產品規格表
TPS5403
- Fixed 3.3-V Output
- 4.5-V to 28-V Wide Input Voltage Range
- Up to 1.7-A Maximum Continuous Output Loading Current
- Pulse Skipping Mode to Achieve High Light Load Efficiency
- Over 80% Efficiency at 10-mA Loading
- Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor
(Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz) - Peak Current-Mode Control
- Cycle-by-Cycle Over Current Protection
- Frequency Spread Spectrum and Switching Node Anti-Ringing to Ease EMI Issue
- External Soft Start
- Available in SOIC8 Package
The TPS5403 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 4.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.
TPS5403 also features a light load pulse skipping mode, which allows for a power loss reduction from the input power supply to the system at light loading.
The switching frequency of the converters can be set from 50 kHz to 1.1 MHz with an external resistor. Frequency spread spectrum operation is introduced for EMI reduction.
LX anti-ringing is added to address high frequency EMI issues.
A cycle-by-cycle current limit with frequency fold back protects the IC at over loading condition.
技術文件
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檢視所有 2 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | Monolithic Non-Synchronous Step-Down Regulator With Integrated MOSFET , datasheet | 2012年 9月 12日 | |
| User guide | TPS5403 Step-Down Converter Evaluation Module User's Guide (Rev. A) | PDF | HTML | 2021年 11月 1日 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | 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