TPS61254
- 93% Efficiency at 3.5-MHz Operation
- 21-µA Quiescent Current in Standby Mode
- 37-µA Quiescent Current in Normal Operation
- Wide VIN Range From 2.3 V to 5.5 V
- VIN ≥ VOUT Operation
- IOUT ≥ 800 mA at VOUT= 4.5 V, VIN ≥ 2.65 V
- IOUT ≥ 1000 mA at VOUT = 5.0 V, VIN ≥ 3.3 V
- IOUT ≥ 1500 mA (Peak) at VOUT = 5.0 V, VIN ≥ 3.3 V
- ±2% Total DC Voltage Accuracy
- Light-Load PFM Mode
- Selectable Standby Mode or True Load
Disconnect During Shutdown - Thermal Shutdown and Overload Protection
- Only Three Surface-Mount External Components
Required - Total Solution Size < 25 mm2
- 9-Pin NanoFree™ (CSP) Packaging
The TPS6125x device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x supports up to 800-mA load current from a battery discharged as low as 2.65V and allows the use of low cost chip inductor and capacitors.
With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 3.15 V to 5.0 V.
The TPS6125x operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 37 µA (typ) during light load operation.
In addition, the TPS6125x device can also maintain its output biased at the input voltage level. In this mode, the synchronous rectifier is current limited allowing external load (e.g. audio amplifier) to be powered with a restricted supply. In this mode, the quiescent current is reduced to 21 µA. During shutdown, the load is completely disconnected from the battery. Input current in shutdown mode is less than 1 µA (typ), which maximizes battery life.
The TPS6125x offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size.
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 | TPS6125x 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging データシート (Rev. G) | PDF | HTML | 2016/06/16 | ||
| アプリケーション・ノート | 昇圧コンバータの電力段に関する基本的な計算 (Rev. D 翻訳版) | PDF | HTML | 英語版 (Rev.D) | PDF | HTML | 2022/12/01 | |
| アプリケーション・ノート | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018/12/11 | ||||
| セレクション・ガイド | 電源 IC セレクション・ガイド 2018 (Rev. R 翻訳版) | 英語版 (Rev.R) | 2018/09/13 | |||
| アプリケーション・ノート | Five Steps to a Good PCB Layout of the Boost Converter | PDF | HTML | 2016/05/03 | |||
| アナログ デザイン ジャーナル | IQ: What it is, what it isn’t, and how to use it | 2011/06/17 | ||||
| アプリケーション・ノート | Minimizing Ringing at the Switch Node of a Boost Converter | 2006/09/15 |
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。
TPS61254EVM-711 — 評価基板、TPS61254 用、小型ブースト・コンバータ、入力電流制限/バイパス付
The TPS6125XEVM-711 enables test and evaluation of the Texas Instruments' TPS61254 and TPS61256 (TPS6125x) devices, a series of 3.5-MHz, up to 5.5-V, step-up dc-dc converters. This user's guide includes EVM specifications, the schematic diagram, bill of materials, and board layout. The TPS6125x (...)
TPS61254 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 |
|---|---|---|
| DSBGA (YFF) | 9 | Ultra Librarian |