ISL78100 Intersil Corporation, ISL78100 Datasheet - Page 3

• Manufacturer Part Number: ISL78100
• Manufacturer: Intersil Corporation

Electrical Specifications
.
PARAMETER
RLS
V
RLS
FB
VEN/PWM
VEN/PWM
FAULTPUMP
V
f
R
V
dis
t
V
en
T
T
Don’t Care
DIMMING
V
dis
en
SWITCH
t
V
OV FAULT
t
DCUVLO
MODEH
COMPP
COMPN
T
Schottky
DELAY
MODEL
FAULT
BOOST
T
DRIVERH
MODE
DRIVERL
BUCK
f
FAULT
FAULT
TEMP
TRIP
SW
TEMP
HYS
1
0
H
L
Feedback Overvoltage Fault
Switching Frequency
Maximum Recommended PWM
Dimming Frequency
Load Switch Transition Time
Load Switch Driver Impedance Low
Load Switch Driver Impedance High
Fault Timer Period
Start-up Delay
Fault Pin Charge Pump
Boost Mode Threshold
Buck Mode Threshold
Mode Low Threshold
Mode High Threshold
Input Level Applied to TMAX Pin to
Enable Fault Protection
Input Level Applied to TMAX Pin to
Disable Fault Protection
Input Level Applied to TEMP Pin to
Enable Temperature Compensation
Input Level Applied to TEMP Pin to
Disable Temperature Compensation
VFB Positive Temperature
Compensation; VFB/VFBnom
VFB Negative Temperature
Compensation; VFB/VFBnom
Internal Temperature Protection
Threshold
Internal Temperature Protection
Hysteresis
EN/PWM Pin Input Low Threshold
EN/PWM Pin Input High Threshold
V
Internal Schottky Diode for Buck
DC
(VDC - 0.25) > V > 0.25V Standard Mode light level to PWM modulation of EN/PWM input; LED bias current determined by
Undervoltage Lockout
V < (VDC - 0.25)
V < 0.25V
TEMP
DESCRIPTION
3
V
BAT
= V
IN
LEVEL voltage, nominal 1V
Disable temperature compensation
Fixed Bias Mode V
TABLE 1. LIGHT OUTPUT CONTROL, V
= 12V, V
DC
V
Mode = 1, modulation signal applied to EN/PWM
C
EN/PWM = 0
EN/PWM = 3V
Timed LX switching delay
V
BUCK/BOOSTN = GND
BUCK/BOOSTN = V
MODE = GND
MODE = V
VTEMP/VDC = 0.80
VTEMP/VDC = 0.20
LEVEL
BAT
= 5V, T
GATE
= V
= 2nF
ISL78100
FB
A
= 1V, EN/PWM = 3V
IN
= -40°C to +105°C unless otherwise specified. (Continued)
DC
level internally set to 0.4V, independent of V
= 3V
CONDITIONS
DC
OPERATING MODE
DC
= 5.0V
0.94V
0.96V
2/3V
0.85
MIN
220
800
0.5
2.5
40
6
LEVEL
DC
DC
DC
1000
TYP
1.26
0.74
250
100
135
10
30
30
50
25
15
1
0.4V
1/3V
0.9V
MAX
1150
December 17, 2007
1.24
0.08
300
1.2
2.6
50
52
60
23
DC
DC
DC
FN6626.0
UNIT
kHz
kHz
mV
ms
ms
ns
°C
°C
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V
V