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LM27213SQ PDF预览

LM27213SQ

更新时间： 2024-10-27 04:44:35
品牌 Logo 应用领域
美国国家半导体 - NSC 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
22页 959K
描述
Single Phase Hysteretic Buck Controller

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中文翻译

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LM27213SQ 技术参数

是否Rohs认证：不符合生命周期：Transferred
包装说明：LLP-48Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.18Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：30 V
最小输入电压：5 VJESD-30 代码：S-XQCC-N48
JESD-609代码：e0长度：7 mm
湿度敏感等级：2功能数量：1
端子数量：48最高工作温度：105 °C
最低工作温度：-5 °C封装主体材料：UNSPECIFIED
封装代码：HVQCCN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
表面贴装：YES切换器配置：PUSH-PULL
温度等级：OTHER端子面层：Tin/Lead (Sn/Pb)
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：40
宽度：7 mmBase Number Matches：1

LM27213SQ 数据手册

 浏览型号LM27213SQ的Datasheet PDF文件第2页浏览型号LM27213SQ的Datasheet PDF文件第3页浏览型号LM27213SQ的Datasheet PDF文件第4页浏览型号LM27213SQ的Datasheet PDF文件第5页浏览型号LM27213SQ的Datasheet PDF文件第6页浏览型号LM27213SQ的Datasheet PDF文件第7页 
February 2006  
LM27213  
Single Phase Hysteretic Buck Controller  
General Description  
Features  
n Ideal load and line transient responses  
n 5V to 30V input range  
The LM27213 is a single-phase synchronous buck regulator  
controller designed to fully support a portable microproces-  
sor. On-chip gate drive makes for a compact, single chip  
solution. Output currents in excess of 25 Amps are possible.  
n On-chip gate drive  
n Convenient CLK_EN# signal  
n Input under-voltage lockout  
n High light-load efficiency  
n Adjustable analog soft start  
n Peak current limit  
The IC employs a current mode hysteretic control mecha-  
nism. Inductor current is sensed through a low value sense  
resistor.  
The LM27213 will operate over an input voltage range of 5V  
to 30V. The output voltage is programmed through 6 Voltage  
Identification (VID) pins and ranges from 0.700V to 1.708V in  
64 steps.  
n Over-voltage protection  
n Error correction for good static accuracy  
n
1% DAC accurcy over temperature  
Since the error in the output voltage directly sets the inductor  
current, the dynamic response to a large, fast load transient  
is close to a square wave. This is optimal for mode transition  
requirements. Also, due to the intrinsic input voltage feedfor-  
ward characteristic of hysteretic control, the line transient  
response is excellent as well.  
n Interfaces with the LM2647 system supply  
n Available in TSSOP or tiny LLP package  
Applications  
n Core voltage supply for Low Power Processors  
n Low voltage high current buck regulators  
The IC provides cycle-by-cycle peak current limit, over-  
voltage protection, and a power good signal. The LM27213  
fully supports the Stop CPU and Sleep modes offered by  
some processors. When enabled, the IC enters a power-  
saving “diode emulator” mode which helps prolong battery  
runtime for portable systems.  
Benefits  
n Single chip core power solution  
n Minimum output capacitance required  
n Low cost, compact design  
The LM27213 also has a soft start feature for the external  
adjustment of soft start speed.  
Typical Application  
20154330  
© 2006 National Semiconductor Corporation  
DS201543  
www.national.com  
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