- 您现在的位置：买卖IC网 > PDF目录79953 > LM5045MHX (NATIONAL SEMICONDUCTOR CORP) SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, PDSO28 PDF资料下载
参数资料
| 型号： | LM5045MHX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | ETSSOP-28 |
| 文件页数： | 17/28页 |
| 文件大小： | 610K |
| 代理商： | LM5045MHX |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
CURRENT SENSE
The CS pin receives an input signal representative of its
transformer’s primary current, either from a current sense
transformer or from a resistor located at the junction of source
pin of the primary switches, as shown in Figure 18 and Figure
19 respectively. In both the cases, the filter components R
F
and C
F should be located as close to the IC as possible, and
the ground connection from the current sense transformer, or
R
SENSE should be a dedicated trace to the appropriate GND
pin. Please refer to the layout section for more layout tips.
The current sense components must provide a signal >
710mV at the CS pin during an over-load event. Once the
voltage on the CS pin crosses the current limit threshold, the
current sense comparator terminates the PWM pulse and
starts to charge the RES pin. Depending on the configuration
of the RES pin, the LM5045 will eventually initiate a hiccup
mode restart or be in continuous current limit.
30145415
FIGURE 18. Transformer Current Sense
30145422
FIGURE 19. Resistor Current Sense
www.national.com
24
LM5045
相关PDF资料 |
PDF描述 |
|---|---|
| LM5045SQX | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, QCC28 |
| LT1183CN | 1.25 A FLUORESCENT LIGHT CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP16 |
| LM385BMZ-1.2 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, PBCY3 |
| LU100-12 | 1-OUTPUT 100 W AC-DC REG PWR SUPPLY MODULE |
| L-12-OV-15 | SPECIALTY ANALOG CIRCUIT, MUFM2 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM5045MHX/NOPB | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| LM5045SQ | 制造商:TI 制造商全称:Texas Instruments 功能描述:Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5045SQ/NOPB | 功能描述:电流型 PWM 控制器 Full-Bridge PWM Cntrlr RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| LM5045SQX | 制造商:TI 制造商全称:Texas Instruments 功能描述:Full-Bridge PWM Controller with Integrated MOSFET Drivers |
| LM5045SQX/NOPB | 功能描述:IC PWM CTRLR FULL BRIDG 28LLP RoHS:是 类别:集成电路 (IC) >> PMIC - AC-DC 转换器，离线开关 系列:PowerWise® 标准包装:1 系列:FPS™ 输出隔离:隔离 频率范围:61kHz ~ 73kHz 输入电压:8 V ~ 26 V 输出电压:650V 功率（瓦特）:12W 工作温度:-40°C ~ 115°C 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-MDIP 包装:Digi-Reel® 其它名称:FSL206MRBNFSDKR |
发布紧急采购，3分钟左右您将得到回复。