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ISL97634 Datasheet(PDF) 2 Page - Intersil Corporation

Part No. ISL97634
Description  White LED Driver with Wide PWM Dimming Range
Download  10 Pages
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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ISL97634 Datasheet(HTML) 2 Page - Intersil Corporation

 
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FN6264.2
April 10, 2007
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
θJA (°C/W) θJC (°C/W)
TDFN Package (Notes 1, 2). . . . . . . . .
77
12
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . . . . . . . +300°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed over temperature of -40°C to +85°C unless otherwise stated. Typ values are for
information purposes only at TJ = TC = TA = +25°C.
NOTE:
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 = VPWM/EN = 3V
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
VIN
Supply Voltage
2.4
5.5
V
IIN
Supply Current
PWM/EN = 3V, enabled, not switching
0.8
1.5
mA
PWM/EN = 0V, disabled
1
μA
fSW
Switching Frequency
1,300
1,450
1,600
kHz
DMAX
Maximum Switching 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
0.01
1
μA
VFB
Feedback Voltage
90
95
100
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
ISL97634IRT14Z
14
V
ISL97634IRT18Z
18
V
ISL97634IRT26Z
26
28
V
VIL
Logic Low Voltage of
PWM/EN
0.6
V
VIH
Logic High Voltage of
PWM/EN
1.5
V
ISL97634


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