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Product Overview
The LP2985A-29DBVT is a high-performance low-dropout (LDO) voltage regulator from Texas Instruments, offering a fixed output voltage of 2.9V with a maximum output current of 150mA. Housed in a compact SOT-23-5 package, this device is designed for space-constrained applications requiring low noise and high power supply rejection ratio (PSRR). Its ultra-low dropout voltage (typically 300mV at full load) ensures efficient operation even when the input voltage is close to the output, making it ideal for battery-powered systems. The LP2985A-29DBVT features a shutdown mode that reduces quiescent current to less than 1µA, extending battery life in portable devices.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage |
2.9V (Fixed) |
| Output Current |
150mA (Max) |
| Dropout Voltage |
300mV (Typical at 150mA) |
| Input Voltage Range |
2.2V to 16V |
| Quiescent Current |
1.2mA (Typical) |
| Shutdown Current |
<1µA |
| PSRR |
65dB at 1kHz |
| Output Noise |
30µVrms (10Hz to 100kHz) |
| Operating Temperature |
-40°C to +125°C |
| Package |
SOT-23-5 |
Key Features
- Ultra-low dropout voltage: 300mV at 150mA
- Low quiescent current: 1.2mA typical, <1µA in shutdown
- High PSRR: 65dB at 1kHz
- Low output noise: 30µVrms
- Fixed output voltage: 2.9V
- Stable with low ESR ceramic capacitors (1µF)
- Overcurrent and overtemperature protection
- Small SOT-23-5 package
Target Applications
- 5G base station power management: powering RF transceivers and control logic
- Automotive dashboard displays: providing clean supply for infotainment systems
- Portable medical devices: glucose monitors, pulse oximeters
- Industrial sensors: pressure transmitters, temperature probes
- Battery-powered IoT modules: smart locks, environmental monitors
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LP2985A-29DBVT. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
LP2985A-29DBVT 是德州儀器(TI)推出的一款高性能低壓差穩壓器(LDO),提供固定的 2.9V 輸出電壓,最大輸出電流為 150mA。器件採用緊湊的 SOT-23-5 封裝,適用於對空間有限且需要低噪聲和高電源抑制比(PSRR)的應用。其超低壓差電壓(滿載時典型值 300mV)確保即使在輸入電壓接近輸出電壓時也能高效運行,非常適合電池供電系統。LP2985A-29DBVT 具有關斷模式,可將靜態電流降至 1µA 以下,延長便攜設備的電池壽命。
詳細技術參數
| 參數 |
數值 |
| 輸出電壓 |
2.9V(固定) |
| 輸出電流 |
150mA(最大) |
| 壓差電壓 |
300mV(典型值,150mA 時) |
| 輸入電壓範圍 |
2.2V 至 16V |
| 靜態電流 |
1.2mA(典型值) |
| 關斷電流 |
<1µA |
| 電源抑制比 |
65dB(1kHz 時) |
| 輸出噪聲 |
30µVrms(10Hz 至 100kHz) |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
SOT-23-5 |
核心特性
- 超低壓差電壓:150mA 時典型值 300mV
- 低靜態電流:典型值 1.2mA,關斷時 <1µA
- 高電源抑制比:1kHz 時 65dB
- 低輸出噪聲:30µVrms
- 固定輸出電壓:2.9V
- 可使用低 ESR 陶瓷電容(1µF)穩定工作
- 過流和過溫保護
- 小型 SOT-23-5 封裝
典型應用場景
- 5G 基站電源管理:為射頻收發器和控制邏輯供電
- 汽車儀表板顯示:為信息娛樂系統提供乾淨電源
- 便攜醫療設備:血糖儀、脈搏血氧儀
- 工業傳感器:壓力變送器、溫度探頭
- 電池供電的 IoT 模塊:智能鎖、環境監測器
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 LP2985A-29DBVT 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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全天候環球客戶支援:專業團隊為您提供即時報價及技術支援,無需漫長等待。
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