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UC1637
- Single or Dual Supply Operation
- ±2.5V to ±20V Input Supply Range
- ±5% Initial Oscillator Accuracy; ±10% Over Temperature
- Pulse-by-Pulse Current Limiting
- Under-Voltage Lockout
- Shutdown Input with Temperature Compensated 2.5V Threshold
- Uncommitted PWM Comparators for Design Flexibility
- Dual 100mA, Source/Sink Output Drivers
The UC1637 is a pulse width modulator circuit intended to be used for a variety of PWM motor drive and amplifier applications requiring either uni-directional or bi-directional drive circuits. When used to replace conventional drivers, this circuit can increase efficiency and reduce component costs for many applications. All necessary circuitry is included to generate an analog error signal and modulate two bi-directional pulse train outputs in proportion to the error signal magnitude and polarity.
This monolithic device contains a sawtooth oscillator, error amplifier, and two PWM comparators with ±100mA output stages as standard features. Protection circuitry includes under-voltage lockout, pulse-by-pulse current limiting, and a shutdown port with a 2.5V temperature compensated threshold.
The UC1637 is characterized for operation over the full military temperature range of -55°C to +125°C, while the UC2637 and UC3637 are characterized for -25°C to +85°C and 0°C to +70°C, respectively.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | Switched Mode Controller for DC Motor Drive datasheet | 1999年 9月 5日 | |
| * | SMD | UC1637 SMD 5962-89957 | 2016年 6月 21日 | |
| White paper | How smart tune regulates current in stepper motors (Rev. A) | 2019年 3月 19日 | ||
| Application note | U-120 A Simplified Approach to DC Motor Modeling for Dynamic Stability Analysis | 1999年 9月 5日 |
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- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
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