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SD42509 Datenblatt(PDF) 2 Page - Silan Microelectronics Joint-stock

Teilenummer SD42509
Bauteilbeschribung  1A WHITE LED DRIVER
PDF  7 Pages
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Hersteller  SILAN [Silan Microelectronics Joint-stock]
Direct Link  http://www.silan.com.cn
Logo SILAN - Silan Microelectronics Joint-stock

SD42509 Datenblatt(HTML) 2 Page - Silan Microelectronics Joint-stock

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SD42509
ABSOLUTE MAXIMUM RATING
Characteristics
Symbol
Ratings
Unit
Supply Voltage
VIN
22
V
Switch Voltage
VSW
-1~VIN+1
V
Boost Voltage
VBS
VSW+6
V
Feedback Voltage
VFB
-0.3~VIN
V
Comp Voltage
VCOMP
-0.3~6
V
LED Voltage
VLED
-0.3~VIN
V
Junction Temperature
Tj
150
°C
Lead Temperature
TL
260
°C
Storage Temperature
TSTG
-65~150
°C
Input Voltage
VIN
6~20
V
Operating Temperature
TOPR
-40~125
°C
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VIN=12V, Tamb=25°C)
Characteristics
Symbol
Test Condition
Min.
Typ.
Max.
Unit
Operating Current
IIN
VFB
≥3.5V
2.0
2.3
mA
Upper Switch Leakage
IL
VSW=0V
0
10
μA
Current Limit
ILIM
1.3
1.6
2.0
A
Maximum Duty Cycle
Dmax
VFB=0V
--
93
--
%
Oscillator Frequency
fosc
250
280
310
kHz
COMP Clamp Voltage
VCOMP
Open without load
1.9
2.2
2.5
V
Switch Transistor on Resistance
RONH
--
0.25
--
Ω
Sampling Voltage Threshold
VFB－VLED
--
88
--
mV
PIN CONFIGURATION
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.4
2009.02.26
Http://www.silan.com.cn
Page 2 of 8



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