ISL97671 Intersil, ISL97671 Datasheet - Page 6

• Manufacturer Part Number: ISL97671
• Description: 6-Channel SMBus/I2C or PM Dimming LED Driver
• Manufacturer: Intersil

Electrical Specifications
PARAMETER
BOOST
REFERENCE
FAULT DETECTION
CURRENT SOURCES
PWM GENERATOR
Temp_shtdw
ILX_leakage
Temp_Hyst
ΔI
V
SWILimit
ILEDmax
Eff_peak
OVP
r
OUT
headroom
f
f
I
t
V
V
DS(ON)
OSC_hi
D
OSC_lo
D
MATCH
ENLow
I
V
OVPlo
SS
RSET
ACC
MAX
MIN
n
SC
/ΔV
fault
IN
EN Low Time Before Shut-down
Boost FET Current Limit
Internal Boost Switch ON-resistance
Soft-Start
Peak Efficiency
Line Regulation
Boost Maximum Duty Cycle
Boost Minimum Duty Cycle
Lx Frequency High
Lx Frequency Low
LX Leakage Current
Short Circuit Threshold Accuracy
Temperature Shutdown Threshold
Temperature Shutdown Hysteresis
Overvoltage Limit on OVP Pin
OVP Short Detection Fault Level
DC Channel-to-Channel Current Matching
Current Accuracy
Dominant Channel Current Source
Headroom at CH Pin
Voltage at RSET Pin
Maximum LED Current per Channel
Guaranteed Range for PWM Input Low Voltage
Guaranteed Range for PWM Input High Voltage
6
DESCRIPTION
All specifications below are tested at T
otherwise noted. Boldface limits apply over the operating temperature range, -40°C
to +85°C. (Continued)
ISL97671
T
100% LED Duty Cycle
V
each, L = 10µH with DCR
101mΩ, T
V
each, L = 10µH with DCR
101mΩ, T
FSW = 1, 600kHz
FSW = 0, 1.2MHz
FSW = 1, 600kHz
FSW = 0, 1.2MHz
FSW = 1, 600kHz
FSW = 0, 1.2MHz
LX = 45V, EN = 0V
Reg0x08, SC[1:0] = 01
Reg0x08, SC[1:0] = 10
Reg0x08, SC[1:0]= 11
R
Reg0x00 = 0xFF,
(I
I
T
R
V
Fsw=1.2MHz, T
LED
A
A
IN
IN
SET
SET
IN
OUT
= +25°C
= +25°C
= 12V, 72 LEDs, 20mA
= 12V, 60 LEDs, 20mA
= 12V, V
= 20mA
= 20.1kΩ,
= 20.1kΩ
= 20mA)
CONDITION
A
A
= +25°C
= +25°C
A
OUT
= 25°C; V
A
= 45V,
= +25°C
IN
= 12V, EN = 5V, R
(Note 8) TYP
0.97
3.15
1.19
MIN
475
-1.5
1.5
4.2
5.2
1.2
1.5
90
81
±0.7
92.9
90.8
1.14
5.85
1.22
30.5
235
600
150
400
500
2.0
0.1
3.6
4.8
23
40
7
SET
www.DataSheet4U.com
(Note 8) UNIT
= 20.1kΩ, unless
±1.0
+1.5
MAX
1.31
1.25
1.24
VDD
640
300
4.3
5.4
6.6
0.8
2.7
9.5
17
10
June 24, 2010
FN7631.0
MHz
mΩ
kHz
mV
mV
mV
mA
ms
ms
µA
°C
°C
%
%
%
%
%
%
%
A
V
V
V
V
V
V