FAN8729 Fairchild Semiconductor, FAN8729 Datasheet - Page 11

• Manufacturer Part Number: FAN8729
• Description: Motor / Motion / Ignition Controllers & Drivers BLDC+4CH BTL
• Manufacturer: Fairchild Semiconductor
• Type: Spindle Motor Controllerr

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

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