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.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM62440-Q1 Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. E) | PDF | HTML | 2022/4/18 | ||
| 功能安全資訊 | LM62440-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA (Rev. A) | PDF | HTML | 2022/5/17 | |||
| 應用說明 | How to Migrate Between LM614xx and LM624xx Product Families | PDF | HTML | 2021/11/1 | |||
| 技術文章 | Introduction to EMI: Standards, causes and mitigation techniques | PDF | HTML | 2021/4/21 | |||
| 選擇指南 | Buck Converter Quick Reference Guide (Rev. B) | 2021/4/8 | ||||
| 技術文章 | Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev | PDF | HTML | 2020/11/18 | |||
| 技術文章 | Optimizing flip-chip IC thermal performance in automotive designs | PDF | HTML | 2019/12/11 |
設計與開發
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| 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
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。