参数资料
型号: LM2735XMFEVAL/NOPB
厂商: National Semiconductor
文件页数: 18/58页
文件大小: 0K
描述: BOARD DEMO FOR LM2735 SOT23-5
标准包装: 1
主要目的: DC/DC,步升
输出及类型: 1,非隔离
输出电压: 12V
电流 - 输出: 500mA
输入电压: 3 ~ 5.5 V
稳压器拓扑结构: 升压
频率 - 开关: 1.6MHz
板类型: 完全填充
已供物品: 板,文档
已用 IC / 零件: LM2735
SNVS485F – JUNE 2007 – REVISED APRIL 2013
?
PCB variables (copper weight, thermal via’s, layers component placement).
It would be wrong to assume that the top case temperature is the proper temperature when calculating R θ JC
value. The R θ JC value represents the thermal impedance of all six sides of a package, not just the top side. This
document will refer to a thermal impedance called R ψ JC . R ψ JC represents a thermal impedance associated with
just the top case temperature. This will allow one to calculate the junction temperature with a thermal sensor
connected to the top case.
LM2735 Thermal Models
Heat is dissipated from the LM2735 and other devices. The external loss elements include the Schottky diode,
inductor, and loads. All loss elements will mutually increase the heat on the PCB, and therefore increase each
other’s temperatures.
L 1
I L t ( )
D 1
V OUT ( t )
V IN
Q 1
C 1
Figure 28. Thermal Schematic
18
Product Folder Links: LM2735
Copyright ? 2007–2013, Texas Instruments Incorporated
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LM2735XMFX 制造商:NSC 制造商全称:National Semiconductor 功能描述:520kHz/1.6MHz - Space-Efficient Boost and SEPIC DC-DC Regulator
LM2735XMFX/NOPB 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
LM2735XMY 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Up 2.7V to 5.5V 8-Pin MSOP EP T/R 制造商:Texas Instruments 功能描述:SWITCH REG, BOOST, 1.6MHZ, MSOP8
LM2735XMY/NOPB 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
LM2735XMYEVAL 功能描述:电源管理IC开发工具 LM2735XMY EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V