FAN8729 Fairchild Semiconductor, FAN8729 Datasheet - Page 11
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FAN8729
Manufacturer Part Number
FAN8729
Description
Motor / Motion / Ignition Controllers & Drivers BLDC+4CH BTL
Manufacturer
Fairchild Semiconductor
Type
Spindle Motor Controllerr
Datasheet
1.FAN8729.pdf
(24 pages)
Specifications of FAN8729
Operating Temperature Classification
Commercial
Package Type
PQFP
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
13.2V
Operating Supply Voltage
4.5 V to 13.2 V
Supply Current
16.5 mA
Mounting Style
SMD/SMT
Package / Case
QFPH-48
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
FAN8729
Application Information
1. MUTE Function
• MUTE circuit turns BTL output ON/OFF.
• When MUTE terminal (pin42, pin43) is OPEN, or terminal voltage is
• When MUTE terminal (pin42, pin43) is voltage is higher than 1.5V,
• Feature Table.
2. TSD Function
• TSD circuit intercepts all IC output to protect the IC against high
• When chip temperature rises above 165
• When chip temperature falls below 140
• TSD has hysteresis of 25
3. TSD Monitor Function
• TSD monitor circuit displays TSD status.
• When TSD is ON, pin18 is HIGH.
• When TSD is OFF, pin18 is LOW.
• Since output pin(PIN18) is open-collector, pull-up resistance should be
• Feature Table.
11
MUTE circuit voltage
lower than 1V, BTL is disable.
BTL output operates normally.
temperatures.
disable.
operates normally.
attached outside.
Below 1V or Open
Above 1.5V
TSD On
TSD Off
TSD
°C.
MUTE status
Pin18
High
Low
OFF
ON
°C, BTL and spindle output
°C, BTL and spindle output is
Hysteresis
42
43
VCC
TSD
Ihys
R(external)
18
R1
R2
R3
SVCC
IREF
Q6
Q0
Q5
SVCC
Output driver
20k
Bias