la6586t Sanyo Semiconductor Corporation, la6586t Datasheet - Page 7

• Manufacturer Part Number: la6586t
• Description: Btl Driver Single-phase Full-wave Fan Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Sample Application Circuit
*1
*2
*3
*4
*5
To enhance the reliability, it is necessary to insert a capacitor Cr to secure the regenerative current route.
To obtain Hall bias from V CC , carry out 1/2×V CC bias as shown in the figure. Linear driving is made through
voltage control of the coil by amplifying the Hall output. When the Hall element output is large, the startup
performance and efficiency are improved. Adjustment of the Hall element can reduce the noise further.
To obtain Hall bias from the HB pin, carry out constant-voltage bias at about 1.5 V. which enables the Hall
element to generate the stable Hall output satisfactory in temperature characteristics. The Hall output amplitude
is adjusted with R1. (In the case of V CC = 12 V, *2 proves advantageous in terms of heat generation in IC.) This
applies to the case of MFP-10S.
Keep this open when not used.
When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring.
In this case, insert the capacitor as shown in the figure.
On board element
Di
*1
*2
Cr
R2
R2
H
*5
LA6586T
HB
IN-
IN+
CT
V CC
GND
OUT2
OUT1
FG
RD
*3
*4
H
R1
No.8348-7/8
HB
IN-
IN+