參數(shù)資料
型號： MX841
廠商： IXYS Corporation
英文描述： White LED Step-Up Converter
中文描述： 白光LED升壓轉(zhuǎn)換器
文件頁數(shù)： 2/6頁
文件大?。?/td> 202K
代理商： MX841
MX841
IXYS
Absolute Maximum Ratings
(Voltages with respect to GND=0V)
Parameter
V
DD
Supply Voltage
CTRL Voltage
I
SENSE
Voltage
SW Voltage
OVD Voltage
Operating Ambient Temperature Range
Storage Temperature Range
Operating Junction Temperature Range
Standard SOIC
θ
JA
= 114°C/W
Power Dissipation
T
A
= 27°C
Exposed Pad SOIC
θ
JA
= 50°C/W
Min
-0.4
G
ND
-0.4
G
ND
-0.4
-0.4
-0.4
-40
-55
-40
Max
+6.5
V
DD
+0.4
V
DD
+0.4
+24.0
+24.0
+85
+150
+125
775
1.75
Unit
V
V
V
V
V
C
o
C
o
C
o
mW
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
V
DD
=3.0V, R
SENSE
=5
, V
CTRL
=1.0V, L=6.8μH, C
BYP
=1μF, T
A
= -40
o
C to +85
o
C, Typical Values at +25
o
C
Unless otherwise specified
Parameter
Condition
Supply Voltage
T
A
= 25
o
C
Not Switching: V
CTRL
= 260mV
Supply Current Operating
Switching: V
CTRL
= V
DD,
V
RSENSE
=GND
Min
1.1
Typ
Max
5.5
Unit
V
Supply Current Overvoltage
V
RSENSE
> 13 X V
CTRL
0.5
0.8
2
22
mA
T
A
= +25
o
C
T
A
= +85
o
C
6
7
-7
20
0
13
260
100
1.9
2.2
30
2
μA
μA
μA
μA
μA
V
V
V/V
mV
mV
mA
A
Sleep Current
V
CTRL
< 100mV
CTRL Bias Current
I
SENSE
Bias Current
-10
18.5
V
DD
-
V
SCHOTTKY
0
V
CTRL
>260mV
V
CTRL
= GND
OVD Bias Current
OVD
= 18V
OVD
Rising
OVD Falling
V
CTRL
Rising
V
CTRL
Falling
V
SW
= 0.1V
V
SW
= 0.5V
V
DD
=1.2V, L=33μH
V
DD
=5.5V, L=2.5μH
Over Voltage Threshold
CTRL / V
RSENSE
V
CTRL
Sleep Mode
SW On Resistance
Switch Current
SW Voltage Range
20
V
T
A
= +25
o
C
T
A
= +85
o
C
0.1
0.3
μA
μA
V
SW Leakage Current
OVD
= V
SW
= 18V
V
CTRL
V
DD
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
Drawing No. 17023
03/10/05
www.ixys.net
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