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LM34927MRX/NOPB PDF预览

LM34927MRX/NOPB

更新时间: 2024-09-18 13:09:23
品牌 Logo 应用领域
德州仪器 - TI 转换器稳压器
页数 文件大小 规格书
17页 333K
描述
7.5-100V Wide Vin, 600mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters 8-SO PowerPAD -40 to 125

LM34927MRX/NOPB 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active包装说明:HLSOP,
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:1.7其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 1.225V
模拟集成电路 - 其他类型:SWITCHING REGULATOR最大输入电压:100 V
最小输入电压:7.5 V标称输入电压:48 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:4.9 mm湿度敏感等级:3
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
最大输出电流:1.3 A最大输出电压:90 V
最小输出电压:1.225 V封装主体材料:PLASTIC/EPOXY
封装代码:HLSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE峰值回流温度(摄氏度):260
座面最大高度:1.68 mm表面贴装:YES
切换器配置:BUCK最大切换频率:1000 kHz
温度等级:AUTOMOTIVE端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mmBase Number Matches:1

LM34927MRX/NOPB 数据手册

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April 5, 2012  
LM34927  
Integrated Secondary Side Bias Regulator for Isolated DC-  
DC Converters  
General Description  
Features  
The LM34927 regulator features all of the functions needed  
to implement a low cost, efficient, isolated bias regulator. This  
high voltage regulator contains two 100V N-Channel MOS-  
FET switches - a high-side buck switch and a low-side syn-  
chronous switch. The Constant-on-time (COT) control  
scheme employed in the LM34927 requires no loop compen-  
sation and provides excellent transient response. The regu-  
lator operates with an on-time that is inversely proportional to  
the input voltage. This feature allows the operating frequency  
to remain relatively constant. An intelligent peak current limit  
is implemented with integrated sense circuit. Other features  
include a programmable input under voltage comparator to  
inhibit operation during low-voltage conditions. Protection  
features include thermal shutdown and VCC Undervoltage  
Lockout (UVLO). The LM34927 is offered in LLP-8 and  
PSOP-8 plastic packages.  
Wide 9V to 100V Input Range  
Integrated 100V, High and Low Side Switches  
No Schottky Required  
Constant On-Time Control  
No Loop Compensation Required  
Ultra-Fast Transient Response  
Nearly Constant Operating Frequency  
Intelligent Peak Current Limit  
Adjustable Output Voltage From 1.225V  
Precision 2% Feedback Reference  
Frequency Adjustable to 1MHz  
Adjustable Undervoltage Lockout (UVLO)  
Remote Shutdown  
Thermal Shutdown  
Packages  
LLP-8  
PSOP-8  
Applications  
Isolated Telecom Bias Supply  
Isolated Automotive and Industrial Electronics  
Typical Application  
30177901  
FIGURE 1. Typical Application Schematic  
© 2012 Texas Instruments Incorporated  
301779 SNVS799  
www.ti.com  

LM34927MRX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM34927MR/NOPB TI

完全替代

适用于隔离式直流/直流转换器的 7.5V 至 100V 宽输入电压、600mA 集成二次侧

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