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Product Overview
The UC2638DWTR from Texas Instruments is a high-performance dual-output PWM controller designed for isolated power supplies. It integrates two independent PWM channels with 1MHz switching frequency, enabling compact and efficient power conversion. The device operates from a 4.5V to 15V supply and features programmable soft-start, synchronization capability, and under-voltage lockout. Housed in a 20-SOIC package, it is ideal for telecom, industrial, and automotive applications requiring reliable and precise power regulation.
Detailed Technical Specifications
| Parameter |
Value |
| Input Voltage Range |
4.5V to 15V |
| Output Channels |
2 (Dual PWM) |
| Switching Frequency |
Up to 1 MHz |
| Duty Cycle Range |
0% to 100% |
| Reference Voltage |
2.5V ±1% |
| Soft-Start |
Programmable |
| Synchronization |
External clock up to 1 MHz |
| Under-Voltage Lockout |
4.3V (typical) |
| Operating Temperature |
-40°C to +125°C |
| Package |
20-SOIC |
Key Features
- Dual independent PWM outputs with 1 MHz switching frequency
- Wide input voltage range: 4.5V to 15V
- Programmable soft-start for controlled startup
- External synchronization capability for noise-sensitive systems
- Under-voltage lockout with hysteresis
- 2.5V precision reference (±1%)
- Low startup current (1 mA typical)
- Thermal shutdown protection
Target Applications
- 5G base station power modules
- Telecom rectifiers and DC-DC converters
- Industrial power supplies for PLC and motor drives
- Automotive infotainment and dashboard power
- LED lighting drivers
- Battery charging systems
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
UC2638DWTR. 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
UC2638DWTR 是德州儀器推出的一款高性能雙輸出 PWM 控制器,專為隔離式電源設計。它集成了兩個獨立的 PWM 通道,開關頻率高達 1MHz,可實現緊湊高效的電源轉換。器件工作電壓範圍為 4.5V 至 15V,具有可編程軟啟動、同步功能和欠壓鎖定。採用 20-SOIC 封裝,適用於電信、工業和汽車等需要可靠精確電源調節的應用。
詳細技術參數
| 參數 |
數值 |
| 輸入電壓範圍 |
4.5V 至 15V |
| 輸出通道 |
2(雙 PWM) |
| 開關頻率 |
最高 1 MHz |
| 佔空比範圍 |
0% 至 100% |
| 參考電壓 |
2.5V ±1% |
| 軟啟動 |
可編程 |
| 同步功能 |
外部時鐘最高 1 MHz |
| 欠壓鎖定 |
4.3V(典型) |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
20-SOIC |
核心特性
- 雙獨立 PWM 輸出,開關頻率 1 MHz
- 寬輸入電壓範圍:4.5V 至 15V
- 可編程軟啟動,實現受控啟動
- 外部同步功能,適用於噪聲敏感系統
- 帶滯回的欠壓鎖定
- 2.5V 精密參考電壓(±1%)
- 低啟動電流(典型 1 mA)
- 熱關斷保護
典型應用場景
- 5G 基站電源模塊
- 電信整流器和 DC-DC 轉換器
- 工業電源,用於 PLC 和電機驅動
- 汽車信息娛樂系統和儀表板電源
- LED 照明驅動器
- 電池充電系統
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 UC2638DWTR 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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