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PBL3770A - High Performance Stepper Motor Drive Circuit

General 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.

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 - 45 V.
  • Designed for unstabilized motor supply voltage.
  • Current levels can be selected in steps or varied continuously.
  • Thermal overload protection. VCC Schmitt Trigger Time Delay VMM VMM Phase I 1 1 ≥1 ≥1 P B L B A P 70 37 MA I0 V R MB & +.
  • +.
  • +.

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Datasheet Details

Part number PBL3770A
Manufacturer Ericsson
File Size 140.85 KB
Description High Performance Stepper Motor Drive Circuit
Datasheet download datasheet PBL3770A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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February 1999 PBL 3770A High Performance Stepper Motor Drive Circuit 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 compatible logic input stage, a current sensor, a monostable multivibrator and a high power H-bridge output stage. The circuit is pin-compatible with the PBL 3717 industry-standard driver. Two PBL 3770A and a small number of external components form a complete control and drive unit for LS-TTL or microprocessor-controlled stepper motor systems. Key Features • Half-step and full-step operation.