LMQ61460
- Functional Safety-Capable
- Optimized for ultra-low EMI requirements
- Hotrod™ package minimizes switch node ringing
- Internal bypass capacitors reduce EMI
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions
- Adjustable switch node rise time
- Designed for rugged applications
- Supports 42-V transient
- 0.4-V dropout with 4-A load (typical)
- High efficiency power conversion at all loads
- 7-µA no load current at 13.5 VIN, 3.3 VOUT
- 90% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
- Low MOSFET ON resistance
- RDS_ON_HS = 41 mΩ (typical)
- RDS_ON_LS = 21 mΩ (typical)
- External bias option for improved efficiency
- Pin compatible with:
- LM61460 (36 V, 6 A)
- Use TPSM63606 module for faster time to market
The LMQ61460 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output.
The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.
Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LMQ61460 3-V to 36-V, 6 A, Low EMI Synchronous Step-Down Converter datasheet (Rev. D) | PDF | HTML | 2022年 6月 28日 |
Application note | How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck | PDF | HTML | 2023年 8月 16日 | |
Technical article | How buck regulators with integrated capacitors help lower EMI and save board space | PDF | HTML | 2022年 3月 16日 | |
Technical article | Powering medical imaging applications with DC/DC buck converters | PDF | HTML | 2020年 11月 24日 | |
Functional safety information | LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A) | PDF | HTML | 2020年 9月 9日 | |
Certificate | LMQ61460EVM-400K EU Declaration of Conformity (DoC) | 2020年 9月 1日 |
設計與開發
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LMQ61460EVM — 36-V、低 EMI 6-A、5-V 同步、400 kHz、降壓轉換器評估模組
SNVR493 — LMQ61460 Design Tool
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
VQFN-HR (RJR) | 14 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點