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LM27222SD PDF预览

LM27222SD

更新时间： 2024-10-27 03:55:15
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器接口集成电路
页数 文件大小 规格书
11页 602K
描述
High-Speed 4.5A Synchronous MOSFET Driver

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中文翻译

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LM27222SD 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：HVSON, SOLCC8,.15,32Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.23高边驱动器：YES
接口集成电路类型：HALF BRIDGE BASED MOSFET DRIVERJESD-30 代码：S-XDSO-N8
JESD-609代码：e0长度：4 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C标称输出峰值电流：3.2 A
封装主体材料：UNSPECIFIED封装代码：HVSON
封装等效代码：SOLCC8,.15,32封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
电源：5 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：MOSFET Drivers
最大供电电压：7 V最小供电电压：4 V
标称供电电压：5 V表面贴装：YES
温度等级：AUTOMOTIVE端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.8 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：4 mmBase Number Matches：1

LM27222SD 数据手册

 浏览型号LM27222SD的Datasheet PDF文件第2页浏览型号LM27222SD的Datasheet PDF文件第3页浏览型号LM27222SD的Datasheet PDF文件第4页浏览型号LM27222SD的Datasheet PDF文件第5页浏览型号LM27222SD的Datasheet PDF文件第6页浏览型号LM27222SD的Datasheet PDF文件第7页 
March 2006  
LM27222  
High-Speed 4.5A Synchronous MOSFET Driver  
General Description  
Features  
n Adaptive shoot-through protection  
n 10ns dead time  
The LM27222 is a dual N-channel MOSFET driver designed  
to drive MOSFETs in push-pull configurations as typically  
used in synchronous buck regulators. The LM27222 takes  
the PWM output from a controller and provides the proper  
timing and drive levels to the power stage MOSFETs. Adap-  
tive shoot-through protection prevents damaging and effi-  
ciency reducing shoot-through currents, thus ensuring a ro-  
bust design capable of being used with nearly any MOSFET.  
The adaptive shoot-through protection circuitry also reduces  
the dead time down to as low as 10ns, ensuring the highest  
operating efficiency. The peak sourcing and sinking current  
for each driver of the LM27222 is about 3A and 4.5Amps  
respectively with a Vgs of 5V. System performance is also  
enhanced by keeping propagation delays down to 8ns. Effi-  
ciency is once again improved at all load currents by sup-  
porting synchronous, non-synchronous, and diode emulation  
modes through the LEN pin. The minimum output pulse  
width realized at the output of the MOSFETs is as low as  
30ns. This enables high operating frequencies at very high  
conversion ratios in buck regulator designs. To support low  
power states in notebook systems, the LM27222 draws only  
5µA from the 5V rail when the IN and LEN inputs are low or  
floating.  
n 8ns propagation delay  
n 30ns minimum on-time  
n 0.4Ω pull-down and 0.9Ω pull-up drivers  
n 4.5A peak driving current  
n MOSFET tolerant design  
n 5µA quiescent current  
n 30V maximum input voltage in buck configuration  
n 4V to 6.85V operating voltage  
n SO-8 and LLP packages  
Applications  
n High Current Buck And Boost Voltage Converters  
n Fast Transient DC/DC Power Supplies  
n Single Ended Forward Output Rectification  
n CPU And GPU Core Voltage Regulators  
Typical Application  
20117902  
FIGURE 1.  
© 2006 National Semiconductor Corporation  
DS201179  
www.national.com  
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