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ISL78100ARZ-T Datasheet(PDF) 3 Page - Intersil Corporation

Part # ISL78100ARZ-T
Description  High Power LED Driver
Download  19 Pages
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL78100ARZ-T Datasheet(HTML) 3 Page - Intersil Corporation

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3
FN6626.1
December 24, 2013
.
FBOV FAULT Feedback Overvoltage Fault
VLEVEL = 1V, EN/PWM = 3V
220
250
300
mV
fSW
Switching Frequency
800
1000
1150
kHz
fDIMMING
Maximum Recommended PWM
Dimming Frequency
Mode = 1, modulation signal applied to EN/PWM
10
kHz
tSWITCH
Load Switch Transition Time
CGATE = 2nF
100
ns
RLSDRIVERL Load Switch Driver Impedance Low
EN/PWM = 0
30
50
RLSDRIVERH Load Switch Driver Impedance High
EN/PWM = 3V
30
52
tFAULT
Fault Timer Period
40
50
60
ms
tDELAY
Start-up Delay
Timed LX switching delay
0.85
1
1.24
ms
VFAULTPUMP Fault Pin Charge Pump
VBAT = VIN = 3V
6
V
VBOOST
Boost Mode Threshold
BUCK/BOOSTN = GND
0.4VDC
V
VBUCK
Buck Mode Threshold
BUCK/BOOSTN = VDC
0.94VDC
V
VMODEL
Mode Low Threshold
MODE = GND
1/3VDC
V
VMODEH
Mode High Threshold
MODE = VDC
2/3VDC
V
enFAULT
Input Level Applied to TMAX Pin to
Enable Fault Protection
0.9VDC
V
disFAULT
Input Level Applied to TMAX Pin to
Disable Fault Protection
0.96VDC
V
enTEMP
Input Level Applied to TEMP Pin to
Enable Temperature Compensation
0.5
V
disTEMP
Input Level Applied to TEMP Pin to
Disable Temperature Compensation
0.08
V
TCOMPP
VFB Positive Temperature
Compensation; VFB/VFBnom
VTEMP/VDC = 0.80
1.26
TCOMPN
VFB Negative Temperature
Compensation; VFB/VFBnom
VTEMP/VDC = 0.20
0.74
TTRIP
Internal Temperature Protection
Threshold
135
°C
THYS
Internal Temperature Protection
Hysteresis
25
°C
VEN/PWML
EN/PWM Pin Input Low Threshold
1.2
V
VEN/PWMH
EN/PWM Pin Input High Threshold
2.5
V
VDCUVLO
VDC Undervoltage Lockout
2.6
V
RSchottky
Internal Schottky Diode for Buck
15
23
Electrical Specifications
VBAT = VIN = 12V, VDC = 5V, TA = -40°C to +105°C unless otherwise specified. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
TABLE 1. LIGHT OUTPUT CONTROL, VDC = 5.0V
MODE
TEMP
OPERATING MODE
1
(VDC - 0.25) > V > 0.25V Standard Mode light level to PWM modulation of EN/PWM input; LED bias current determined by
LEVEL voltage, nominal 1V
Don’t Care
V < 0.25V
Disable temperature compensation
0
V < (VDC - 0.25)
Fixed Bias Mode VFB level internally set to 0.4V, independent of VLEVEL
ISL78100


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