AM4953M8-G1 BCDSEMI [BCD Semiconductor Manufacturing Limited], AM4953M8-G1 Datasheet - Page 10

• Manufacturer Part Number: AM4953M8-G1
• Description: BTL Drive Single-phase Full-wave Fan Motor Driver
• Manufacturer: BCDSEMI [BCD Semiconductor Manufacturing Limited]

Typical Application
Note 2: Adding D1 can protect the IC from destruction by reverse connection. If D1 is used, it is necessary to
insert a capacitor C1 to provide a regenerative current route. Similarly, if there is no nearby capacitor on the fan
power supply line, C1 will also be necessary to improve reliability. Its capacity should be larger than 2.2μF.
Note 3: If the line between Hall sensor output and Hall sensor input of IC is long, the noise may occur in this line.
But it can be eliminated by adding a capacitor C3.
Note 4: Each of R1 and R2 is recommended to be 51kΩ typical. R3 is recommended to be 2k and must be added
when V
Note 5: The package of AH921 is SOT-23-3. If it is packaged in TO-92S-3，please exchange IN- with IN+.
Aug. 2011 Rev. 1. 2
BTL Drive Single-phase Full-wave Fan Motor Driver
CC
is larger than 20V.
HALL
D1
C1
(Note 5)
Figure 11. Typical Application of AM4953
C2
AH921
R3
IN+
IN-
CT
OUT1
AM4953
(Note 4)
HB
L
10
OUT2
GND
VCC
RD
FG
C2
HB
IN+
IN-
CT
AM4953
VCC
BCD Semiconductor Manufacturing Limited
(Note 2)
V
OUT2
OUT1
C1
RD
GND
(Note 4)
RD
FG
R1
D1
R1
(Note 4)
V
FG
V
RD
R2
V
L
FG
R2
Data Sheet
AM4953