LM4431 datasheet(2/8 Pages) NSC

2 / 8 page

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Reverse Current

20 mA

Forward Current

10 mA

Power Dissipation (T

A = 25˚C) (Note 2)

M3 Package

306 mW

Storage Temperature

−65˚C to +150˚C

Lead Temperature

M3 Package

Vapor phase (60 seconds)

+215˚C

Infrared (15 seconds)

+220˚C

ESD Susceptibility

Human Body Model (Note 3)

2 kV

Machine Model (Note 3)

200V

See AN-450 “Surface Mounting Methods and Their Effect

on Product Reliability” for other methods of soldering

surface mount devices.

Operating Ratings(Notes 1, 2)

Temperature Range

min ≤ TA ≤ Tmax)

0˚C

≤ T

A ≤ +70˚C

Reverse Current

LM4431-2.5

100 µA to 15 mA

LM4431-2.5

Electrical Characteristics

Boldface limits apply for T

A = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C.

Symbol

Parameter

Conditions

Typical

LM4431M3

Units

(Note 4)

Limits

(Limit)

(Note 5)

Reverse Breakdown Voltage

R = 100 µA

2.500

Reverse Breakdown

VoltageTolerance

R = 100 µA

±50

mV (max)

RMIN

Minimum Operating Current

µA

100

µA (max)

∆V

R/∆T

Average Reverse Breakdown

R = 10 mA

±30

ppm/˚C

Voltage Temperature

R = 1mA

±30

ppm/˚C

Coefficient

R = 100 µA

±30

ppm/˚C

∆V

R/∆IR

Reverse Breakdown Voltage

RMIN ≤ IR ≤ 1 mA

0.4

Change with Operating

1.0

mV (max)

Current Change

1.2

mV (max)

1mA

≤ I

R ≤ 15 mA

2.5

8.0

mV (max)

Reverse Dynamic Impedance

R = 1 mA, f = 120 Hz

1.0

Ω

AC = 0.1 IR

Wideband Noise

R = 100 µA

µV

rms

10 Hz

≤ f ≤ 10 kHz

∆V

Reverse Breakdown Voltage

t = 1000 hrs

Long Term Stability

T = 25˚C ±0.1˚C

120

ppm

R = 100 µA

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-

tional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed speci-

fications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.

Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), θJA (junction to am-

bient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax −TA)/θJA or the number

given in the Absolute Maximum Ratings, whichever is lower. For the LM4431, TJmax = 125˚C, and the typical thermal resistance (θJA), when board mounted, is

326˚C/W for the SOT-23 package.

Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k

Ω resistor into each pin. The machine model is a 200 pF capacitor discharged di-

rectly into each pin.

Note 4: Typicals are at TJ = 25˚C and represent most likely parametric norm.

Note 5: Limits are 100% production tested at 25˚C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQC) methods. The

limits are used to calculate National’s AOQL.

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