TA8490 데이터 시트보기 (PDF) - Toshiba
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TA8490 Datasheet PDF : 22 Pages
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TA8490F
FUNCTIONAL DESCRIPTION
This IC is a 3−phase, full−wave brushless DC motor driver of the current−control / current−drive type.
It contains in its upper stage a PNP discrete power transistor, which, because of the Multi−Chip Package (MCP)
structures provides high torque and thermal efficiency.
In addition, when combined with a switching regulator, its efficiency can be increased still further.
• Control amp input circuit
The Common mode input voltage ranges for both VC and Vref are 1.0 to 4.0 V.
The control input−to−drive output gain is 1.0A / V (typ.), whose characteristic is shown below.
The input is provided with a dead−zone area whose voltage width is 100 mV (typ.)
• Mode select / short brake circuit
gm
=
∆IRF
∆VC
= 1.0[Α / V](typ.)(at
RF
= 0.3Ω）
8
2003-10-07
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