LMR51403
- Functional Safety-Capable
- Configured for rugged industrial applications
- 4V to 42V input voltage range
- Input transient protection up to 50V
- 300mA continuous output current
- 80ns minimum switching on time
- Fixed 400kHz and 1.1MHz switching frequency
- –40°C to 150°C junction temperature range
- 96% maximum duty cycle
- Monotonic start-up with prebiased output
- Short-circuit protection with hiccup mode
- Precision enable
- ±1.5% tolerance voltage reference
- Small design size and ease of use
- Integrated synchronous rectification
- Internal compensation for ease of use
- SOT-23 package
- Various options in pin-to-pin compatible package
- PFM and forced PWM (FPWM) options
- Pin-to-pin compatible with the LMR51610, LMR51406, LMR16006, LV2862, LMR50410, TPS560430, and LMR54410
- Create a custom design using the LMR51403 with the WEBENCH ™ Power Designer
The LMR51403 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 300mA load current. With a wide input range of 4V to 42V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.
The LMR51403 operates at 400kHz and 1.1MHz switching frequency to support use of relatively small inductors for an optimized design size. The LMR51403 has a 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 allow the device to be used with minimal 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.
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 | LMR51403 4V to 42V, 300mA, Synchronous Buck Converter in a SOT-23 Package データシート | PDF | HTML | 2024年 11月 19日 | ||
機能安全情報 | LMR51403 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2024年 10月 9日 |
設計および開発
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LMR51603EVM — LMR51603 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 |
---|---|---|
SOT-23 (DBV) | 6 | 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