LM70880
- Functional Safety-Capable
- Synchronous DC/DC converter with a versatile buck controller and robust power MOSFETs
- Wide input voltage range: 4.5V to 80V
- Shutdown mode current: 2.3µA
- No-load IQ regulating 48V to 5V: 8.2µA
- 1% accurate, fixed 3.3V, 5V, 12V, or adjustable outputs from 0.8V to 55V
- Dual-phase operation enabling output currents up to 16A
- Designed for low EMI requirements
- Facilitates CISPR 11 Class B compliance
- Pin-selectable ±8% dual-random spread spectrum reduces peak emissions
- Switching frequency: 200kHz to 2.2MHz
- Pin-configurable AUTO or FPWM operation
- Inherent protection features for robust design
- Internal hiccup-mode overcurrent protection
- Enable, power good, and thermal shutdown
- Internal or external loop compensation
- 6mm × 6mm thermally optimized, RoHS compliant, QFN-29 package with Pb-free plating
- Create a custom design using the LM708x0 with the WEBENCH Power Designer
The LM708x0 is a family of low-IQ, wide-VIN synchronous buck converters designed for an input voltage range of 4.5V to 80V and delivering up to 8A of output current at fixed output voltages of 3.3V, 5V, 12V, or an adjustable output.
The LM708x0 uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. A pair of LM708x0 converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for applications requiring up to 16A of output current.
The LM708x0 features a unique Dual Random Spread Spectrum (DRSS) function that combines low-frequency triangular and high-frequency cycle-by-cycle random modulations for improved EMI performance across a wide range of frequency bands.
Additional features of the LM708x0 include user-selectable diode emulation for lower current consumption at light-load conditions, open-drain Power-Good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 2.8ms soft-start time, and thermal shutdown protection with automatic recovery.
The LM708x0 converter comes in a 6mm × 6mm thermally-optimized, 29-pin QFN package. The three die-attach pads (VIN, SW, and PGND) improve thermal performance and board level reliability (BLR).
技術文件
設計與開發
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LM706A0QEVM — LM706A0-Q1 評估模組
LM706A0-Q1 高密度評估模組 (EVM) 設計為使用從 8V 至 65V 的穩壓或非穩壓高電壓輸入軌,可在最高 10A 的負載電流下產生嚴格穩壓的 3.3V 輸出電壓。這款 VIN 範圍廣泛的 DC/DC 解決方案提供超大額定電壓與運作裕度,可承受供應軌電壓暫態。自由運轉切換頻率為 400kHz,並且能與頻率較高或較低的外部時脈訊號同步。為這款 EVM 選擇的動力系統被動元件符合汽車 AEC-Q200 標準,且可從多個元件廠商購買。
LM70880QEVM — LM70880-Q1 評估模組
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
VQFN (RRX) | 29 | 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