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Product Overview
The TPS77118DGKG4 from Texas Instruments is a low-dropout (LDO) linear voltage regulator designed to deliver a fixed 1.8V output with a maximum current of 150mA. Housed in an 8-pin VSSOP package, this device offers excellent line and load regulation, making it suitable for noise-sensitive applications. The TPS77118 features a low dropout voltage of typically 170mV at full load, enabling efficient operation even with small input-to-output voltage differentials. It includes an enable pin for power sequencing and a power-good output for system monitoring.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage |
1.8V (Fixed) |
| Output Current |
150mA |
| Dropout Voltage (Typ) |
170mV @ 150mA |
| Input Voltage Range |
2.7V to 10V |
| Quiescent Current (Typ) |
85µA |
| PSRR (1kHz) |
60dB |
| Output Noise (10Hz-100kHz) |
30µV RMS |
| Operating Temperature |
-40°C to +125°C |
| Package |
8-VSSOP |
Key Features
- Fixed 1.8V output with ±2% accuracy
- Low dropout voltage: 170mV typical at 150mA
- Low quiescent current: 85µA typical
- Enable pin for power management
- Power-good output with open-drain
- Thermal shutdown and overcurrent protection
- Stable with ceramic output capacitors (1µF)
- Small 8-VSSOP package (3.0mm x 3.0mm)
Target Applications
- 5G base station power management (e.g., supply for RF transceiver analog blocks)
- Automotive dashboard infotainment systems (e.g., powering MCU core)
- Industrial sensor modules (e.g., pressure transmitter signal conditioning)
- Portable medical devices (e.g., glucose meter analog front-end)
- IoT edge nodes (e.g., wireless sensor node power supply)
Global Supply Chain & Wholesale Solutions
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TPS77118DGKG4. Our core advantages include:
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and seals to ensure ESD protection and physical integrity.
產品概述
TPS77118DGKG4 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 1.8V 輸出電壓和最大 150mA 的輸出電流。該器件採用 8 引腳 VSSOP 封裝,具有出色的線性和負載調整率,適用於對噪聲敏感的應用。TPS77118 在滿載時典型壓差僅為 170mV,即使在輸入輸出電壓差較小的情況下也能高效工作。它包含使能引腳用於電源排序,以及電源正常輸出用於系統監控。
詳細技術參數
| 參數 |
數值 |
| 輸出電壓 |
1.8V (固定) |
| 輸出電流 |
150mA |
| 典型壓差 |
170mV @ 150mA |
| 輸入電壓範圍 |
2.7V 至 10V |
| 典型靜態電流 |
85µA |
| 電源抑制比 (1kHz) |
60dB |
| 輸出噪聲 (10Hz-100kHz) |
30µV RMS |
| 工作溫度範圍 |
-40°C 至 +125°C |
| 封裝 |
8-VSSOP |
核心特性
- 固定 1.8V 輸出,精度 ±2%
- 低壓差:典型值 170mV @ 150mA
- 低靜態電流:典型值 85µA
- 使能引腳,支持電源管理
- 開漏電源正常輸出
- 過熱關斷和過流保護
- 可使用 1µF 陶瓷電容穩定工作
- 小型 8-VSSOP 封裝 (3.0mm x 3.0mm)
典型應用場景
- 5G 基站電源管理(例如為射頻收發器模擬模塊供電)
- 汽車儀表盤信息娛樂系統(例如為 MCU 內核供電)
- 工業傳感器模塊(例如壓力變送器信號調理)
- 便攜式醫療設備(例如血糖儀模擬前端)
- 物聯網邊緣節點(例如無線傳感器節點電源)
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