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LM68680-Q1-FS — Functional safety documentation and full datasheet for LM68680-Q1
Functional safety documentation and full datasheet for LM68680-Q1
LM68680-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Compliant
- Developed for functional safety applications
- Documentation available to aid ISO 26262 system design planned
- Systematic capability up to ASIL D
- Hardware capability up to ASIL C
- Analog built-in-self-test at start-up
- Redundant and fast (0.35µs) VOUT monitor
- Excellent pin FMEA and pin spacing
- Wide input voltage range: 3V to 70V
- 1% accurate, VOUT from 0.8V to 60V
- Optimized for low EMI requirements
- Facilitates CISPR 25 Class 5 compliance
- Pin-configurable dual-random spread spectrum and slew-rate control reduce peak emissions
- Enhanced HotRod™ QFN package with symmetrical pinout
- Switching frequency from 300kHz to 2.2MHz
- Pin-configurable AUTO or FPWM operation
- Low minimum on time: 36ns (typical)
- Enables 36V to 3.3V conversion at 2.1MHz
- High-efficiency power conversion
- > 95% peak efficiency, 12VIN to 5VOUT, 400kHz
- No-load input current: 3.5µA
- High power density
- Internal compensation, OCP, and TSD
- 4.5mm × 4.5mm eQFN-26 with wettable flanks
- ΘJA = 18°C/W (EVM)
- VIN to PGND pin clearance: 1.1mm
The LM686x0-Q1 are a family of stackable, automotive buck converters designed for high efficiency, high power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 70V simplifying input surge protection design.
The low EMI operation is enabled with minimized loop inductance, internal bypass capacitors, pin-selectable SW node slew-rate control and dual-random spread spectrum (DRSS).
The current-mode control architecture with 36ns minimum on-time allows high conversion ratios at high frequencies, easy loop compensation, fast transient response, and excellent load and line regulation. Up to two converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for supporting output current up to 16A.
The LM686x0-Q1 buck converters are specifically intended for functional safety relevant applications. An array of safety features including ABIST at start-up, redundant and fast VOUT monitor, feedback path failure detection, redundant temperature sensor, thermal shutdown, and current limit significantly reduces residual failure-in-time (FIT).
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檢視所有 1 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM686x0-Q1 70V, 8A/6A/4A, Automotive Buck Converters Optimized for Safety-Relevant Applications datasheet | PDF | HTML | 2024年 10月 24日 |
設計與開發
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開發板
LM65680-Q1EVM — LM65680-Q1 評估模組
LM65680-Q1 評估模組 (EVM) 是同步降壓 DC/DC 穩壓器，可在較小型元件封裝中實現高轉換效率。EVM 可在 6V 至 70V 的寬輸入電壓範圍內運作，提供超大的額定電壓與操作裕度，以承受供應軌電壓暫態，同時提供 5V 的穩壓輸出。輸出電壓的設定點準確度高於 1%，並可透過修改回饋電阻值進行調整，允許使用者視需要自訂輸出電壓。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN-FCRLF (RZY) | 26 | Ultra Librarian |
訂購與品質
內含資訊：
- 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
內含資訊：
- 晶圓廠位置
- 組裝地點