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Product Overview
The TPS7A4501DCQR from Texas Instruments is a high-performance, low-dropout (LDO) linear voltage regulator designed for applications requiring low noise, high PSRR, and fast transient response. It delivers up to 1.5A of output current with a dropout voltage as low as 300mV at full load. The device features an adjustable output voltage from 1.21V to 20V, making it versatile for various power supply needs. Housed in a compact SOT-223-6 package, it is ideal for space-constrained designs.
Detailed Technical Specifications
| Parameter |
Value |
| Output Current |
1.5A |
| Dropout Voltage |
300mV (typical at 1.5A) |
| Output Voltage Range |
1.21V to 20V (adjustable) |
| PSRR |
68dB at 1kHz |
| Output Noise |
13µV RMS (10Hz to 100kHz) |
| Quiescent Current |
1.5mA (typical) |
| Operating Temperature |
-40°C to +125°C |
| Package |
SOT-223-6 |
Key Features
- Low dropout voltage: 300mV at 1.5A
- Adjustable output voltage from 1.21V to 20V
- High PSRR: 68dB at 1kHz
- Low output noise: 13µV RMS
- Fast transient response
- Stable with low ESR output capacitors (10µF ceramic)
- Built-in current limit and thermal shutdown protection
- Enable pin for power sequencing
Target Applications
- 5G base station power supplies (e.g., for RF transceivers)
- Automotive infotainment and dashboard displays
- Industrial sensor modules and data acquisition systems
- Medical imaging equipment (e.g., ultrasound systems)
- Portable battery-powered devices requiring low noise
Global Supply Chain & Wholesale Solutions
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and seals to ensure ESD protection and physical integrity.
產品概述
TPS7A4501DCQR 是德州儀器(TI)推出的一款高性能低壓差線性穩壓器(LDO),專為需要低噪聲、高電源抑制比(PSRR)和快速瞬態響應的應用而設計。它可提供高達 1.5A 的輸出電流,滿載時壓差低至 300mV。該器件具有可調輸出電壓範圍(1.21V 至 20V),適用於多種電源需求。採用緊湊的 SOT-223-6 封裝,適合空間受限的設計。
詳細技術參數
| 參數 |
數值 |
| 輸出電流 |
1.5A |
| 壓差電壓 |
300mV(典型值,1.5A 時) |
| 輸出電壓範圍 |
1.21V 至 20V(可調) |
| 電源抑制比 |
68dB(1kHz 時) |
| 輸出噪聲 |
13µV RMS(10Hz 至 100kHz) |
| 靜態電流 |
1.5mA(典型值) |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
SOT-223-6 |
核心特性
- 低壓差:1.5A 時僅 300mV
- 可調輸出電壓:1.21V 至 20V
- 高 PSRR:1kHz 時 68dB
- 低輸出噪聲:13µV RMS
- 快速瞬態響應
- 與低 ESR 輸出電容(10µF 陶瓷電容)穩定工作
- 內置電流限制和熱關斷保護
- 使能引腳,用於電源排序
典型應用場景
- 5G 基站電源(例如為射頻收發器供電)
- 汽車信息娛樂系統和儀表盤顯示
- 工業傳感器模塊和數據採集系統
- 醫療成像設備(例如超聲系統)
- 便攜式電池供電設備(需要低噪聲)
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