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LM3224MMX-ADJ/NOPB PDF预览

LM3224MMX-ADJ/NOPB

更新时间： 2024-11-27 11:11:47
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
28页 1498K
描述
615kHz/1.25MHz 升压 PWM 直流/直流转换器 | DGK | 8

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LM3224MMX-ADJ/NOPB 数据手册

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LM3224  
www.ti.com  
SNVS277C –DECEMBER 2004–REVISED MARCH 2013  
LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter  
Check for Samples: LM3224  
1
FEATURES  
DESCRIPTION  
The LM3224 is a step-up DC/DC converter with a  
0.15Ω (typ.), 2.45A (typ.) internal switch and pin  
selectable operating frequency. With the ability to  
convert 3.3V to multiple outputs of 8V, -8V, and 23V,  
the LM3224 is an ideal part for biasing TFT displays.  
With the high current switch it is also ideal for driving  
high current white LEDs for flash applications. The  
LM3224 can be operated at switching frequencies of  
615kHz and 1.25MHz allowing for easy filtering and  
low noise. An external compensation pin gives the  
user flexibility in setting frequency compensation,  
which makes possible the use of small, low ESR  
ceramic capacitors at the output. An external soft-  
start pin allows the user to control the amount of  
inrush current during start up. The LM3224 is  
available in a low profile 8-lead VSSOP package.  
2
•
•
Operating Voltage Range of 2.7V to 7V  
615kHz/1.25MHz Pin Selectable Frequency  
Operation  
•
•
•
Over Temperature Protection  
Optional Soft-Start Function  
8-Lead VSSOP Package  
APPLICATIONS  
•
•
•
•
•
•
TFT Bias Supplies  
Handheld Devices  
Portable Applications  
GSM/CDMA Phones  
Digital Cameras  
White LED Flash/Torch Applications  
Typical Application Circuit  
VIN  
L
D
5
SW  
6
3
7
V
IN  
FSLCT  
R
FB1  
LM3224  
SHDN  
VOUT  
2
8
FB  
SS  
Battery or  
Power Source  
V
C
GND  
C
IN  
4
1
C
OUT  
R
R
C
FB2  
Optional  
C
SS  
C
C
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2004–2013, Texas Instruments Incorporated  
1234567...28

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LM3224MMX-ADJ/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM3224MM-ADJ/NOPB TI

类似代替

 615kHz/1.25MHz 升压 PWM 直流/直流转换器 | DGK | 8 | -4

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