LB1937T Datasheet, PDF (1/7 Pages) Sanyo Semicon Device – 1-2 Phase Excitation Stepping Motor Driver

Ordering number : EN7231
LB1937T
Monolithic Digital IC
1-2 Phase Excitation
Stepping Motor Driver
http://onsemi.com
Overview
The LB1937T is a 2-phase bipolar drive stepping motor driver IC that supports low-voltage drive and can drive two
stepping motors at the same time. The LB1937T's miniature package and minimal number of external components
reduces the required mounting area. It also provides high-efficiency motor drive and can reduce circuit current
consumption. Since it provides a current detection pin and supports PWM control input, it can be used to implement
current chopper control at the system level. The LB1937T is optimal for the stepping motors used for lens drive in
digital cameras, printers, and movie cameras.
Functions and Features
• Low saturation voltage forward/reverse motor driver (VO sat = 0.3V at IO = 200mA)
• Four H-bridge channels
• Wide usable voltage range (Allowable voltage range: 2.5V to 9.5V, absolute maximum rating: 10.5V)
• Supports PWM input (Low power consumption can be achieved in slow delay mode that uses IN1/IN2 = H/H logic.)
• Motor (coil) current detection pin
• Built-in thermal shutdown circuit
• Thin form factor miniature package (TSSOP24)
Semiconductor Components Industries, LLC, 2013
June, 2013
32207 TI PC B8-5899,7386 No.7231-1/7