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MX841 Fiches technique(PDF) 2 Page - IXYS Corporation

No de pièce MX841
Description  White LED Step-Up Converter
Download  6 Pages
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Fabricant  IXYS [IXYS Corporation]
Site Internet  http://www.ixys.com
Logo IXYS - IXYS Corporation

MX841 Fiches technique(HTML) 2 Page - IXYS Corporation

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MX841
IXYS
Absolute Maximum Ratings (Voltages with respect to GND=0V)
Parameter
Min
Max
Unit
VDD Supply Voltage
-0.4
+6.5
V
CTRL Voltage
GND-0.4
VDD+0.4
V
ISENSE Voltage
GND-0.4
VDD+0.4
V
SW Voltage
-0.4
+24.0
V
OVD Voltage
-0.4
+24.0
V
Operating Ambient Temperature Range
-40
+85
C
o
Storage Temperature Range
-55
+150
C
o
Operating Junction Temperature Range
-40
+125
C
o
Standard SOIC θJA = 114°C/W
775
mW
Power Dissipation
TA = 27°C
Exposed Pad SOIC θJA = 50°C/W
1.75
W
ESD Warning
ESD (electrostatic discharge) sensitive device. Although the MX841 features proprietary ESD protection circuitry,
permanent damage may be sustained if subjected to high energy electrostatic discharges. Proper ESD precautions
are recommended to avoid performance degradation or loss of functionality.
DC Electrical Characteristics
VDD=3.0V, RSENSE=5Ω, VCTRL=1.0V, L=6.8µH, CBYP=1µF, TA = -40
oC to +85oC, Typical Values at +25oC
Unless otherwise specified
Parameter
Condition
Min
Typ
Max
Unit
Supply Voltage
TA = 25
oC
1.1
5.5
V
Supply Current Overvoltage
Not Switching: VCTRL = 260mV
VRSENSE > 13 X VCTRL
0.5
0.8
Supply Current Operating
Switching: VCTRL= VDD, VRSENSE=GND
2
mA
TA = +25
oC
6
µA
Sleep Current
VCTRL < 100mV
TA = +85
oC
7
µA
CTRL Bias Current
-10
µA
ISENSE Bias Current
-7
µA
VCTRL >260mV
20
µA
OVD Bias Current
OVD = 18V
VCTRL = GND
0
OVD Rising
22
V
Over Voltage Threshold
OVD Falling
18.5
V
CTRL / VRSENSE
13
V/V
VCTRL Rising
260
mV
VCTRL Sleep Mode
VCTRL Falling
100
mV
VSW = 0.1V
1.9
SW On Resistance
VSW = 0.5V
2.2
VDD=1.2V, L=33µH
30
mA
Switch Current
VDD=5.5V, L=2.5µH
2
A
SW Voltage Range
VDD -
VSCHOTTKY
20
V
TA = +25
oC
0.1
µA
SW Leakage Current
OVD = VSW = 18V
TA = +85
oC
0.3
µA
VCTRL
0
VDD
V
Absolute
Maximum
Ratings
are
stress ratings. Stresses in excess of
these ratings can cause permanent
damage to the device. Functional
operation of the device at these or
any other conditions beyond those
indicated in the operational sections
of this data sheet is not implied.
Exposure
of
the
device
to
the
absolute maximum ratings for an
extended period may degrade the
device and affect its reliability.
Preliminary
MX841
2
03/10/05
Drawing No. 17023
www.ixys.net


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