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參數資料
| 型號： | CAT4137TD |
| 元件分類： | LED驅動器 |
| 英文描述： | CMOS Boost Converter- White LED Driver |
| 中文描述： | 的CMOS升壓轉換器，白光LED驅動器 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 504K |
| 代理商： | CAT4137TD |
CAT4137
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1 of 14
Doc. 5012 , Rev. A
CMOS Boost Converter - White LED Driver
Features
Drives up to 5 White LEDs from 3V
Power Efficiency up to 87%
Low Quiescent Ground Current 0.1mA
Adjustable Output Current (up to 30mA)
High Frequency 1MHz Operation
“Zero” current shutdown mode
Operates down to 2V (from two AA batteries)
Soft start power-up
Open LED low power mode
Automatic shutdown at 1.9V (UVLO)
Thermal shutdown protection
Thin SOT23 5-Lead (1mm max height)
Product Description
The CAT4137 is a DC/DC step-up converter that
delivers a regulated output current. Operation at
a constant switching frequency of 1MHz allows
the device to be used with small value external
ceramic capacitors and inductor.
The device drives a string of white LEDs
connected in series and provides the regulated
current to control the LEDs with inherent uniform
brightness and matching. An external resistor R1
sets the output current and allows up to 30mA
current to be supported over a wide range of
input supply voltages from 2.2V to 5.5V, making
the device ideal for battery-powered applications.
LED dimming can be done by using a DC
voltage, a logic signal, or a pulse width
modulation (PWM) signal. The shutdown control
pin allows the device to be placed in power-down
mode with “zero” quiescent current.
In addition to thermal protection and overload
current limiting, the device also enters a very low
power operating mode during “Open LED” fault
conditions. The device is housed in a low profile
(1mm max height) 5-lead thin SOT23 package for
space critical applications.
Applications
LCD Backlighting
Cellular Phones
Handheld Devices
Digital Cameras
Ordering Information
Part Number
Package
Quantity
per Reel
3000
3000
Package
Marking
LW
LX
CAT4137TS
CAT4137TD
TSOT23-5
TSOT23-5
Lead Free
1
Note 1: NiPdAu Lead Plating
Pin Configuration
Top View
5-Lead Thin SOT23
1mm max height
Typical Application Circuit
L: Murata LQH32CN220
D: Central CMDSH2-3 (rated 30V)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CAT4137TD-GT3 | 功能描述:LED照明驅動器 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| CAT4137TD-T3 | 功能描述:LED照明驅動器 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 |
| CAT4139 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:22V High Current Boost White LED Driver |
| CAT4139AEVB | 功能描述:BOARD EVALUATION DPP CAT4139A RoHS:是 類別:編程器，開發系統 >> 評估板 - LED 驅動器 系列:* 標準包裝: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:可調光 輸入電壓:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相關產品: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 |
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