LM3224

更新时间： 2024-02-26 05:24:27

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器
页数	文件大小	规格书
18页	916K
描述
615kHz/1.25MHz Step-up PWM DC/DC Converter

阅读下载

中文翻译

获取价格

如果您发现信息不准确，欢迎纠错

LM3224 数据手册

December 2004

LM3224

615kHz/1.25MHz Step-up PWM DC/DC Converter

General Description

Features

n Operating voltage range of 2.7V to 7V

The LM3224 is a step-up DC/DC converter with a 0.15Ω

(typ.), 2.45A (typ.) internal switch and pin selectable operat-

ing 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 applica-

tions. 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 MSOP package.

n 615kHz/1.25MHz pin selectable frequency operation

n Over temperature protection

n Optional soft-start function

n 8-Lead MSOP package

Applications

n TFT Bias Supplies

n Handheld Devices

n Portable Applications

n GSM/CDMA Phones

n Digital Cameras

n White LED Flash/Torch Applications

Typical Application Circuit

20097631

DS200976

www.national.com

12 3 4 5 6 7...18

中文翻译

下载PDF

型号	品牌	获取价格	描述	数据表
LM3224_05	NSC	获取价格	615kHz/1.25MHz Step-up PWM DC/DC Converter
LM3224MM-ADJ	NSC	获取价格	615kHz/1.25MHz Step-up PWM DC/DC Converter
LM3224MM-ADJ/NOPB	NSC	获取价格	IC 2.8 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO8, ROHS COMPLIANT, PLASTIC,
LM3224MM-ADJ/NOPB	TI	获取价格	615kHz/1.25MHz 升压 PWM 直流/直流转换器 \| DGK \| 8 \| -4
LM3224MMX-ADJ	NSC	获取价格	615kHz/1.25MHz Step-up PWM DC/DC Converter
LM3224MMX-ADJ/NOPB	TI	获取价格	615kHz/1.25MHz 升压 PWM 直流/直流转换器 \| DGK \| 8
LM322-670.000M	CONNOR-WINFIELD	获取价格	Oscillator
LM322H	NSC	获取价格	Precision Timers
LM322N	NSC	获取价格	Precision Timers
LM322N/B+	ETC	获取价格	Analog Timer Circuit