LM61440-Q1
- AEC-Q100 qualified with the following results:
- Temperature grade 1: –40°C to 150°C, TJ
- Functional Safety-Capable
- Optimized for ultra-low EMI requirements
- HotRod package minimizes switch node ringing
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions
- Adjustable SW node rise time
- Designed for automotive applications
- Supports 42-V automotive load dump
- ±1% total output regulation accuracy
- VOUT adjustable from 1 V to 95% of VIN
- 0.3-V dropout with 3-A load (typical)
- 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:
- LM61460-Q1 (36 V, 6 A, adjustable fSW)
- LM61435-Q1 (36, 3.5 A, adjustable fSW)
- Pin compatible with:
The LM61440-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; tolerant of 42 V, easing input surge protection design. The LM61440-Q1 implements soft recovery from dropout eliminating overshoot on the output.
The LM61440-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, 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 set or 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.
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技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LM61440-Q1Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. C) | PDF | HTML | 2021年 6月 22日 |
Application note | How to Migrate Between LM614xx and LM624xx Product Families | PDF | HTML | 2021年 11月 1日 | |
Functional safety information | LM614xx-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. B) | PDF | HTML | 2021年 9月 15日 | |
EVM User's guide | LM61460-Q1 EVM User's Guide (Rev. D) | PDF | HTML | 2021年 7月 30日 | |
Technical article | Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev | 2020年 11月 18日 | ||
Functional safety information | FIT Rate, Failure Mode Distribution LM61440 Q1 | 2020年 3月 31日 | ||
Technical article | Optimizing flip-chip IC thermal performance in automotive designs | PDF | HTML | 2019年 12月 11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)。
LM61460EVM — 36-V、低 EMI 6-A、5-V 同步、400-kHz、降壓轉換器評估模組
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