Part Details for LM3445 by Texas Instruments
Overview of LM3445 by Texas Instruments
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Part Details for LM3445
LM3445 CAD Models
Resources and Additional Insights for LM3445
Reference Designs related to LM3445
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PMP10260 24VDC 输入(双汽车电池)汽车类多相同步降压参考设计
This high-efficiency, high-power reference design uses the LM5119 two-phase synchronous-buck controller to regulate 14.4V at 60A. This design can be used to supply single car battery power from a double battery system, often found in trucks. Features include input EMI filtering, output hot swap p
- CC1110MDR-868-915-RD CC1110 蛇形槽天线 868/915 MHz 参考设计
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TIDA-01004 采用 100 万像素成像仪、Bayer 视频输出和同轴电缆供电技术的汽车摄像头模块参考设计
The TIDA-01004 reference design is a remote automotive camera module that connects over a high speed serial video interface to a display or machine vision processing system. It uses TIs FPD-Link III SerDes technology to transmit uncompressed MegaPixel video data, bidirectional control signals and power either over shielded twisted pair or coax cable.
- TIDA-00744 适用于汽车信息娱乐系统的 50W 系统级电源参考设计
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Forward converter with Universal input driving 2x6 LEDs
PMP7762 is an offline LED driver with TRIAC dimming. It has short circuit protection as wellas op amp control for dimming. It uses 2 op amp control for each LED string to ensure that current in the LED strings match. LM3445 includes a bleeder circuit to ensure proper triac operation by allowing current flow while the line voltage is low to enable proper firing of the triac.
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230V AC input to 23V:0.42A Flyback LED Driver
It is a TRAIC dimmable offline flyback LED driver using LM3445. It has an adaptive constant off-time AC/DC constant current controller feature. It can be used with input supply of 230V AC and can light 7 LEDs in string supplying 420mA of current.
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LM3445 - 220VAC: 7W Dimmable Isolated
This demonstration board highlights the performance of a LM3445 based Flyback LED driver solution that can be used to power a single LED string consisting of 6 / 7 series connected LEDs from an 198 VRMS to 264 VRMS: 50 Hz input power supply. This is a two-layer board using the bottom and top layer for component placement. The demonstration board can be modified to adjust the LED forward current: the number of series connected LEDs that are driven and the switching frequency. Refer to the LM3445 datasheet for detailed instructions. A bill of materials is included that describes the parts used on this demonstration board.
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PMP9403 192W 双相同步升压转换器参考设计
PMP9403 is a high-efficiency dual-phase synchronous boost converter using the LM5122 controller ICs. The design accepts an input voltage of 9Vin to 15Vin (12Vin Nominal) and provides an output of 48Vout capable of supplying 4A of continuous current to the load.
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120V AC input and 24.5V output LED Driver
It is an offline AC-DC LED driver. It has TRIAC dimming capability. It is basically a low sidebuck which has valley filled PFC. It takes an input voltage of 120V AC. This circuit usesLM3445 which is an adaptive constant off-time AC/DC buck (step-down) constant current controller designed to be compatible with Traic dimmers.
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Non-isolated Dimmable LED Driver with improved line regulation
This reference design demonstrates a high efficiency non-isolated dimmable LED driver solution using LM3445. With additional feed-forward circuit: improved line regulation <+/-2% performance is achieved. The input range is 90~132Vac and output is 40V310mA.
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230 Vac Off-line Triac Dimmer Retrofit with 6 LEDs Reference Design
The main purpose of the power supply is to convert the rectified AC Input to DC regulated current for 6 LEDs. The power supply provides protection for the LEDs: limits the transient input voltage and protect against inrush current at plug in. The overall power supply conformity (e.g. mains harmonics (EN): mains interference: international safety standards etc.) are not approved for all the applicable European Norms (EN).The principle of this power supply is a step down. It is regulated by the 350ma average current with a fixed Toff time. At the heart of the power supply is the controller LM3445 current mode control from National Semiconductor. The LM3445 switching frequency is set at a nominal 45 kHz.With the LM3445 National Semiconductor provides a device that avoids visible flickering caused by a TRIAC forward or reverse phase dimmer. The LM3445 overcomes this challenge by translating the TRIAC-chopped waveform to a DIM signal and decoding it to a DC signal. In fact: the LED current is linearly regulated according to the dimming signal.
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230 V in to 180 V out at 200 mA constant-current LED driver reference design
This reference design is a low-side Buck (the output voltage is referenced to the positive DC input (+Vin node): not to the GND node). The controller drives a LED string up to 180V with 200mA constant current. The low-side Buck topology simplifies the schematic thanks to direct-driving of the FET: without the need of high-side driver.
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PMP10210 -14V/150mA 反向降压-升压参考设计
Modified step-down converter PMP2763 to an inverting flyback. Could be easily changed to -15V output to provide negative rail out with a 15V input.
1 - 5 of 13 reference designs