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TDA5145 데이터시트(PDF) 16 Page - NXP Semiconductors

부품명 TDA5145
상세설명  Brushless DC motor drive circuit
PDF  24 Pages
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제조업체  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA5145 데이터시트(HTML) 16 Page - NXP Semiconductors

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June 1994
16
Philips Semiconductors
Product specification
Brushless DC motor drive circuit
TDA5145
Table 4
Priority of function.
Note
1. L = LOW state; H = HIGH state.
BRAKE(1)
TEST(1)
RESET(1)
FUNCTION
L
L
L
normal
L
L
H
reset
L
H
L
test
L
H
H
test
H
L
L
brake
H
L
H
brake
H
H
L
brake
H
H
H
brake
RELIABILITY
It is necessary to protect high current circuits and the
output stages are protected in two ways:
• Current limiting of the ‘lower’ output transistors. The
‘upper’ output transistors use the same base current as
the conducting ‘lower’ transistor (+15%). This means
that the current to and from the output stages is limited.
• Thermal protection of the six output transistors is
achieved by each transistor having a thermal sensor
that is active when the transistor is switched on. The
transistors are switched off when the local temperature
becomes too high.



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