EUM6862.pdf• Built in 24V Full-wave Motor Driver for Fan Motor
• Built in Kickback Voltage Protection, No Zener
Diode Need
• External Programmable Soft Start and Soft
Restart Function
• Wide Input Range 3V~28V
• PWM Fan Speed Control
• Programmable Minimum Fan Speed
• Built in Soft Switching Function
• Built in Hall Bias
• Lock Protection and Auto Restart
• Fan Rotation Speed Feedback FG Output
(EUM6862/B)
• Fan Rotation Detection RD Output
(EUM6862/A)
• Thermal Shutdown Protection
• Available in TSSOP-16 and TDFN-14 Packages
• RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
• Single-phase full-wave drive
(16V, 1.0A transistors are built in)
• Built-in variable speed function controlled
by a thermistor input
The LB11961 can implement quiet, low-vibration variable
speed control using externally clocked high side transistor
direct PWM drive.
• Built-in regenerative diode (Di); only requires a minimal
number of external components.
• Built-in HB
• Minimum speed setting pin (allows full-speed mode
operation at startup)
• Operates in full-speed mode when the thermistor is
removed.
• Built-in lock protection and automatic recovery circuits
• FG (speed detection) and RD (lock detection) outputs
• Built-in thermal shutdown circuit
