TPS51124
- High Efficiency, Low-Power Consumption, Shutdowns to <1 µA
- Fixed Frequency Emulated On-Time Control, Frequency Selectable
From Three Options - D-CAP Mode Enables Fast Transient Response
- Auto-Skip Mode
- Less Than 1% Initial Reference Accuracy
- Low Output Ripple
- Wide Input Voltage Range: 3 V to 28 V
- Output Voltage Range: 0.76 V to 5.5 V
- Low-Side RDS(ON) Loss-less Current Sensing
- Adaptive Gate Drivers With Integrated Boost Diode
- Internal 1.2-ms Voltage-Servo Soft-Start
- Powergood Signals for Each Channel With Delay Timer
- Output Discharge During Disable, Fault
- APPLICATIONS
- Notebook I/O and Low-Voltage System Bus
All other trademarks are the property of their respective owners
The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of notebook power bus regulators with the absolute lowest external component count and lowest standby consumption. The fixed frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to milliampere range. The main control loop for the TPS51124 uses the D-CAP mode that optimized for low ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. Simple and separate power good signals for each channel allow flexibility of power sequencing. The part provides a convenient and efficient operation with supply input voltages (V5IN, V5FILT) ranging from 4.5 V to 5.5 V, conversion voltages (drain voltage for the synchronous high-side MOSFET) from 3 V to 28 V and output voltages from 0.76 V to 5.5 V.
The TPS51124 is available in 24-pin VQFN package specified from –40°C to 85°C ambient temperature range.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS51124 Dual Synchronous Step-Down Controller for Low-Voltage Power Rails datasheet (Rev. C) | PDF | HTML | 2014/12/31 | ||
| 使用指南 | TPS51124 Buck Controller Evaluation Module User's Guide (Rev. B) | PDF | HTML | 2022/3/3 | |||
| 應用說明 | Intel Core i3, i5, i7 [Arrandale] Reference Design | 2010/7/21 | ||||
| 應用說明 | Adaptive Constant On-Time (D-CAPTM) Control Study in Notebook Applications (Rev. B) | 2007/12/4 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
訂購與品質
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