ISL97675 Intersil Corporation, ISL97675 Datasheet - Page 7

• Manufacturer Part Number: ISL97675
• Description: 4-Channel LED Driver
• Manufacturer: Intersil Corporation

Electrical Specifications
BOOST
CURRENT SOURCES
PWM INTERFACE
PWM GENERATOR
tDIRECTPWM
ISW_leakage
ΔI
V
PWMHYST
SYMBOL
SWILimit
PWMACC
Eff_peak
VRFPWM
HEADROOM
I
r
OUT
FPWMI
I
FPWM
LEDmax
DS(ON)
D
V
MATCH
D
I
F
V
V
SS
ACC
ISET
MAX
MIN
SW
IH
IL
/ΔV
IN
Internal Boost Switch ON-Resistance
Line Regulation
Boost Maximum Duty Cycle
Boost Minimum Duty Cycle
Boost Switching Frequency
DC Channel-to-Channel Current
Matching
Current Accuracy
Dominant Channel Current Source
Headroom at FBx Pin
Voltage at I
Maximum LED Current per Channel
Guaranteed Range for PWM Input Low
Voltage
Guaranteed Range for PWM Input High
Voltage
PWMI Input Frequency Range
PWMI Input Accuracy
PWMI Input Allowable Jitter Hysteresis
Voltage at RFPWM pin
Direct PWM Minimum On Time
Boost FET Current Limit
Soft-Start
Peak Efficiency
SW Leakage Current
PWM Dimming Frequency Range
7
SET
PARAMETER
Pin
All specifications below are tested at T
unless otherwise noted. Boldface limits apply over the operating temperature range,
-40°C to +85°C. (Continued)
ISL97675
T
100% LED Duty Cycle
V
20mA each, L = 10µH
with DCR 101mΩ,
T
FSW < 0.5 * VDDIO
FSW > 0.5 * VDDIO
FSW < 0.5 * VDDIO
FSW > 0.5 * VDDIO
FSW <0.5 * VDDIO
FSW >0.5 * VDDIO
SW = 45V, EN = 0
R
(I
R
(I
R
(I
4-Channel, V
V
F
RFPWM = 1.5MΩ
RFPWM = 1.5kΩ
Direct PWM Mode
A
A
SW
IN
ISET
ISET
ISET
OUT
OUT
OUT
OUT
= +25°C
= +25°C
= 12V, 48 LEDs,
= 600kHz
CONDITION
= 40V,
= 19.6kΩ,
= 20mA)
= 39.2kΩ,
= 10mA)
= 19.6kΩ,
= 20mA)
IN
= 4.5V,
A
= +25°C; V
(Note 8)
-0.46
1.19
MIN
-1.5
-1.5
-1.5
475
950
100
250
IN
1.5
1.2
1.5
91
82
45
33
= 12V, EN = 3.3V, R
1200
1.22
1.22
TYP
230
600
500
2.2
0.1
14
92
30
50
37
8
www.DataSheet4U.com
(Note 8)
ISET
30,000
+0.46
1280
+1.5
+1.5
+1.5
MAX
16.5
1.24
1.24
640
350
300
2.7
8.5
0.8
10
55
39
= 19.6kΩ,
May 19, 2010
FN7630.0
UNIT
LSB
kHz
kHz
bits
kHz
mΩ
mV
mA
ms
µA
Hz
Hz
ns
%
%
%
%
%
%
%
%
%
A
V
V
V
V