TL1431CDT 데이터 시트보기 (PDF) - STMicroelectronics

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TL1431CDT

Programmable voltage reference

STMicroelectronics 

TL1431

Electrical characteristics

Table 4.

Symbol

Tamb = 25°C (unless otherwise specified)

Parameter

TL1431I

TL1431AI

Unit

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

Vref

ΔVref

Δ-----V----r--e----f

ΔT

Δ-Δ----VV----rk--e--a--f

Iref

ΔIref

Imin

Ioff

⏐ ZKA⏐

Reference input voltage - see Figure 4

VKA = Vref , Ik = 10 mA

2.490 2.500 2.510 2.493 2.500 2.507 V

Reference input voltage deviation over

temperature range (1) - see Figure 4

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

7 30

7 30 mV

Temperature coefficient of reference input

voltage(2)

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

±22 ±100

±22 ±100 ppm/°C

Ratio of change in reference input voltage to

change in cathode to anode voltage - see

Figure 5

Ik = 10mA - ΔVKA = 36V to 3V

-2 -1.1

-2 -1.1

mV/V

Reference input current

Ik = 10mA, R1 = 10kΩ, R2 = ∞

Tmin ≤ Tamb ≤ Tmax

1.5 2.5

3

1.5 2.5 µA

3

Reference input current deviation over

temperature range

Ik = 10mA, R1 = 10kΩ, R2 =∞, Tmin ≤ Tamb ≤ Tmax

0.5 1

0.8 1.2 µA

Minimum cathode current for regulation - see

Figure 4

VKA = Vref

0.5 1

0.5 0.7 mA

Off-state cathode current - see Figure 6

180 500

180 500 nA

Dynamic impedance (3)

VKA = Vref , ΔIk= 1 to100mA, f ≤ 1kHz

0.2 0.5

0.2 0.5

Ω

1. See Reference input voltage deviation over temperature range in Section 4: Parameter definitions on page 9.

2. See Temperature coefficient of reference input voltage in Section 4: Parameter definitions on page 9.

3. See Dynamic impedance in Section 4: Parameter definitions on page 9.

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