LM5169
- Designed for reliability in rugged applications
- Wide input voltage range of 6 V to 120 V
- Junction temperature range: –40°C to +150°C
- Fixed 3-ms internal soft-start timer
- Peak and valley current-limit protection
- Input UVLO and thermal shutdown protection
- Suited for scalable industrial power supplies and battery packs
- Low minimum on and off times of 50 ns
- Adjustable switching frequency up to 1 MHz
- Diode emulation for high light-load efficiency
- Auto mode with low quiescent current (< 10 µA)
- FPWM for fly-buck converter capability
- 3-µA shutdown quiescent current
- Pin-to-pin compatible with LM5164, LM5163, LM5017, and LM34927
- Integration reduces solution size and cost
- COT mode control architecture
- Integrated 1.9-Ω NFET buck switch
- Integrated 0.71-Ω NFET synchronous rectifier
- 1.2-V internal voltage reference
- No loop compensation components
- Internal VCC bias regulator and boot diode
- Open-drain power-good indicator
- SOIC PowerPAD™ integrated circuit package
The LM5169 and LM5168 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM516x operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for wide input supply range industrial and high cell count battery pack applications.
With integrated high-side and low-side power MOSFETs, the LM5169 delivers up to 0.65-A of output current and the LM5168 delivers up to 0.3-A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LM516x is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated fly-buck converter applications. Auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LM5169, LM5168 0.65-A/0.3-A, 120-V, Step-Down Converter with Fly-Buck Converter Capability datasheet (Rev. A) | PDF | HTML | 2022年 7月 18日 |
Certificate | LM5169FEVM EU Declaration of Conformity (DoC) | 2024年 8月 27日 | ||
Application note | Inverting Buck-Boost Application for the LM5168 | PDF | HTML | 2023年 2月 24日 | |
Functional safety information | LM5168 and LM5169 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2022年 9月 1日 | |
Functional safety information | LM516x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) | PDF | HTML | 2022年 9月 1日 |
設計與開發
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LM5168FEVM — LM5168 評估模組,115-V fly-buck 穩壓器
LM5168PEVM — LM5168P 115-V DC/DC 降壓穩壓器評估模組
LM5168P 評估模組 (EVM) 是採用同步整流的 115-V DC/DC 降壓穩壓器,可在較小型元件封裝中實現高轉換效率。EVM 可在 20 V 至 115 V (最大 120 V) 的廣泛輸入電壓範圍內運作,並在高達 0.3 A 下以 500 kHz 切換頻率提供調節的 12 V 輸出。輸出電壓的設定點準確度高於 1.5%,並可使用外部電阻分壓器進行調節。此模組設計採用 LM5168P 同步降壓轉換器,具備廣泛輸入電壓範圍、廣泛工作週期範圍、整合式高壓側與低壓側電源 MOSFET、先進過電流防護與精密啟用。
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
HSOIC (DDA) | 8 | 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