TC78B002FNG

TOSHIBA CMOS Integrated Circuit Silicon Monolithic TC78B002FNG Single Phase Full-wave Driver for Fan Motor TC78B002FNG TC78B002FNG is a single phase full-wave driver for fan motor. It has a DMOS device in an output transistor. A highly effective drive is possible by adopting a DMOS output driver with low ON resistance and a PWM drive system. Features Single-phase full-wave drive Motor power supply voltage: VM =16V (maximum operating range) Output current: Iout = 1.5A (max.) PWM control Built-in oscillation circuit (External resistor) Soft switching drive Lock protection, Automatic recovery Quick start Built in hall bias Rotation Speed Detection (FG) and Lock Detection (RDO) Output Current limit function Built in over current protection Built in thermal shut down circuit TC78B002FNG SSOP16-P-225-0.65B Weight: 0.07g (typ) 1 2013-10-17 Block Diagram (Application circuit) 00..11uμFF VREG HP Hall Ele. HM 5V Regulator ISD VSOFT VOFF LA 7bit A/D VMI VSP OSCR OSC Control Logic Pre Driver TSD 24kΩ Lock Protection GND TC78B002FNG VM OUT1 M OUT2 FG RDO RS 2 2013-10-17 Pin Assignment VREG 1 HP 2 HM 3 OSCR 4 RDO 5 OUT1 6 GND 7 RS 8 16 VSOFT 15 VMI 14 LA 13 VOFF 12 VSP 11 FG 10 OUT2 9 VM TC78B002FNG 3 2013-10-17 Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin name VREG HP HM OSCR RDO OUT1 GND RS VM OUT2 FG VSP VOFF LA VMI VSOFT TC78B002FNG Description Output pin for reference voltage of 5 V Hall signal input pin + Hall sig...