4254GS, 4255, 42550 Selling Leads, Datasheet
MFG:INFINEON Package Cooled:SOP8 D/C:09+
4254GS, 4255, 42550 Datasheet download
Part Number: 4254GS
MFG: INFINEON
Package Cooled: SOP8
D/C: 09+
4254GS, 4255, 42550
- Table of contents:
Info of 4254GS
Info of 4255
Info of 42550
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About 4250 GROUP
PDF/DataSheet Download
Datasheet: 4250 GROUP
File Size: 339415 KB
Manufacturer: Mitsubishi
Download : Click here to Download
About 4255
PDF/DataSheet Download
Datasheet: 4255
File Size: 146388 KB
Manufacturer: ALLEGRO [Allegro MicroSystems]
Download : Click here to Download
About 4250 GROUP
PDF/DataSheet Download
Datasheet: 4250 GROUP
File Size: 339415 KB
Manufacturer: Mitsubishi
Download : Click here to Download
4255 General Description
To ease and simplify the design effort, the user only provides the following signals: (a) direction, (b) stepping clock (8x the full-step frequency), (c) mode logic (three inputs determine the operation for full, half, quarter, or eighth stepping), (d) reset input (initiates a 'detent' position), and (e) recirculation control (this allows estab- lishing the percent of fast- vs slow-decay in the phase winding). The microcontroller program providess auto- matic recirculation control. This eliminates the need for evaluating the impact of stepping rate vs the sinusoidal current profile.
Although recirculation control can provide slight improvements (i.e., lower current ripple, reduced motor heating [a few degrees], and diminish audible noise levels [minimal differences]), this entails an evaluation of the motor (and step frequencies) to determine the proper ratio of fast- and slow-decay. The benefits of tuning the recirculation ratios are small, and the time and effort required can be considerable. Hence, the uninitiated user should opt for the automatic recirculation control, and avoid the essentially unnecessary activity.
Although recirculation control can provide slight improvements (i.e., lower current ripple, reduced motor heating [a few degrees], and diminish audible noise levels [minimal differences]), this entails an evaluation of the motor (and step frequencies) to determine the proper ratio of fast- and slow-decay. The benefits of tuning the recirculation ratios are small, and the time and effort required can be considerable. Hence, the uninitiated user should opt for the automatic recirculation control, and avoid the essentially unnecessary activity.
4255 Maximum Ratings
Supply Voltage, VDD .......................... 7.0 V
Input Voltage Range,
VI ........................ -0.3 V to VDD + 0.6 V
RESET Voltage, VRESET ...................... 14 V
Input Clamp Current, IIK ............... ±20 mA
Output Clamp Current, IOK............ ±20 mA
Operating Temperature Range,
TA .................................... 0°C to +70°C
Storage Temperature Range,
TS .............................. -55°C to +150°C
Input Voltage Range,
VI ........................ -0.3 V to VDD + 0.6 V
RESET Voltage, VRESET ...................... 14 V
Input Clamp Current, IIK ............... ±20 mA
Output Clamp Current, IOK............ ±20 mA
Operating Temperature Range,
TA .................................... 0°C to +70°C
Storage Temperature Range,
TS .............................. -55°C to +150°C
4255 Features
Full-, Half-, Quarter-, Eighth-, or Sixteenth-Step Increments
DC to 20 MHz Clock Input
Power-On Reset
Brown-Out Reset
High-Speed CMOS Technology Low Power, <20 mA @ 5 V, 20 MHz
(Typically 9 mA)
DC to 20 MHz Clock Input
Power-On Reset
Brown-Out Reset
High-Speed CMOS Technology Low Power, <20 mA @ 5 V, 20 MHz
(Typically 9 mA)
4255 Connection Diagram
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