SA1469XH
5) The output stage is the BTL driver and the motor is rotating in forward direction by operating TR Q1 and TR
Q4. on the other hand, if TR Q2 and TR Q3 is operating, the motor is rotating in reverse direction.
6) When the input voltage through the pin # 3 is below the V
, then the direction of the motor in forward
REF
direction.
7) When the input voltage through the pin # 3 is above the V
direction.
, then the direction of the motor in reverse
REF
8) If it is desired to change the gain, then the pin # 4 or # 24 can be used.
5. RADIATION FIN IS CONNECTING TO THE INTERNAL GND OF THE PACKAGE.
Connect the fin to the external GND.
6. REGULATOR
This is a typical series regulator that generates a reference voltage internally. A PNP low saturation type tran-
sistor must be connected.
REG
Attached
PNP
VOUT
REO
VREF
Oscillation prevention
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.4
2008.07.23
Http://www.silan.com.cn
Page 6 of 11
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