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參數(shù)資料
| 型號： | CAT4137 |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | CMOS Boost Converter- White LED Driver |
| 中文描述： | 的CMOS升壓轉(zhuǎn)換器，白光LED驅(qū)動器 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大小： | 504K |
| 代理商： | CAT4137 |
CAT4137
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7 of 14
Doc. 5012 , Rev. A
PIN DESCRIPTION
VIN
is the supply input for the internal logic.
The device is compatible with supply voltages
down to 2.2V and up to 5.5V. A small bypass
ceramic capacitor of 1μF is recommended
between the VIN and GND pins near the
device. The under-voltage lockout (UVLO)
circuitry will place the device into an idle
mode (not switching) whenever the supply
falls below 1.9V.
SHDN*
is the shutdown logic input. When the
pin voltage is taken below 0.4V, the device
immediately enters shutdown mode, drawing
nearly zero current. At voltages greater than
1.5V, the device becomes fully enabled and
operational.
GND
is the ground reference pin. This pin
should be connected directly to the ground
plane on the PCB.
Pin #
1
2
3
4
5
SW
pin is the drain terminal of the internal low
resistance power switch. The inductor and the
Schottky diode anode should be connected to the
SW pin. Traces going to the SW pin should be as
short as possible with minimum loop area. This pin
contains over-voltage circuitry which becomes
active above 24V. In the event of an “Open-Led”
fault condition, the device will enter a low power
mode and the SW pin will be clamped to
approximately 30V.
FB
feedback pin is regulated at 0.3V. A resistor
connected between the FB pin and ground sets
the LED current according to the formula:
I
LED
= 0.3V/R1
The lower LED cathode is connected to the FB pin.
Name
SW
GND
FB
SHDN*
VIN
Function
Switch pin. This is the drain of the internal power switch.
Ground pin. Connect the pin to the ground plane.
Feedback pin. Connect to the last LED cathode.
Shutdown pin (Logic Low). Set high to enable the driver.
Power Supply input.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT4137AEVB | 功能描述:BOARD EVALUATION DPP CAT4137A RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - LED 驅(qū)動器 系列:* 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® 電流 - 輸出 / 通道:20mA 輸出及類型:1，非隔離 輸出電壓:17V 特點:可調(diào)光 輸入電壓:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相關(guān)產(chǎn)品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| CAT4137TD | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:CMOS Boost Converter - White LED Driver |
| CAT4137TD-GT3 | 功能描述:LED照明驅(qū)動器 LED Driver,Boost 5 LED,series RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| CAT4137TD-T3 | 功能描述:LED照明驅(qū)動器 Boost Converter White LED RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| CAT4137TS | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:CMOS Boost Converter - White LED Driver |
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