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Product Overview
The LM2903ST from STMicroelectronics is a dual low-power voltage comparator designed for industrial and automotive applications. It operates from a single power supply over a wide voltage range of 2V to 36V (or dual supplies ±1V to ±18V) and features low supply current (0.4mA per comparator). The open-collector output allows wired-AND connection and interface with various logic families. Housed in the compact 8-MINISO package, it is ideal for space-constrained designs.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage Range |
2V to 36V (single), ±1V to ±18V (dual) |
| Supply Current (per comparator) |
0.4 mA typ |
| Input Offset Voltage |
±7 mV max at 25°C |
| Input Bias Current |
25 nA typ |
| Response Time |
1.3 μs typ |
| Output Type |
Open-collector |
| Operating Temperature |
-40°C to +125°C |
| Package |
8-MINISO (3x3 mm) |
Key Features
- Dual comparator in small 8-MINISO package
- Wide supply voltage range: 2V to 36V
- Low supply current: 0.4 mA per comparator
- Low input offset voltage: ±7 mV max
- Open-collector output for flexible interfacing
- Extended temperature range: -40°C to +125°C
Target Applications
- 5G base station power supply monitoring (overvoltage/undervoltage detection)
- Automotive dashboard warning systems (battery voltage monitoring)
- Industrial sensor threshold detection (temperature, pressure)
- Battery management systems in electric vehicles
- Portable instrumentation and data acquisition
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LM2903ST. 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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orders confirmed before 4 PM are shipped the same day.
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BOM Kitting & Sampling Services: Specialized sourcing for
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Quality Assurance & Compliance
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with full quality assurance and traceability.
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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
LM2903ST 是意法半導體推出的雙路低功耗電壓比較器,專為工業和汽車應用設計。它可在 2V 至 36V 的寬電源電壓範圍內工作(或雙電源 ±1V 至 ±18V),每路比較器僅消耗 0.4mA 電流。開集電極輸出支持線與連接,可與多種邏輯系列接口。採用緊湊的 8-MINISO 封裝,適合空間受限的設計。
詳細技術參數
| 參數 |
數值 |
| 電源電壓範圍 |
2V 至 36V(單電源),±1V 至 ±18V(雙電源) |
| 每路靜態電流 |
典型 0.4 mA |
| 輸入失調電壓 |
25°C 時最大 ±7 mV |
| 輸入偏置電流 |
典型 25 nA |
| 響應時間 |
典型 1.3 μs |
| 輸出類型 |
開集電極 |
| 工作溫度範圍 |
-40°C 至 +125°C |
| 封裝 |
8-MINISO(3x3 mm) |
核心特性
- 雙路比較器,小型 8-MINISO 封裝
- 寬電源電壓範圍:2V 至 36V
- 低靜態電流:每路 0.4 mA
- 低輸入失調電壓:最大 ±7 mV
- 開集電極輸出,靈活接口
- 寬溫度範圍:-40°C 至 +125°C
典型應用場景
- 5G 基站電源監控(過壓/欠壓檢測)
- 汽車儀表盤警告系統(電池電壓監測)
- 工業傳感器閾值檢測(溫度、壓力)
- 電動汽車電池管理系統
- 便攜式儀器和數據採集
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