UC1637-SP
www.ti.com SLUS950 – FEBRUARY 2010 RAD-TOLERANT CLASS-V, SWITCHED MODE CONTROLLER
FOR DC MOTOR DRIVE
Check for Samples: UC1637-SP FEATURES 1 (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
В±2.5-V to В±20-V Input Supply Range
В±5% Initial Oscillator Accuracy; В±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 Flexibility
Dual 100-mA Source/Sink Output Drivers
W PACKAGE
(TOP VIEW) Radiation tolerance is a typical value based upon initial device
qualification. Radiation Lot Acceptance Testing is available contact factory for details. 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 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 …
