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LM3311SQ PDF预览

LM3311SQ

更新时间: 2024-01-18 09:03:27
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器开关运算放大器脉冲
页数 文件大小 规格书
29页 2046K
描述
Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch

LM3311SQ 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:QFN
包装说明:HVQCCN, LCC24,.16SQ,20针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.21
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:7 V
最小输入电压:2.5 V标称输入电压:2.5 V
JESD-30 代码:S-XQCC-N24JESD-609代码:e3
长度:4 mm湿度敏感等级:1
功能数量:1端子数量:24
最高工作温度:125 °C最低工作温度:-40 °C
最大输出电流:2.6 A封装主体材料:UNSPECIFIED
封装代码:HVQCCN封装等效代码:LCC24,.16SQ,20
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BOOST
最大切换频率:1280 kHz温度等级:AUTOMOTIVE
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:4 mm
Base Number Matches:1

LM3311SQ 数据手册

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September 2005  
LM3311  
Step-Up PWM DC/DC Converter with Integrated LDO,  
Op-Amp, and Gate Pulse Modulation Switch  
General Description  
Features  
n Boost converter with a 2A, 0.18switch  
n Boost output voltage adjustable up to 20V  
n Operating voltage range of 2.5V to 7V  
n 660kHz/1.28MHz pin selectable switching frequency  
n Adjustable soft-start function  
The LM3311 is a step-up DC/DC converter integrated with  
an LDO, an Operational Amplifier, and a gate pulse modu-  
lation switch. The boost (step-up) converter is used to gen-  
erate an adjustable output voltage and features a low RDSON  
internal switch for maximum efficiency. The operating fre-  
quency is selectable between 660kHz and 1.28MHz allowing  
for the use of small external components. An external soft-  
start pin enables the user to tailor the soft-start time to a  
specific application and limit the inrush current. The LDO  
also has an adjustable output voltage and is stable using  
ceramic output capacitors. The Op-Amp is capable of  
sourcing/sinking 135mA of current (typical). The gate pulse  
modulation switch can operate with a VGH voltage of 5V to  
30V. The LM3311 is available in a low profile 24-lead LLP  
package.  
n Input undervoltage protection  
n Over temperature protection  
n Adjustable low dropout linear regulator (LDO)  
n Integrated Op-Amp  
n Integrated gate pulse modulation (GPM) switch  
n 24-Lead LLP package  
Applications  
n TFT Bias Supplies  
n Portable Applications  
Typical Application Circuit  
20126331  
© 2005 National Semiconductor Corporation  
DS201263  
www.national.com  

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