LMV431_14 datasheet(5/31 Pages) TI1

部品番号	LMV431

部品情報	Adjustable Precision Shunt Regulators

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V

R1

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1

I

R2

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6

REF

6.0 mV

10

1240 mV

V

39 ppm / C

125 C

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6

Max

Min

DEV

REF

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2

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10

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(at 25 C)

V

(at 25 C)

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LMV431, LMV431A, LMV431B

www.ti.com

SNVS041G – MAY 2004 – REVISED SEPTEMBER 2014

7.5 LMV431C Electrical Characteristics

TA = 25°C unless otherwise specified

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TA = 25°C

1.222

1.24

1.258

VZ = VREF, IZ = 10 mA

VREF

Reference Voltage

V

(See Figure 32 )

TA = Full Range

1.21

1.27

Deviation of Reference Input Voltage

VZ = VREF, IZ = 10 mA,

VDEV

4

12

mV

Over Temperature(1)

TA = Full Range (See Figure 32)

Ratio of the Change in Reference

IZ = 10 mA (see Figure 33 )

Voltage to the Change in Cathode

VZ from VREF to 6 V

−1.5

−2.7

mV/V

Voltage

R1 = 10 kΩ, R2 = ∞ and 2.6 kΩ

R1 = 10 kΩ, R2 = ∞

IREF

Reference Input Current

0.15

0.5

μA

II = 10 mA (see Figure 33)

Deviation of Reference Input Current

R1 = 10 kΩ, R2 = ∞,

∝IREF

0.05

0.3

μA

over Temperature

II = 10 mA, TA = Full Range (see Figure 33)

Minimum Cathode Current for

IZ(MIN)

VZ = VREF(see Figure 32)

55

80

µA

Regulation

IZ(OFF)

Off-State Current

VZ= 6 V, VREF = 0 V (see Figure 34 )

0.001

0.1

μA

VZ = VREF, IZ = 0.1 mA to 15 mA

rZ

Dynamic Output Impedance(2)

0.25

0.4

Ω

Frequency = 0 Hz (see Figure 32)

(1)

Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference input voltage over the full temperature

range. See the following:

The average temperature coefficient of the reference input voltage,

∝VREF, is defined as:

Where: T2 − T1 = full temperature change. ∝VREF can be positive or negative depending on whether the slope is positive or negative.

Example: VDEV = 6 mV, VREF = 1240 mV, T2 − T1 = 125°C.

(2)

The dynamic output impedance, rZ, is defined as:

When the device is programmed with two external resistors, R1 and R2, (see Figure 33 ), the dynamic output impedance of the overall

circuit, rZ, is defined as:

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Product Folder Links: LMV431 LMV431A LMV431B

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