If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Storage Temperature Range

−65˚C to +150˚C

Operating Junction Temperature Range

−40˚C to +125˚C

Lead Temperature (Soldering, 5 seconds)

260˚C

Power Dissipation (Note 2)

Internally Limited

Input Supply Voltage

7.5V

ESD Rating (Note 3)

2 kV

Electrical Characteristics

Limits in standard typeface are for T

less otherwise specified: V

Symbol

Parameter

Conditions

Typical

LM3940 (Note 4)

Units

min

max

V

O

Output Voltage

5 mA

≤ I

3.3

3.20

3.40

V

3.13

3.47

Line Regulation

I

20

40

mV

4.5V

≤ V

Load Regulation

50 mA

≤ I

35

50

80

Z

O

Output Impedance

I

I

35

m

Ω

f = 120 Hz

I

Q

Quiescent Current

4.5V

≤ V

10

15

mA

I

20

V

110

200

I

250

e

n

Output Noise Voltage

BW = 10 Hz–100 kHz

150

µV (rms)

I

V

Dropout Voltage

I

0.5

0.8

V

(Note 5)

1.0

I

110

150

mV

200

I

Short Circuit Current

R

1.7

1.2

A

Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the de-

vice outside of its rated operating conditions.

The value of

The effective value of

Note 3: ESD rating is based on the human body model: 100 pF discharged through 1.5 k

Ω.

via correlation using standard Statistical Quality Control (SQC) methods.

Note 5: Dropout voltage is defined as the input-output differential voltage where the regulator output drops to a value that is 100 mV below the value that is measured

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