Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The LM5149RGYR is an 80V ultra-low IQ synchronous step-down DC/DC controller for high current single output applications. The controller uses a peak current mode control architecture for simple loop compensation, fast transient response, and excellent load and line regulation. The LM5149 can be set to operate in an interleaved bi-phase mode for accurate current sharing for high current applications. The device can operate at VINs as low as 3.5V and near 100% duty cycle if required.

Features

• Functional Safety-Capable

– Documentation available to aid functional safety system design

• Two integrated EMI mitigation mechanisms

– Active EMI Filter for enhanced EMI performance at lower frequencies

– Selectable dual random spread spectrum (DRSS) for enhanced EMI performance across low and high-frequency bands

– EMI reduced by an average of 25 dBµV

– Reduces the external differential-mode input filter size by 50% and lowers systems cost

– Optimized for CISPR 32 Class B requirements

• Versatile synchronous buck DC/DC controller

– Wide input voltage range of 3.5 V to 80 V

– 1% accurate, fixed 3.3 V, 5 V, 12 V, or adjustable output from 0.8 V to 55 V

– 150°C maximum junction temperature

– Shutdown mode current: 2.3 µA

– No-load sleep current: 9.5 µA

– Stackable up to two phases

– Advanced dropout with frequency foldback

• Switching frequency from 100 kHz to 2.2 MHz

– SYNC in and SYNC out capability

• Inherent protection features for robust design

– Internal hiccup-mode overcurrent protection

– ENABLE and PGOOD functions

– VCC, VDDA, and gate-drive UVLO protection

– Internal or external loop compensation

– Thermal shutdown protection with hysteresis

• Create a custom design using the LM5149 with WEBENCH® Power Designer

Applications

• Building automation

• Industrial transport

• Wireless infrastucture

• Test and measurement

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.