TL431AIYD(2005) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TL431AIYD
(Rev.:2005)

Programmable Voltage Reference

STMicroelectronics 

Electrical Characteristics

3 Electrical Characteristics

TL431

Table 3. Tamb = 25°C (unless otherwise specified)

Symbol

Parameter

TL431C

TL431AC

Unit

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

Reference Input Voltage

Vref

VKA = Vref , Ik = 10 mA, Tamb = 25°C

Tmin ≤Tamb ≤ Tmax

2.44 2.495 2.55 2.47 2.495 2.52 V

2.423

2.567 2.453

2.537

∆Vref

Reference Input Voltage Deviation Over Temperature

Range (1)

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

3 17

mV

3 15

∆----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

Iref

Ik = 10mA, R1 = 10kΩ, R2 = ∞

Tamb = 25°C

Tmin ≤Tamb ≤Tmax

1.8 4

5.2

µA

1.8 4

5.2

Reference Input Current Deviation Over Temperature

Range

∆Iref

Ik = 10mA, R1 = 10kΩ, R2 =∞

Tmin ≤Tamb ≤ Tmax

0.4 1.2

µA

0.4 1.2

Minimum Cathode Current for Regulation

Imin

VKA = Vref

0.5 1

mA

0.5 0.6

Ioff Off-State Cathode Current

Dynamic Impedance (2)

⏐ZKA⏐

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

2.6 1000

0.22 0.5

2.6 1000 nA

Ω

0.22 0.5

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

4/13

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