TPS54519
- Two 30 mΩ (typical) MOSFETs for high efficiency
at 5-A loads - 200kHz to 2MHz Switching Frequency
- 0.6 V Voltage Reference With ± 1% Initial Accuracy
- Adjustable Slow Start / Sequencing
- UV and OV Power Good Output
- Low Operating and Shutdown Quiescent Current
- Safe Start-up into Pre-Biased Output
- Cycle by Cycle Current Limit, Thermal and Frequency
Fold Back Protection - –40°C to 140°C Operating Junction
Temperature Range - Thermally Enhanced 3mm × 3mm 16-pin QFN
The TPS54519 device is a full featured 6 V, 5 A, synchronous step down current mode converter with two integrated MOSFETs.
The TPS54519 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package.
Efficiency is maximized through the integrated 30mΩ MOSFETs and 350µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.
Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
Frequency fold back and thermal shutdown protects the device during an overcurrent condition.
The TPS54519 is supported in the SwitcherPro Software Tool at www.ti.com/switcherpro.
For more SWIFT documentation, see the TI website at www.ti.com/swift.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | 2.95-V to 6-V Input, 5-A Synchronous Step Down SWIFT Converter データシート (Rev. A) | 2013/12/13 | |||
| セレクション・ガイド | Buck Converter Quick Reference Guide (Rev. B) | 2021/04/08 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
TPS54478EVM-037 — 評価モジュール、TPS54478 用、同期整流・降圧コンバータ、プレバイアス起動
TPS54519EVM-037 — Evaluation Module for TPS54519 Synchronous Step-Down Converter
TPS54519 TINA-TI Steady State Reference Design (Rev. A)
TPS54519 Unencrypted PSpice Average Model Package (Rev. B)
TPS54519 Unencrypted PSpice Transient Model Package (Rev. A)
| 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 |
|---|---|---|
| WQFN (RTE) | 16 | Ultra Librarian |
購入と品質
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。