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参数资料
| 型号： | CAT32TDI-GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 7/11页 |
| 文件大小： | 0K |
| 描述： | IC WHITE LED DRIVER TSOT-23-6 |
| 标准包装： | 3,000 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 800kHz ~ 1.6MHz |
| 电源电压： | 2 V ~ 7 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 供应商设备封装： | TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
CAT32
Application Information
Inductor Selection and Efficiency
Inductor vendors are shown below. Contact the manufacturer for detailed technical data and new product information.
Table 5. INDUCTO R MANUFACTURERS
Maximum
Inductor
ELJEA4R7
ELJEA6R8
LQH3C4R7M24,
LQH32CN4R7M11
LQH3C100K24,
LQH32CN100K11
LB2016B4R7
LB2016B100
CMD4D06 ? 4R7
CMD4D06 ? 6R8
CLQ4D10 ? 4R7
CLQ4D10 ? 6R8
L ( m H)
4.7
6.8
4.7
10
4.7
3.8
4.7
6.8
4.7
6.8
Maximum DCR (m W )
180
250
260
300
250
350
216
296
162
195
Height (mm)
2.2
2.2
2.2
2.2
2.0
2.0
0.8
0.8
1.2
1.2
Vendor
Panasonic
714.373.7334
Murata
770.436.1300
Taiyo Yuden
408.573.4150
Sumida
847.956.0666
Web
www.panasonic.com
www.murata.com
www.t ? yuden.com
www.sumida.com
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 m F or
2.2 m F output capacitor is recommended for most
applications.
The voltage rating of the output capacitor C2 depends on
Diode Selection
Schottky diodes, with their low forward voltage drop and
fast switching speed, are the ideal choice for high efficiency
applications. Table 7 shows several different Schottky
diodes that work well with the CAT32. Make sure that the
diode has a voltage rating greater than the output voltage.
The diode conducts current only when the power switch is
turned off (typically less than one ? third the time), so a 0.4 A
or 0.5 A diode will be sufficient for most designs.
Table 7. SCHOTTKY DIOD E SUPPLIERS
the number of LEDs driven in series. A 10 V ceramic
capacitor is recommended when driving two LEDs. A 16 V
ceramic capacitor is recommended when driving 3 or 4
LEDs.
Table 6. CERAMIC CAPACITOR MANUFACTURERS
MBR0520
MBR0530 s
MBR0540
ZHCS400
Part
Supplier
ON Semiconductor
www.onsemi.com
800.282.9855
Zetex
Supplier
Phone
Web
Taiyo Yuden
Murata
Kemet
408.573.4150
814.237.1431
408.986.0424
www.t ? yuden.com
www.murata.com
www.kemet.com
LED Current Programming
The LED current is programmed with a single resistor
connected to the RSET pin. The RSET pin is internally
regulated to 100 mV, which sets the current flowing out of
Low profile ceramic capacitors with a 1 mm 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 m F or 4.7 m F input capacitor is
recommended. Table 6 shows a list of several ceramic
this pin, ISET, equal to 100 mV/RSET. The CAT32 regulates
the current into the LED pin, I LED , to 225 times the value of
I SET . For the best accuracy, a 1% or better resistor is
recommended. Table 8 shows several typical 1% R SET
values.
capacitor manufacturers. Consult the manufacturers for
detailed information as new products and package options
are introduced regularly.
http://onsemi.com
7
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相关代理商/技术参数 |
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|---|---|
| CAT32TDIT3 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:CMOS White LED Driver |
| CAT32TDI-T3 | 功能描述:LED照明驱动器 2-7V Adj Curr 40mA RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| CAT32TDI-TE7 | 制造商:ON Semiconductor 功能描述:LED DRIVER, BOOST, 4 LED, SERIES - Tape and Reel 制造商:ON Semiconductor 功能描述:IC LED DRIVER WHITE SMD SOT-23-6 |
| CAT32ZD4-GT3 | 功能描述:LED照明驱动器 LED Driver Boost 4 LED series RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| CAT33C101 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:1K BIT SERIAL E2PROM |
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