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LM3754SQX PDF预览

LM3754SQX

更新时间: 2024-11-07 05:42:03
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
38页 1014K
描述
Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regulator Controller

LM3754SQX 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:5 X 5 MM, LLP-32Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.22模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:18 V最小输入电压:4.5 V
JESD-30 代码:S-XQCC-N32JESD-609代码:e0
长度:5 mm湿度敏感等级:1
功能数量:1端子数量:32
最高工作温度:150 °C封装主体材料:UNSPECIFIED
封装代码:HVQCCN封装等效代码:LCC32,.2SQ,20
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
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:PUSH-PULL最大切换频率:1000 kHz
端子面层:Tin/Lead (Sn85Pb15)端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
宽度:5 mmBase Number Matches:1

LM3754SQX 数据手册

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December 14, 2009  
LM3753/54  
Scalable 2-Phase Synchronous Buck Controllers with  
Integrated FET Drivers and Linear Regulator Controller  
Phase current sharing ±12% max over temperature  
General Description  
Integrated 4.35V ±2.3% LDO  
The LM3753 and LM3754 are full featured single-output dual-  
Inductor DCR or sense resistor current sensing  
phase voltage-mode synchronous PWM buck controllers.  
They can be configured to control from 2 to 12 interleaved  
power stages creating a single high power output. Both con-  
trollers utilize voltage-mode control with input voltage feed-  
forward for high noise immunity. An internal average current  
loop forces real time current sharing between phases during  
load transients.  
Interleaved switching for low I/O ripple current  
Integrated synchronous NFET drivers  
Programmable Soft-Start (LM3754) or Tracking (LM3753)  
Pre-biased startup (LM3754)  
Output voltage differential remote sensing  
Minimum controllable on-time of only 50 ns  
Programmable Enable and input UVLO  
Power Good flag  
The LM3753 supports a Tracking function, while the LM3754  
supports adjustable Soft-Start. The LM3753 Tracking is al-  
ways enabled, so the output is controlled both up and down.  
The Soft-Start function on the LM3754 can only drive the out-  
put upwards – it will not pull it down, therefore, pre-biased  
loads will not be discharged. Available in the 5 mm x 5 mm  
thermally enhanced 32-lead LLP package with a thermal pad.  
OVP, UVP and hiccup over-current protection  
Applications  
CPUs, GPUs (graphic cards), ASICs, FPGAs, Large  
Memory Arrays, DDR  
High Current POL Converters  
Features  
Wide input voltage range of 4.5V to 18V  
Networking Systems  
Up to 12 channels for 300A load  
Power Distribution Systems  
System accuracy better than 1%  
Telecom/Datacom DC/DC Converters  
0.6V to 3.6V output voltage range  
Desktops, Servers and Workstations  
Switching frequency from 200 kHz to 1 MHz  
Simplified Application  
30091901  
© 2009 National Semiconductor Corporation  
300919  
www.national.com  

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