LM62440-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +150°C, TJ
- Functional Safety-Capable
- Optimized for ultra low EMI requirements
- HotRod™ package and parallel input path minimize switch node ringing
- Spread spectrum reduces peak emissions
- 2.1-MHz and 400-kHz factory options
- Adjustable SW node rise time
- Pin selectable FPWM mode for constant frequency at light loads
- Designed for automotive applications
- Supports 42-V automotive load dump
- ±1% total output regulation accuracy
- VOUT adjustable from 1 V to 95% of VIN, with factory options for 5-V and 3.3-V fixed output voltages
- High efficiency power conversion at all loads
- 7-µA no load current at 13.5 VIN, 3.3 VOUT
- 83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
- External bias option for improved efficiency
- Suitable for scalable power supplies
- Pin compatible with:
- LM61440-Q1 (36 V, 4 A, adjustable fSW)
- LM61460-Q1 (36 V, 6 A, adjustable fSW)
- LMQ62440-Q1 (36 V, 4 A, internal capacitors)
- Pin compatible with:
The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.
The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an 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, either 2.1-MHz or 400-kHz frequency factory options 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, provides exceptional efficiency across the entire load range.
您可能會感興趣的類似產品
引腳對引腳的功能與所比較的產品相同
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM62440-Q1 Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. E) | PDF | HTML | 2022年 4月 18日 |
| Functional safety information | LM62440-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA (Rev. A) | PDF | HTML | 2022年 5月 17日 | |
| Application note | How to Migrate Between LM614xx and LM624xx Product Families | PDF | HTML | 2021年 11月 1日 | |
| Technical article | Introduction to EMI: Standards, causes and mitigation techniques | PDF | HTML | 2021年 4月 21日 | |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 2021年 4月 8日 | ||
| Technical article | Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev | 2020年 11月 18日 | ||
| Technical article | Optimizing flip-chip IC thermal performance in automotive designs | PDF | HTML | 2019年 12月 11日 | |
| EVM User's guide | LM62440-Q1 EVM User's Guide | 2018年 6月 22日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
LM62440EVM — 36-V、低 EMI 4-A、5-V 同步、2-MHz、降壓轉換器評估模組
LP877451Q1EVM — 適用於 ADAS PMIC 低雜訊配置 3 降壓和 5-V 升壓的 LP8774x-Q1 評估模組
LP8774x-Q1 裝置設計旨在滿足各種汽車與工業雷達應用中的 AWR 和 IWR MMIC 電源管理需求。本裝置配備三個降壓式 DC/DC 轉換器、5 V 升壓轉換器和 1.8 V/3.3 V LDO。LDO 由升壓供電，用於 xWR 與周邊裝置 IO 供電。本裝置由 SPI 序列介面及啟用訊號控制。
降壓式 DC/DC 轉換器支援 17.6 MHz、8.8 MHz 或 4.4 MHz 的可編程切換頻率，並在廣泛頻率範圍中擁有低雜訊，以最小或無需額外被動式濾波實現免 LDO 電源解決方案。LP8774x-Q1 (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| VQFN-HR (RJR) | 14 | 檢視選項 |
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
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點