Texas Instruments UC1637-SP
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. This monolithic device contains a sawtooth oscillator, error amplifier, and two PWM comparators with ±100-mA output stages as standard features.| Part No. | UC1637-SP |
|---|---|
| Datasheet | UC1637-SP Download |
| Manufacturer |  Texas Instruments |
| Description | SWITCHED MODE CONTROLLER |
| Buy | Stock & Price |
FEATURES
1● QML-V Qualified, SMD 5962-89957
● Rad Tolerant: 30 kRad(Si) TID (1) – TID Dose Rate = 10 mRad/sec
● Single or Dual Supply Operation
● ±2.5-V to ±20-V Input Supply Range
● ±5% Initial Oscillator Accuracy; ±10% Over Temperature
● Pulse-by-Pulse Current Limiting
● Under-Voltage Lockout
● Shutdown Input with Temperature Compensated 2.5-V Threshold
● Uncommitted PWM Comparators for Design (1) Radiation tolerance is a typical value based upon initial device qualification. Radiation Lot Acceptance Testing is available contact factory for details. Flexibility
● Dual 100-mA Source/Sink Output Drivers W PACKAGE (TOP VIEW)
DESCRIPTION
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. Protection circuitry includes under-voltage lockout, pulse-by-pulse current limiting, and a shutdown port with a 2.5-V temperature compensated threshold. The UC1637 is characterized for operation over the full space temperature range of –55°C to 125°C.
