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ISL97678 데이터시트(PDF) 7 Page - Intersil Corporation

부품명 ISL97678
상세설명  8-Channel 45V 50mA LED Driver
PDF  18 Pages
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제조업체  INTERSIL [Intersil Corporation]
홈페이지  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL97678 데이터시트(HTML) 7 Page - Intersil Corporation

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7
FN6998.1
November 5, 2009
VISET
Voltage at ISET Pin
1.18
1.21
1.24
V
ILEDmax
Maximum LED Current per Channel
LED config = 8P10S
with VF = 3.4V and
VIN = 11V
50
mA
PWM GENERATOR
FPWM
Generated PWM Frequency
RFPWM = 330kΩ
180
200
220
Hz
RFPWM = 3.3kΩ
18
20
22
kHz
Dimming Range
PWM Dimming Duty Cycle Limits (Note 9)
fPWM ≤ 30kHz
0.4
100
%
VFSW
fSW Voltage
RFSW = 33kΩ
1.18
1.21
1.24
V
FPWMI
PWMI Input Frequency Range (Note 9)
200
20k
Hz
VFPWM
VFPWM Voltage
RFPWM = 3.3kΩ
1.18
1.21
1.25
V
NOTES:
7. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established
by characterization and are not production tested.
8. At maximum VIN of 26V, minimum VOUT is 28V. Minimum VOUT can be lower at lower VIN
9. Limits established by characterization and are not production tested.
Electrical Specifications All specifications below are characterized at TA = -40°C to +85°C; VIN = 12V, /SHUT = 5V,
ISET = 36kΩ, unless otherwise noted. Boldface limits apply over the operating
temperature range, -40°C to +85°C. (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN
(Note 7) TYP
MAX
(Note 7) UNIT
Typical Performance Curves
FIGURE 3. EFFICIENCY vs VIN vs TEMPERATURE AT
50mA
FIGURE 4. EFFICIENCY vs VIN vs TEMPERATURE AT
20mA
70
75
80
85
90
95
100
0
5
10
15
20
25
30
VIN (V)
50mA
8P11S
fSW = 600kHz
0°C
+25°C
+85°C
-40°C
70
75
80
85
90
95
100
0
5
10
15
20
25
30
VIN (V)
20mA
8P11S
fSW = 600kHz
0°C
+25°C
+85°C
-40°C
ISL97678



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