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UC1825-SP
- QML-V Qualified, SMD 5962-87681
- Rad-Tolerant: 30 kRad (Si) TID(1)
- Compatible With Voltage- or Current-Mode Topologies
- Practical Operation Switching Frequencies to 1 MHz
- 50-ns Propagation Delay-to-Output
- High-Current Dual Totem Pole Outputs (1.5 A Peak)
- Wide Bandwidth Error Amplifier
- Fully Latched Logic With Double-Pulse Suppression
- Pulse-by-Pulse Current Limiting
- Soft Start/Maximum Duty-Cycle Control
- Undervoltage Lockout With Hysteresis
- Low Start-Up Current (1.1 mA)
(1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details.
The UC1825 PWM control device is optimized for high-frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.
Protection circuitry includes a current limit comparator with a 1-V threshold, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty-cycle clamp. The logic is fully latched to provide jitter-free operation and prohibit multiple pulses at an output. An undervoltage lockout section with 800 mV of hysteresis assures low start up current. During undervoltage lockout, the outputs are high impedance.
This device features totem pole outputs designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is designed as a high level.
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技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | High-Speed PWM Controller. 数据表 (Rev. A) | 2012-3-22 | |||
| * | 辐射与可靠性报告 | UC1825-SP Radiation Test Report (5962-8768104VEA) | 2015-5-8 | |||
| * | SMD | UC1825-SP SMD 5962-87681 | 2016-7-8 | |||
| 选择指南 | TI Space Products (Rev. L) | 2026-3-27 | ||||
| 应用手册 | 气密性封装回流焊曲线、端接镀层以及引线裁切与成型 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2025-11-20 | |
| 应用手册 | 重离子轨道环境单粒子效应估算 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2025-7-7 | |
| 更多文献资料 | TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) | 2025-2-20 | ||||
| 应用手册 | QML flow, its importance, and obtaining lot information (Rev. C) | 2023-8-30 | ||||
| 应用手册 | 单粒子效应置信区间计算 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2022-12-2 | |
| 电子书 | 电子产品辐射手册 | 2022-5-7 | ||||
| 应用简报 | Controlling Input Power for Present and Next-Generation Power Controllers | PDF | HTML | 2020-12-14 | |||
| 应用手册 | DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer | 2020-8-21 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| LCCC (FK) | 20 | Ultra Librarian |
| CDIP (J) | 16 | Ultra Librarian |
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