min. Typ. Max.

Reference Input Voltage

Vref

VKA = Vref , Ik = 10 mA, Tamb = 25°C

Tmin ≤Tamb ≤ Tmax

2.44

2.41

2.49

5

2.55

2.58

2.47

2.44

2.49

5

2.52

2.55

V

∆Vref

Reference Input Voltage Deviation Over Temperature

Range (1)

VKA = Vref , Ik =10 mA, Tmin≤Tamb≤ Tmax

7 30

mV

7 30

∆----V---r--e---f

∆Vka

Ratio of Change in Reference Input Voltage to Change

in Cathode to Anode Voltage

Ik = 10mA, ∆VKA = 10V to Vref

∆VKA = 36V to 10V

-1.4 -2.7

-1 -2

mV/V

-1.4 -2.7

-1 -2

Reference Input Current

Ik = 10mA, R1 = 10kΩ, R2 = ∞

Iref

Tamb = 25°C

Tmin ≤Tamb ≤Tmax

1.8 4

6.5

1.8

4

µA

6.5

∆Iref

Reference Input Current Deviation Over Temperature

Range

Ik = 10mA, R1 = 10kΩ, R2 =∞

Tmin ≤Tamb ≤ Tmax

0.8 2.5

µA

0.8 1.2

Minimum Cathode Current for Regulation

Imin

VKA = Vref

0.5 1

mA

0.5 0.7

Ioff Off-State Cathode Current

2.6 1000

2.6 1000 nA

Dynamic Impedance (2)

⏐ZKA⏐ VKA = Vref , ∆ Ik = 1 to100mA, f ≤1kHZ

0.22 0.5

0.22 0.5 Ω

1. ∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range.

∆Vref = Vref max. - Vref min.

V ref max.

V ref min.

T1

T2

2. The dynamic Impedance is definied as |ZKA| = ∆-----V----K-----A--

∆IK

Temperature

5/13

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