ISL97673IRZ-TK View Datasheet(PDF) - Renesas Electronics
Part Name
Description
Manufacturer
ISL97673IRZ-TK Datasheet PDF : 28 Pages
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ISL97673
Electrical Specifications
All specifications below are tested at TA = +25°C; VIN = 12V, EN/PWM = 5V, RSET = 20.1k, unless otherwise noted.
Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
SYMBOL
CONDITION
MIN
(Note 8)
TYP
MAX
(Note 8) UNIT
Guaranteed Range for EN Input High
Voltage
ENHi
1.8
V
EN/PWMI Low Time Before Shut-Down
BOOST
tENLow
30.5
ms
Boost FET Current Limit
Internal Boost Switch ON-Resistance
Soft-Start
SWILimit
rDS(ON)
SS
TA = +25°C
100% LED Duty Cycle
1.5
2.0
2.7
A
235
300
m
7
ms
Peak Efficiency
Eff_peak
VIN = 12V, 72 LEDs, 20mA
92.9
%
each, L = 10µH with DCR
101mΩTA = +25°C
VIN = 12V, 60 LEDs, 20mA
90.8
%
each, L = 10µH with DCR
101mΩTA = +25°C
Line Regulation
IOUT/VIN
0.1
%
Boost Maximum Duty Cycle
DMAX
FSW = 1, 600kHz
90
%
FSW = 0, 1.2MHz
81
Boost Minimum Duty Cycle
DMIN
FSW = 1, 600kHz
FSW = 0, 1.2MHz
9.5
%
17
Lx Frequency High
Lx Frequency Low
Lx Leakage Current
fOSC_hi
fOSC_lo
ILX_leakage
FSW = 1, 600kHz
FSW = 0, 1.2MHz
LX = 45V, EN = 0
475
0.97
600
1.14
640
1.31
10
kHz
MHz
µA
FAULT DETECTION
Short Circuit Threshold Accuracy
VSC
Reg0x08, SC[1:0] = 01
3.15
3.6
4.3
V
Reg0x08, SC[1:0] = 10
4.2
4.8
5.4
V
Reg0x08, SC[1:0] = 11
5.2
5.85
6.6
V
Temperature Shutdown Threshold
Temp_shtdwn
150
°C
Temperature Shutdown Hysteresis
Temp_Hyst
23
°C
Overvoltage Limit on OVP Pin
OVP Short Detection Fault Level
CURRENT SOURCES
VOVPlo
OVPfault
1.19
1.25
V
400
mV
DC Channel-to-Channel Current
Matching
Current Accuracy
Dominant Channel Current Source
Headroom at CHx Pin
Dominant Channel Current Sink
Headroom Range at CHx Pin
Voltage at RSET Pin
Maximum LED Current per Channel
PWM GENERATOR
IMATCH
RSET = 20.1kΩ,
Reg0x00 = 0xFF
(IOUT = 20mA)
±0.7
±1.0
%
IACC
-1.5
+1.5
%
VHEADROOM
ILED = 20mA
TA = +25°C
500
mV
(Note 11)
VHEADROOM_RANGE ILED = 20mA
TA = +25°C
90
mV
VRSET
RSET = 20.1kΩ
1.2
1.22
1.24
mV
ILEDmax
VIN = 12V, VOUT = 45V,
40
mA
Fsw=1.2MHz, TA = +25°C
FN7633 Rev.3.00
Sep 19, 2017
Page 6 of 28
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