ISL97632IRT26ZTK datasheet(2/9 Pages) INTERSIL

Part #	ISL97632IRT26ZTK

Description	LED Driver with 1-Wire Dimming

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Manufacturer	INTERSIL [Intersil Corporation]

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2

FN9239.3

March 22, 2010

Absolute Maximum Ratings (TA = +25°C)

Thermal Information

Input Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V

LX Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V

FBSW Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V

All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V

Operating Conditions

Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C

Thermal Resistance (Typical, Note 1, 2)

θJA (°C/W) θJC (°C/W)

TDFN Package . . . . . . . . . . . . . . . . . .

70

10.5

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +125°C

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C

Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and

result in failures not covered by warranty.

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed over temperature of -40°C to +85°C unless otherwise stated. Typical values are for

information purposes only at TJ = TC = TA

= +25°C.

NOTES:

1.

θ

JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See

Tech Brief TB379.

2. For

θJC, the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications

VIN = VEN = 3V. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified.

Temperature limits established by characterization and are not production tested.

PARAMETER

DESCRIPTION

CONDITION

MIN

TYP

MAX

UNIT

VIN

Supply Voltage

2.4

5.5

V

IIN

Supply Current

EN = 3V, enabled, not switching

0.8

1.5

mA

EN = 0V, disabled

1

µA

Fsw

Switching Frequency

1,300

1,450

1,600

kHz

DMAX

Maximum Duty Cycle

90

95

%

ILIM

LX Current

400

470

mA

RSW(LX)

LX Switch ON-Resistance

ILX = 100mA

900

m

Ω

ILEAK

LX Switch Leakage Current

VLX = 28V

1

µA

VFB

Feedback Voltage

Serial interface setting = 15 (center)

90

95

100

mV

Serial interface setting = S (S = 0,1 ..31)

9.8 + 5.68 x S

mV

Serial interface setting = 0

9.8

mV

IFB

FB Pin Bias Current

VFB = 95mV

1

µA

RSW(FBSW)

FBSW Switch ON-Resistance

10

Ω

VDIODE

Schottky Diode Forward

Voltage

IDIODE = 100mA, TA = +25°C

600

850

mV

OVP

Overvoltage Protection

ISL97632IRT14Z

14

V

ISL97632IRT18Z

18

V

ISL97632IRT26Z

26

28

V

VIL

Logic Low Voltage

0.6

V

VIH

Logic High Voltage

1.5

V

tLOGIC1

Timing Range for Logic 1

SDIN = low

15

45

µs

tLOGIC0

Timing Range for Logic 0

SDIN = low

90

120

µs

tLOGIC-LOAD

Timing Range for Load

SDIN = low

215

µs

tLOGIC-HIGH

Minimum Valid SDIN High

Time

SDIN = high

3

µs

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