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

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

2.7V 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 Themal Resistance

SOT23-5

235˚C/W

Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

≥ 2.0V. Boldface

limits apply over the entire operating temperature range, −40˚C to 125˚C.

Symbol

Parameter

Conditions

Min

(Note 5)

Typ

(Note 4)

Max

(Note 5)

Units

V

O

Output Voltage Accuracy

-3

-4

3

4

%

∆V

Line Regulation

V

−0.3

0.3

%

∆V

Load Regulation

I

1

4

%

I

Q

Quiescent Current

V

EN

≤ 0.4V (Shutdown), PG = NC

.01

1

µA

I

GND

Ground Pin Current (Note 5)

V

EN

≥ 2.0V (active),

V

120

180

µA

I

≥ 2.0V (active),

V

160

225

PSRR

Power Supply Rejection

f = 120H

I

62

dB

I

LIMIT

Current Limit

V

160

350

mA

Thermal Protection

Thermal Shutdown

Temperature

150

˚C

Enable Input

V

IL

Enable Input Voltage Level

Logic Low (off), V

0.4

V

V

IH

Logic High (on), V

2

V

I

IL

Enable Input Current

V

IL

≤ 0.4V, V

0.01

µA

I

IH

V

IH

≥ 2.0V, V

0.01

µA

Power Good

V

PG

Low Threshold

% of V

89

%

High Threshold

% of V

97

V

OL

PG Output Logic-Low

Voltage

Ipowergood = 100µA, Fault

Condition

0.02

0.1

V

I

PG

Power Good Leakage

Current

Power Good Off, V

0.01

µA

V

Delay Time to Power Good

See Timing Diagram

1

5

ms

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.

Note 7: Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin current.

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