UC1637 - Unitrode

UC1637 DC Motor Controller

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 bidirectional 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.

Features

• 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 BLOCK DIAGRAM DESCRIPTION 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 bidirectional drive circuits. When used to replace conventional drivers.