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UC1637-SP Scheda tecnica(PDF) 1 Page - Texas Instruments |
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UC1637-SP Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 11 page WPACKAGE (TOP VIEW) UC1637-SP www.ti.com SLUS950 – FEBRUARY 2010 RAD-TOLERANT CLASS-V, SWITCHED MODE CONTROLLER FOR DC MOTOR DRIVE Check for Samples: UC1637-SP 1 FEATURES Flexibility • QML-V Qualified, SMD 5962-89957 • Dual 100-mA Source/Sink Output Drivers • 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. 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 outputs in proportion to the error signal magnitude and polarity. This monolithic device contains a sawtooth oscillator, error amplifier, and two PWM comparators with ±100-mA output stages as standard features. 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. ORDERING INFORMATION TA PACKAGE ORDERABLE PART NUMBER TOP-SIDE MARKING –55°C to 125°C CFP-20 5962-8995701VSA UC1637W-SP 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2010, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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