A newer version of this product is available

open-in-new Compare alternates
This product continues to be available for existing customers. New designs should consider an alternate product.
Similar functionality to the compared device
DRV8706-Q1 ACTIVE Automotive 40-V H-bridge smart gate driver with offline diagnostics & inline current sense am Increased voltage range (40V), gate driver, inline current sense amplifier
DRV8904-Q1 ACTIVE Automotive, 40V, 6A 4 channel half-bridge motor driver with advanced diagnostics Smaller pacakge size, parallel modes, low power sleep mode, advanced diagnostics

Product details

Number of full bridges 1 Vs (min) (V) 2.5 Vs ABS (max) (V) 20 Rating Military Operating temperature range (°C) 0 to 70
Number of full bridges 1 Vs (min) (V) 2.5 Vs ABS (max) (V) 20 Rating Military Operating temperature range (°C) 0 to 70
CDIP (J) 18 159.852 mm² 23.1 x 6.92
  • 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
  • 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.

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.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet Switched Mode Controller for DC Motor Drive datasheet 05 Sep 1999
White paper How smart tune regulates current in stepper motors (Rev. A) 19 Mar 2019
Application note U-120 A Simplified Approach to DC Motor Modeling for Dynamic Stability Analysis 05 Sep 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Package Pins CAD symbols, footprints & 3D models
CDIP (J) 18 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos