Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Voltages from the indicated pins to GND unless otherwise

indicated (Note 2):

VIN

-0.3V to 30V

V5

-0.3V to 7V

VDD

-0.3V to 7V

BOOT1, BOOT2

-0.3V to 36V

BOOT1 to SW1, BOOT2 to

SW2

-0.3V to 7V

SW1, SW2

-0.3V to 30V

ILIM1, ILIM2

-0.3V to 30V

SENSE1, SENSE2, FB1, FB2

-0.3V to 7V

PGOOD

-0.3V to 7V

EN

-0.3V to 7V

Junction Temperature

+150˚C

ESD Rating (Note 3)

2kV

Ambient Storage Temperature

Range

-65˚C to +150˚C

Soldering Dwell Time,

Temperature

Wave

Infrared

Vapor Phase

4 sec, 260˚C

10 sec, 240˚C

75 sec, 219˚C

Operating Ratings (Note 1)

VIN

4.5V to 28V

VDD, V5

4.5V to 5.5V

Junction Temperature

-40˚C to +125˚C

Electrical Characteristics

Specifications with standard typeface are for T

Operating Junction Temperature range. VDD = V5 = 5V, V

Ω un-

less otherwise stated (Note 4). Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

Symbol

Parameter

Conditions

Min

Typical

(Note

5)

Max

Units

Reference

V

FB

FB Pin Voltage at

Regualtion (either FB Pin)

VDD = 4.5V to 5.5V,

VIN = 4.5V to 28V

591

600

609

mV

V

FB_LINE REG

V

∆V

VDD = 4.5V to 5.5V,

VIN = 4.5V to 28V

0.5

I

FB

FB Pin Current (sourcing)

V

20

100

nA

Chip Supply

I

Q_VIN

VIN Quiescent Current

V

100

200

µA

I

SD_VIN

VIN Shutdown Current

V

0

5

µA

I

Q_VDD

VDD Quiescent Current

V

2.5

4

mA

I

SD_VDD

VDD Shutdown Current

V

6

15

µA

I

Q_V5

V5 Normal Operating

Current

V

0.3

0.5

mA

V

1

1.5

I

SD_V5

V5 Shutdown Current

V

0

5

µA

I

Q_BOOT

BOOT Quiescent Current

V

2

5

µA

V

300

500

I

SD_BOOT

BOOT Shutdown Current

V

1

5

µA

V

DD_UVLO

VDD UVLO Threshold

VDD rising up to V

UVLO

3.9

4.2

4.5

V

VDD UVLO Hysteresis

VDD = V5 falling from V

UVLO

0.5

0.7

0.9

V

V

IN_UVLO

VIN UVLO Threshold

VIN rising up to V

UVLO

3.9

4.2

4.5

V

VIN UVLO Hysteresis

VIN falling from V

UVLO

0.1

0.3

V

Logic

I

EN

EN Input Current

V

0

µA

V

EN_HI

Minimum EN Input Logic

High

2

V

V

EN_LO

Maximum EN Input Logic

Low

0.8

V

R

FPWM

FPWM Pull-down

V

100

200

1000

k

Ω

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