The LM25143 is a 42-V DC/DC synchronous buck controller for high-current single or dual outputs. Deriving from a family of wide-VIN range controllers, the device uses an interleaved, stackable, peak current-mode control architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for higher output current. A high-side switch minimum on time of 65 ns provides large step-down ratios, enabling the direct conversion from 12-V or 24-V inputs to low-voltage rails for reduced system complexity and cost. The LM25143 continues to operate during input voltage dips as low as 3.5 V, at nearly 100% duty cycle if needed.
The 15-µA no-load quiescent current with the output voltage in regulation extends operating run-time in battery-powered systems. Power the LM25143 from the output of the switching regulator or another available source for even lower input quiescent current and power loss.
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM25143 3.5-V to 42-V Dual Synchronous Buck DC/DC Controller With Ultra-Low IQ datasheet | PDF | HTML | 2022/03/18 |
| Application note | How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck | PDF | HTML | 2023/08/16 | |
| Functional safety information | LM25143 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 2022/02/17 | |
| E-book | An Engineer’s Guide to Low EMI in DC/DC Regulators | 2021/04/21 | ||
| Application note | LM5143-Q1 4-phase Buck Regulator Design (Rev. A) | PDF | HTML | 2020/04/28 |
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This stand-alone tool facilitates and assists with the design of a DC/DC buck regulator based on the LM5143-Q1 synchronous buck DC/DC controller with low IQ. The user can expeditiously arrive at an optimized design to meet the application requirements.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RHA) | 40 | Ultra Librarian |