Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

ESD Tolerance (Note 2)

Human Body Model

2000V

Machine Model

200V

Junction Temperature

150˚C

V

−0.3 TO 6.5V

Soldering Information

Infrared or Convection (20 sec)

235˚C

Wave Soldering (10 sec)

260˚C (lead temp)

Operating Ratings

Supply Voltages

V

IN

2.5V to 6V

V

EN

0V to V

IN

Junction Temp. Range (Note 3)

−40˚C to +125˚C

Storage Temperature Range

−65˚C to 150˚C

Package Thermal Resistance

SC70-5

478˚C/W

Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

V

EN

≥ 2.0V. Boldface limits apply at the temperature extremes.

Symbol

Parameter

Conditions

Min

(Note 5)

Typ

(Note 4)

Max

(Note 5)

Units

V

O

Output Voltage Accuracy

-3

-4

3

4

%

∆V

∆T

Output Voltage Temp.

Coefficient

(Note 10)

50

200

ppm/˚C

∆V

Line Regulation

V

0.008

0.3

0.5

%

∆V

Load Regulation

I

0.08

0.3

0.5

%

V

Dropout Voltage

(Note 7)

I

2

mV

I

70

150

I

180

I

300

500

I

Q

Quiescent Current

V

EN

≤ 0.4V (Shutdown)

10

100

nA

I

GND

Ground Pin Current

I

≥ 2.0V (active)

70

µA

I

≥ 2.0V (active)

80

135

I

≥ 2.0V (active)

110

200

I

LIMIT

Current Limit

V

200

400

mA

∆V

∆P

D

Thermal Regulation

(Note 9)

0.05

%W

Enable Input

V

IL

Enable Input Voltage Level

Logic Low (off)

0.6

V

V

IH

Logic High (on)

2.0

V

I

IL

Enable Input Current

V

IL

≤ 0.6V

0.01

1

µA

I

IH

V

IH

≥ 2.0V

0.01

5

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

intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.

Note 2: Human body model, 1.5k

Ω in series with 100pF.

Note 4: Typical Values represent the most likely parametric norm.

Note 5: All limits are guaranteed by testing or statistical analysis.

Note 6: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects are covered

by the thermal regulation specification.

Note 7: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential.

Note 8: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load current

plus the ground pin current.

Note 9: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line regulation

Note 10: Output voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.

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