LMR51440-Q1
- AEC-Q100 qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
- Functional Safety-Capable
- Supports automotive system requirements:
- Wide input voltage range: 4V to 36V
- 4A or 5A continuous output current
- ±1.0% tolerance voltage reference at room temperature
- Minimum switching-on time: 75ns (typical)
- Low quiescent current: 25µA
- Adjustable frequency: 200kHz to 1MHz
- Frequency spread spectrum
- Protection features:
- Precision enable input
- Open-drain PGOOD
- VIN undervoltage lockout (UVLO)
- Cycle-by-cycle current limiting
- Short-circuit protection with hiccup mode
- Thermal shutdown
- Small design size and ease of use
- Integrated synchronous rectification
- Internal compensation for ease of use
- WSON-12 package
- PFM and FPWM options in pin-to-pin compatible package
- Create a custom design using the LMR514x0-Q1 with the WEBENCH Power Designer
The LMR514x0-Q1 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 4A or 5A load current. With a wide input range of 4V to 36V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.
The LMR514x0-Q1 features adjustable switching frequency from 200kHz to 1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load, and forced pulse width modulation (FPWM version) to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.
The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0-Q1 is available in a WSON-12 package.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | LMR514x0-Q1 36V, 4A / 5A , Automotive, Synchronous Buck Converter With Low IQ データシート | PDF | HTML | 2024年 8月 20日 | ||
機能安全情報 | LMR51440-Q1 and LMR51450-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2024年 8月 13日 |
設計および開発
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LMR51450EVM — LMR51450 同期整流降圧コンバータの評価基板
パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
---|---|---|
WSON (DRR) | 12 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点