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 SGND/PGND:

VIN, ILIM1, ILIM2, KS1, KS2

−0.3V to 32V

SW1, SW2, RSNS1, RSNS2

−0.3 to (V

0.3)V

FB1, FB2, VDD1, VDD2

−0.3V to 6V

PGOOD, COMP1, COMP2, UV

Delay

−0.3V to (VLIN5

+0.3)V

ON/SS1, ON/SS2 (Note 2)

−0.3V to (VLIN5

+0.6)V

CBOOT1 to SW1, CBOOT2 to SW2

−0.3V to 7V

LDRV1, LDRV2

−0.3V to

(VDD+0.3)V

HDRV1 to SW1, HDRV2 to SW2

−0.3V

HDRV1 to CBOOT1, HDRV2 to

CBOOT2

+0.3V

Power Dissipation (T

(Note 3)

1.1W

Ambient Storage Temperature

Range

−65˚C to +150˚C

Soldering Dwell Time, Temperature

(Note 4)

Wave

Infrared

Vapor Phase

4 sec, 260˚C

10sec, 240˚C

75sec, 219˚C

ESD Rating (Note 5)

2kV

Operating Ratings(Note 1)

VIN (VLIN5 tied to VIN)

4.5V to 5.5V

VIN (VIN and VLIN5 separate)

5.5V to 30V

Junction Temperature

−40˚C to +125˚C

Electrical Characteristics

Unless otherwise specified, V

over the specified operating junction temperature range, (-20˚C to +125˚C, if not otherwise specified). Specifications appearing

in plain type are measured using low duty cycle pulse testing with T

by design, test, or statistical analysis.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

System

∆V

Load Regulation

VIN = 15V, V

0.04

%

∆V

Line Regulation

5.5V

≤ VIN ≤ 30V, V

0.04

%

V

FB1_FI2

Feedback Voltage

5.5V

≤ VIN ≤ 30V

1.215

1.238

1.260

V

0˚C to 125˚C

1.217

1.259

-40˚C to 125˚C

1.212

1.261

I

VIN

Input Supply Current

V

5.5V

≤ VIN ≤ 30V

1.0

2.0

mA

Shutdown (Note 8)

V

37

110

µA

VLIN5

VLIN5 Output Voltage

IVLIN5 = 0 to 25mA,

5.5V

≤ VIN ≤ 30V

4.70

5

5.30

V

-40˚C to 125˚C

4.68

5.30

V

CLos

Current Limit

Comparator Offset

(VILIMX −VRSNSX)

mV

I

CL

Current Limit Sink

Current

9

10

11

µA

-40˚C to 125˚C

8.67

11

I

I

ss_SC2

Soft-Start Source

Current

V

0.5

2

5.0

µA

I

I

ss_SK2

Soft-Start Sink Current

V

2

5.2

10

µA

V

V

ON_SS2

Soft-Start On Threshold

0.7

1.12

1.4

V

V

SSTO

Soft-Start Timeout

Threshold

(Note 9)

3.3

V

I

sc_uvdelay

UV_DELAY Source

Current

UV-DELAY = 2V

2

5

9

µA

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