If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

V

−0.2V to +6.0V

PGND to SGND

−0.2V to +0.2V

EN, FB, BYP, V

CON

(SGND −0.2V)

to (V

w/6.0V max

SW, BYPOUT

(PGND −0.2V)

to (PV

w/6.0V max

PV

−0.2V to +0.2V

Continuous Power Dissipation

(Note 3)

Internally Limited

Junction Temperature (T

+150˚C

Storage Temperature Range

−65˚C to +150˚C

Maximum Lead Temperature

(Soldering, 10 sec)

+260˚C

ESD Rating (Note 4)

Human Body Model

2.0 kV

Input Voltage Range

2.7V to 5.5V

Recommended Load Current

PWM Mode

0mA to 500mA

Bypass Mode

0mA to 500mA

Junction Temperature (T

−30˚C to +125˚C

Ambient Temperature (T

(Note 5)

−30˚C to +85˚C

Thermal Properties

Junction-to-Ambient Thermal

100˚C/W

Resistance (

θ

face type apply over the full operating ambient temperature range (−30˚C

≤ T

≤ +85˚C). Unless otherwise noted, speci-

fications apply to the LM3203 with: PV

Symbol

Parameter

Conditions

Min

Typ

Max

Units

V

IN

Input Voltage Range

(Note 8)

PV

2.7

5.5

V

V

FB, MIN

Feedback Voltage at

Minimum Setting

V

0.250

0.267

0.284

V

V

FB, MAX

Feedback Voltage at

Maximum Setting

V

1.176

1.200

1.224

V

OVP

Over-Voltage

Protection Threshold

(Note 9)

100

150

mV

I

SHDN

Shutdown Supply

Current (Note 10)

EN = SW = BYPOUT = V

0.1

3

µA

I

Q_PWM

DC Bias Current into

V

DD

V

Switching

675

780

µA

I

Q_BYP

BYP = 3.6V, V

680

780

µA

R

DSON (P)

Pin-Pin Resistance for

P-FET

I

320

450

m

Ω

R

DSON (N)

Pin-Pin Resistance for

N-FET

I

310

450

m

Ω

R

DSON

(BYP)

Pin-Pin Resistance for

Bypass FET

I

85

120

m

Ω

I

LIM-PFET

Switch Current Limit

(Note 11)

700

820

940

mA

I

LIM-BYP

Bypass FET Current

Limit

(Note 12)

800

1000

1200

mA

F

OSC

Internal Oscillator

Frequency

1.7

2

2.2

MHz

V

IH

Logic High Input

Threshold for EN, BYP

1.20

V

V

IL

Logic Low Input

Threshold for EN, BYP

0.4

V

I

PIN

Pin Pull Down Current

for EN, BYP

EN, BYP = 3.6V

5

10

µA

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