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CAT32RD4-TE7 Datasheet(PDF) 7 Page - Catalyst Semiconductor

No. de pieza CAT32RD4-TE7
Descripción Electrónicos  CMOS White LED Driver
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Fabricante Electrónico  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT32RD4-TE7 Datasheet(HTML) 7 Page - Catalyst Semiconductor

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CAT32
7
Doc No. 5001, Rev. AC
APPLICATION INFORMATION
Inductor Selection and Efficiency
Inductor vendors are shown below. Contact the manufacturer for detailed technical data and new product information.
Table 1: Inductor Manufacturers
CAPACITOR SELECTION
Low ESR (equivalent series resistance) capacitors should
be used at the output to minimize the output ripple
voltage. The low ESR and small package options
available with multilayer ceramic capacitors make them
excellent choices. The X5R and X7R capacitor types are
preferred because they retain their capacitance over
wider voltage and temperature ranges than the Y5V or
Z5U types. A 1.0
µF or 2.2µF output capacitor is
recommended for most applications.
The voltage rating of the output capacitor C2 depends on
the number of LEDs driven in series. A 10V ceramic
capacitor is recommended when driving two LEDs. A
16V ceramic capacitor is recommended when driving 3
or 4 LEDs.
Low profile ceramic capacitors with a 1mm maximum
height/thickness are available for designs height
requirements. Ceramic capacitors also make a good
choice for the input capacitor, which should be mounted
as close as possible to the CAT32. A 2.2
µF or 4.7µF
input capacitor is recommended. Table 2 shows a list of
several ceramic capacitor manufacturers. Consult the
manufacturers for detailed information as new products
and package options are introduced regularly.
Table 2: Ceramic Capacitor Manufacturers
Supplier
Phone
Web
Taiyo Yuden
408.573.4150
www.t-yuden.com
Murata
814.237.1431
www.murata.com
Kemet
408.986.0424
www.kemet.com
Inductor
L (
µH)
Maximum
Maximum
Vendor
Web
DCR (m
Ω)
Height (mm)
ELJEA4R7
4.7
180
2.2
Panasonic
ELJEA6R8
6.8
250
2.2
714.373.7334
www.panasonic.com
LQH3C4R7M24,
4.7
260
2.2
LQH32CN4R7M11
Murata
LQH3C100K24,
10
300
2.2
770.436.1300
www.murata.com
LQH32CN100K11
LB2016B4R7
4.7
250
2.0
Taiyo Yuden
LB2016B100
3.8
350
2.0
408.573.4150
www.t-yuden.com
CMD4D06-4R7
4.7
216
0.8
CMD4D06-6R8
6.8
296
0.8
Sumida
CLQ4D10-4R7
4.7
162
1.2
847.956.0666
www.sumida.com
CLQ4D10-6R8
6.8
195
1.2


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