PBL3770A Description
PBL 3770A is a bipolar monolithic circuit intended to control and drive the current in one winding of a stepper motor. It is a high power version of PBL 3717 and special care has been taken to optimize the power handling capability without suffering in reliability. The circuit consists of a LS-TTL patible logic input stage, a current sensor, a monostable multivibrator and a high power H-bridge output stage.
PBL3770A Key Features
- Half-step and full-step operation
- Switched mode bipolar constant current drive
- Wide range of current control 5 -1800 mA
- Wide voltage range 10
- Designed for unstabilized motor supply voltage
- Current levels can be selected in steps or varied continuously
- Thermal overload protection
- CT Current Sensor
- VCC VI V IH V IL VA V
- R T- C T