產品規格表
LM51571-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C T A
- Functional Safety-Capable
- Suited for wide operating range for car battery applications
- 2.9-V to 45-V input operating range
- 48-V maximum output (50-V abs max)
- Minimum boost supply voltage of 1.5 V when BIAS ≥ 2.9 V
- Input transient protection up to 50 V
- Minimized battery drain
- Low shutdown current (I Q ≤ 2.6 µA)
- Low operating current (I Q ≤ 700 µA)
- Small solution size and low cost
- Maximum switching frequency up to 2.2 MHz
- 16-pin QFN package (3 mm × 3 mm) with wettable flanks
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking (start-stop application)
- Accurate current limit (see the Device Comparison Table)
- EMI mitigation
- Selectable dual random spread spectrum
- Lead-less package
- Higher efficiency with low-power dissipation
- 45-mΩ R DSON switch
- Fast switching, small switching loss
- Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable wide switching frequency from 100 kHz to 2.2 MHz
- Integrated protection features
- Constant current limiting over input voltage
- Selectable hiccup mode overload protection
- Programmable line UVLO
- OVP protection
- Thermal shutdown
- Accurate ±1% accuracy feedback reference
- Adjustable soft start
- PGOOD indicator
- Create a custom design using the LM5157x-Q1 with the WEBENCH Power Designer
The LM5157x-Q1 device is a wide input range, non-synchronous boost converter with integrated 50-V, 6.5-A (LM5157-Q1) or 50-V, 4.33-A (LM51571-Q1) power switch.
The device can be used in boost, SEPIC, and flyback topologies. The device can start up from a single-cell battery with a minimum of 2.9 V. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 2.9 V.
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開發板
LM5157EVM-BST — LM5157 升壓轉換器評估模組
The LM5157EVM-BST evaluation module showcases the features and performance of the LM5157 device as a wide input voltage boost converter with dual random spread spectrum. The standard configuration is designed to provide a regulated output of 12 V at 1.6 A from an input of 3 V to (...)
開發板
LM5157EVM-FLY — LM5157 返馳升壓轉換器評估模組
LM5157EVM-FLY 評估模組展示 LM5157 做為返馳式轉換器的功能和性能,可為 3 相變流器閘極驅動器偏壓供電的典型應用,產生多重輸出電壓軌。標準配置設計旨在為 8-V 至 16-V 的輸入提供 250 mA 下 10-V 的穩壓輸出,以及分別在 75 mA、75 mA 和 150 mA 的三個隔離式 20-V 導軌。切換頻率為 250 kHz。
開發板
LM5157EVM-SEPIC — 適用於 SEPIC 的 LM5157 評估模組
LM5157EVM-SEPIC 評估模組展示了 LM5157 作為寬輸入非同步 SEPIC 轉換器的功能和性能。標準配置的設計可在 4 V 至 32 V 輸入,在 2.1 MHz 下切換時,在最高 1 A 時提供 12 V 的穩壓輸出。
計算工具
計算工具
SNVR511 — LM5157 and LM5158 Quickstart Calculator for Boost Regulator Design
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
計算工具
SNVR512 — LM5157 and LM5158 Quickstart Calculator for SEPIC Regulator Design
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WQFN (RTE) | 16 | 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