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Product Overview
The LP3990TLX-1.5/NOPB is a high-performance, low-dropout (LDO) voltage regulator from Texas Instruments (TI), designed to deliver a fixed output voltage of 1.5V with a maximum output current of 150mA. Housed in a compact 4-DSBGA (1x1) package, this device is ideal for space-constrained applications requiring low noise and high power-supply rejection ratio (PSRR). The LP3990 features a low quiescent current of 25 µA (typical) and a dropout voltage of only 120 mV at 150 mA load, making it suitable for battery-powered devices. It also includes enable logic, overcurrent protection, and thermal shutdown for robust operation.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage |
1.5V (Fixed) |
| Output Current |
150 mA (Max) |
| Dropout Voltage |
120 mV (Typ) at 150 mA |
| Quiescent Current |
25 µA (Typ) |
| PSRR |
60 dB at 1 kHz |
| Output Noise |
30 µVrms (10 Hz to 100 kHz) |
| Input Voltage Range |
2.0V to 6.0V |
| Operating Temperature |
-40°C to +125°C |
| Package |
4-DSBGA (1x1 mm) |
Key Features
- Fixed 1.5V output with ±2% accuracy
- Low dropout voltage: 120 mV at 150 mA
- Ultra-low quiescent current: 25 µA (typical)
- High PSRR: 60 dB at 1 kHz
- Low output noise: 30 µVrms
- Enable pin for power management
- Overcurrent and thermal protection
- Stable with ceramic capacitors (1 µF)
- Small 4-DSBGA package (1x1 mm)
Target Applications
- 5G base stations: Powering RF transceivers and PLLs
- Automotive dashboard: Supply for infotainment and cluster processors
- Portable medical devices: Glucose meters, pulse oximeters
- IoT sensors: Wireless nodes, smart home devices
- Wearables: Smartwatches, fitness trackers
- Industrial control: PLCs, motor drives
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LP3990TLX-1.5/NOPB. 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
LP3990TLX-1.5/NOPB 是德州儀器(TI)推出的一款高性能低壓差線性穩壓器(LDO),提供固定的1.5V輸出電壓,最大輸出電流為150mA。採用緊湊的4-DSBGA(1x1)封裝,非常適合需要低噪聲和高電源抑制比(PSRR)的空間受限應用。LP3990 的典型靜態電流僅為25 µA,在150mA負載下壓差僅為120 mV,非常適合電池供電設備。它還包含使能邏輯、過流保護和熱關斷功能,確保穩定運行。
詳細技術參數
| 參數 |
數值 |
| 輸出電壓 |
1.5V(固定) |
| 輸出電流 |
150 mA(最大) |
| 壓差電壓 |
120 mV(典型,150 mA時) |
| 靜態電流 |
25 µA(典型) |
| PSRR |
60 dB(1 kHz) |
| 輸出噪聲 |
30 µVrms(10 Hz 至 100 kHz) |
| 輸入電壓範圍 |
2.0V 至 6.0V |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
4-DSBGA(1x1 mm) |
核心特性
- 固定1.5V輸出,精度±2%
- 低壓差:150mA時120 mV
- 超低靜態電流:25 µA(典型)
- 高PSRR:1 kHz時60 dB
- 低輸出噪聲:30 µVrms
- 使能引腳,便於電源管理
- 過流和熱保護
- 與陶瓷電容(1 µF)穩定工作
- 小型4-DSBGA封裝(1x1 mm)
典型應用場景
- 5G基站:為射頻收發器和鎖相環供電
- 汽車儀表盤:為信息娛樂和儀表處理器供電
- 便攜醫療設備:血糖儀、脈搏血氧儀
- 物聯網傳感器:無線節點、智能家居設備
- 可穿戴設備:智能手錶、健身追蹤器
- 工業控制:PLC、電機驅動
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 LP3990TLX-1.5/NOPB 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
-
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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現貨庫存,即日發貨:確保現貨充足。下午 4 點前確認訂單,即可安排當天寄出。
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深港聯動,結算靈活:深圳直發全球,物流高效可靠;支援香港銀行戶口轉賬及多幣種結算。
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Escrow 擔保交易:支援 Escrow.com 平台交易,保障買賣雙方權益,小批量訂單亦可安心在線下單。
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BOM 配單與樣板服務:提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。
品質保證與合規
Jasin Chip 承諾所有出貨產品均為原廠正貨,具備完善的品質保證及產品可追溯性。
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100% 原廠正貨:承諾所有供應零件均為原裝現貨,品質嚴格把關,來源清晰可追溯。
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符合 RoHS 認證:所有電子元器件均符合國際環保標準及相關安全認證。
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原廠封裝保護:嚴格保留原廠原始包裝及封條,確保物流過程中的靜電防護 (ESD) 與物理安全。
以上產品均為原廠正貨,提供 BOM 配單及現貨庫存支援,歡迎查詢。
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