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Fairchild Fan8412M F8413M Data Handbook

Summary

Optimize thermal management with this high-performance motor predriver, built for DC cooling fans operating over a wide voltage range of 4V to 28V. The integrated circuit ensures prolonged operational reliability by incorporating advanced features such as automatic restart and crystal-clear motor lock detection. This manual serves as a comprehensive guide for engineers and product designers, detailing all essential electrical specifications, integration schematics, and application guidelines necessary for robust HVAC or enclosed cooling system design.

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www.fairchildsemi.com

FAN8412M/FAN8413M 2 Phase Half Wave BLDC Motor Predriver

Features Description A wide range of operation voltage: 4V to 28V The FAN8412M/FAN8413M is a monolithic integrated Locked motor protection with open collector circuit, and suitable for DC cooling fan motors predriver. alarm out or speed out and auto retry Compact package: 8-SOP-225

8-SOP-225

Typical Applications Ordering Information DC cooling fan motor

Device Package Operating Temp. FAN8412M 8-SOP-225 −40°C ~ 95°C FAN8412MX 8-SOP-225 −40°C ~ 95°C FAN8413M 8-SOP-225 −40°C ~ 95°C FAN8413MX 8-SOP-225 −40°C ~ 95°C FAN8412M_NL 8-SOP-225 −40°C ~ 95°C FAN8412MX_NL 8-SOP-225 −40°C ~ 95°C FAN8413M_NL 8-SOP-225 −40°C ~ 95°C FAN8413MX_NL 8-SOP-225 −40°C ~ 95°C Note

X : Tape & Reel

NL : Lead Free

Rev.1.0.3

©2004 Fairchild Semiconductor Corporation

Page Summary Contents For Fairchild Fan8412M F8413M Data Handbook

Page 1 www.fairchildsemi.com FAN8412M/FAN8413M 2 Phase Half Wave BLDC Motor Predriver Features Description A wide range of operation voltage: 4V to 28V The FAN8412M/FAN8413M is a monolithic integrated Locked...
Page 2 FAN8412M/FAN8413M Block Diagram VCC OUTB Commutation OUTA & Control AL / TACO LD Pin Definitions Pin Number Pin Name I/O Pin Function Description Remark VCC Supply voltage IN+ Hall input + AL Alar...
Page 3 FAN8412M/FAN8413M Equivalent Circuits Description Pin No. Internal Circuit Commutation Lock detector Lock detector & Automatic Commutation restart VLDCP VLDCL
Page 4 FAN8412M/FAN8413M Absolute Maximum Ratings (Ta = 25°C) Parameter Symbol Value Unit Maximum Power Supply Voltage VCCMAX Maximum Power Dissipationnote1 PDMAX m W Thermal Resistancenote1 ΘJA °C/W Maximum...
Page 5 FAN8412M/FAN8413M Electrical Characteristics (Ta=25°C, VCC=12V unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit TOTAL Supply Current ICC When output is off. 3.2 5.0 m A HALL...
Page 6 FAN8412M/FAN8413M Application Information 1. Lock Detection & Automatic Restart Hall Input Output TOFF TON VLDCL VLDCP Motor lock Motor lock detected cleared Motor lock Motor restart FAN8412M/FAN8...
Page 7 FAN8412M/FAN8413M 2. Hall Amplifier Input Block IN+ C1 FAN8412M/FAN8413M FAN8412/13M C2 R2 Hall IN- Sensor The hall current (IH) is determined by R1, R2 and R3. IH R1 R2 R3+ Where, the R2 is the imped...
Page 8 FAN8412M/FAN8413M Operation Truth Table IN+ IN- OUTA OUTB AL TACO Remark High Low High Low Low High Rotating Low High Low High Low Low Low or High Low or High Low or High Low or High High Low or High ...
Page 9 FAN8412M/FAN8413M Typical Application Circuits1 (12V / 24V) VCC OUTB D3 D1 VS Commutation OUTA & Control VCC 7FAN8412M/ Q2 VSignal R4 FAN8413M R5 Hall C2 1 D1 : A reverse protection diode for IC. ...
Page 10 FAN8412M/FAN8413M Typical Application Circuits2 (48V) Q3 VCC OUTB D3 R7 VS Q1 Commutation OUTA & Control VCC 7FAN8412M/ Q2 VSignal R4 FAN8413M R5 Hall C2 1 D1 : A reverse protection diode for IC. ...
Page 11 FAN8412M/FAN8413M Package Dimensions (Unit: mm) 8-SOP-225
Page 12 FAN8412M/FAN8413M Package Dimensions (Unit: mm) 8-SOP Lead Free
Page 13 FAN8412M/FAN8413M Typical Performance characreristics Current Current [m A] [u A] Temperature [OC] Temperature [OC] Current Voltage [u A] [V] 1.6 4.0 VLDCL Temperature [OC] Temperature [OC] Voltage Vo...
Page 14 FAN8412M/FAN8413M Typical Performance characreristics(Continued) Voltage [V] 0.5 VALL / VTACOL Temperature [OC]
Page 15 FAN8412M/FAN8413M
Page 16 FAN8412M/FAN8413M DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASS...

Manual Details

Brand Fairchild
Pages 16
File Size 315.25 KB
Published May 20, 2026
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Frequently Asked Questions

What is the operating voltage range for this predriver?

It supports a wide range of operation voltages from 4V to 28V.

How does the unit detect motor lock, and can it recover automatically?

When locked, the LD/TACO pins are monitored for internal charging signals, triggering both an alarm output (AL) and automatic restart functions.

What specific parameters govern the auto-restart time (T)?

The auto-restart time is proportional to the external capacitance (C) connected to the LD pin.

Is this device suitable for all DC fan motor applications?

It is specifically suited as a predriver for DC cooling fan motors and locks motor protection using an open collector circuit.