UC1825A-SP是TI公司的一款PWM与谐振控制器产品，UC1825A-SP是高速 PWM 控制器，本页介绍了UC1825A-SP的产品说明、应用、特性等，并给出了与UC1825A-SP相关的TI元器件型号供参考。
UC1825A-SP - 高速 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - TI公司（Texas Instruments，德州仪器）
- QML-V Qualified, SMD 5962-87681
- Rad-Tolerant: 30 kRad (Si) TID (1)
- Compatible With Voltage-Mode or Current-Mode Control Methods
- Practical Operation at Switching Frequencies to 1 MHz
- 50-ns Propagation Delay to Output
- High-Current Dual Totem Pole Outputs (2-A Peak)
- Trimmed Oscillator Discharge Current
- Low 100-μA Start-Up Current
- Pulse-by-Pulse Current Limiting Comparator
- Latched Overcurrent Comparator With Full Cycle Restart
- DC-DC Converters
- Supports Various Topologies:
- Push-Pull
- Forward
- Half-Bridge
- Full-Bridge
The UC1825A-SP PWM controller is an improved version of the standard UC1825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Start-up supply current, typically 100 μA, is ideal for offline applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the start-up current specification. In addition each output is capable of 2-A peak currents during transitions.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| UC1825A-SP | CDIP (16) | 19.56 mm × 6.92 mm |
