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CAT37EKK PDF预览

CAT37EKK

更新时间: 2024-02-12 03:39:54
品牌 Logo 应用领域
安森美 - ONSEMI 驱动器转换器升压转换器
页数 文件大小 规格书
11页 135K
描述
LED DISPLAY DRIVER, PDSO5, SOT-23, 5 PIN

CAT37EKK 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOT-23
包装说明:VSSOP,针数:5
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.04
接口集成电路类型:LED DISPLAY DRIVERJESD-30 代码:R-PDSO-G5
JESD-609代码:e3长度:2.9 mm
湿度敏感等级:1复用显示功能:NO
功能数量:1区段数:1
端子数量:5最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:VSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1 mm
最大供电电压:7 V最小供电电压:2.5 V
标称供电电压:3 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:1.625 mm
Base Number Matches:1

CAT37EKK 数据手册

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CAT37  
CMOS White LED Driver  
Boost Converter  
Description  
The CAT37 is a DC/DC step up converter that delivers a regulated  
output current. Operation at a constant switching frequency of  
1.2 MHz allows the device to be used with very small value external  
inductor and ceramic capacitors.  
http://onsemi.com  
The CAT37 is targeted to drive multiple white lightemitting diodes  
(LEDs) connected in series and provides the necessary regulated current  
to control the brightness and the color purity. An external resistor R1  
controls the output current level. LED currents of up to 40 mA can be  
supported over a wide range of input supply voltages from 2.5 V to 7 V,  
making the device ideal for batterypowered applications.  
A high voltage output stage allows up to 4 White LEDs to be driven  
in series. Series drive provides inherent current matching.  
LED dimming can be done by using a DC voltage, a logic signal, or  
a pulse width modulation (PWM) signal. The shutdown input pin  
allows the device to be placed in powerdown mode with “near zero”  
quiescent current.  
5
1
TSOT23  
TD SUFFIX  
CASE 419AE  
PIN CONNECTIONS  
1
VIN  
SW  
GND  
FB  
SHDN  
In addition to overcurrent limiting protection, the device also  
includes detection circuitry to ensure protection against opencircuit  
load fault conditions.  
The device is available in a low profile (1 mm max height) 5lead  
TSOT23 package.  
(Top View)  
1 mm Maximum Height  
q
= 250°C/W (free air)  
JA  
MARKING DIAGRAM  
Features  
Low Quiescent Ground Current (0.5 mA Typical)  
Power Efficiency Over 80%  
Compatible Pinout with LT1937  
LMYM  
ULYM  
Adjustable Output Current (up to 40 mA)  
High Frequency 1.2 MHz Operation  
Input Voltage Operation down to 2.5 V  
Low Resistance (0.5 W) Power Switch  
Drives up to 4 White LEDs in Series  
Shutdown Current Less than 1 mA  
LM = CAT37TDIT3  
UL = CAT37TDIGT3  
Y = Production Year (Last Digit)  
M = Production Month (19, A, B, C)  
ORDERING INFORMATION  
Load Fault Protection Against Opencircuits  
Low Value External Components  
Device  
Package  
Shipping  
CAT37TDIT3  
(Note 1)  
TSOT23  
(PbFree)  
3,000/  
Tape & Reel  
Low Profile (1 mm) TSOT23 5lead Package  
These Devices are PbFree, Halogen Free/BFR Free and are RoHS  
CAT37TDIGT3  
(Note 2)  
TSOT23  
(PbFree)  
3,000/  
Tape & Reel  
Compliant  
1. MatteTin Plated Finish (RoHScompliant).  
2. NiPdAu Plated Finish (RoHScompliant).  
Applications  
Color LCD and Keypad Backlighting  
Cellular Phones  
Handheld Terminals  
Digital Cameras  
PDAs/Games  
Portable MP3 Players  
©
Semiconductor Components Industries, LLC, 2010  
1
Publication Order Number:  
February, 2010 Rev. 21  
CAT37/D  
 

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