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Product Overview
The TPS76728QD from Texas Instruments is a low-dropout (LDO) linear voltage regulator designed to deliver a fixed 2.8V output with a maximum current of 1A. Housed in an 8-pin SOIC package, this device offers excellent line and load regulation, making it suitable for power-sensitive applications. With a dropout voltage of typically 350mV at full load, it ensures efficient operation even when the input voltage is close to the output. The TPS76728QD features an enable pin for power sequencing and includes overcurrent and overtemperature protection.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage |
2.8V (Fixed) |
| Output Current |
1A |
| Dropout Voltage (Typical) |
350mV @ 1A |
| Input Voltage Range |
2.7V to 10V |
| Line Regulation |
0.01%/V |
| Load Regulation |
0.02%/A |
| Quiescent Current |
85µA |
| Output Noise |
40µVrms (10Hz-100kHz) |
| Operating Temperature |
-40°C to +125°C |
| Package |
8-SOIC |
Key Features
- Fixed 2.8V output with ±2% accuracy
- Low dropout voltage: 350mV typical at 1A
- Low quiescent current: 85µA
- Enable pin for power management
- Overcurrent and overtemperature protection
- Stable with low ESR output capacitors (≥2.2µF)
- Fast transient response
Target Applications
- 5G base station power supplies (e.g., for RF transceiver modules)
- Automotive dashboard displays and infotainment systems
- Industrial sensor interfaces and PLC modules
- Portable battery-powered devices (e.g., medical monitors)
- FPGA and DSP core voltage regulation
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TPS76728QD. Our core advantages include:
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產品概述
TPS76728QD 是德州儀器(TI)推出的一款低壓差線性穩壓器(LDO),提供固定的 2.8V 輸出,最大電流 1A。採用 8 引腳 SOIC 封裝,具有優異的線性和負載調整率,適用於對電源敏感的應用。在滿載條件下,典型壓差僅為 350mV,確保在輸入電壓接近輸出時仍能高效工作。該器件配備使能引腳,便於電源排序,並集成過流和過熱保護功能。
詳細技術參數
| 參數 |
數值 |
| 輸出電壓 |
2.8V(固定) |
| 輸出電流 |
1A |
| 典型壓差 |
350mV @ 1A |
| 輸入電壓範圍 |
2.7V 至 10V |
| 線性調整率 |
0.01%/V |
| 負載調整率 |
0.02%/A |
| 靜態電流 |
85µA |
| 輸出噪聲 |
40µVrms(10Hz-100kHz) |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
8-SOIC |
核心特性
- 固定 2.8V 輸出,精度 ±2%
- 低壓差:典型值 350mV @ 1A
- 低靜態電流:85µA
- 使能引腳,便於電源管理
- 過流和過熱保護
- 兼容低 ESR 輸出電容(≥2.2µF)
- 快速瞬態響應
典型應用場景
- 5G 基站電源(例如射頻收發模塊)
- 汽車儀表盤顯示和信息娛樂系統
- 工業傳感器接口和 PLC 模塊
- 便攜式電池供電設備(例如醫療監護儀)
- FPGA 和 DSP 核心電壓調節
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