TC78B025FTG TOSHIBA CMOS Integrated Circuit Silicon Monolithic TC78B025FTG 1-hall sine-wave PWM driver for 3-phase brushless DC motors 1. Outline The TC78B025FTG is a 1-hall sine-wave PWM driver for 3-phase brushless DC motors. DMOS is used in output stages, realizing low-on-resistance of 0.2 (total of high and low sides). A non-volatile memory (NVM) and a closed loop speed control function are incorporated. Cost can be suppressed without using microcomputers. P-VQFN24-0404-0.50-002 Weight: 0.04g (typ.) 2. Applications Fan motors 3. Features 1-hall sine-wave PWM drive Built-in closed loop speed control, configurable speed curve Low on resistance: RDS(H+L)=0.2 (typ.) Driving current: 3.5 A max (peak) Operating voltage range: 4.5 to 16 V Serial interface Standby mode Soft start Built-in protection circuits: Thermal shutdown (TSD), Under voltage lockout (UVLO), Over voltage protection (OVP), Under voltage protection for charge pump, Over current protection (ISD), Output current limit protection (OCP), and Lock detection protection. 2018 1 2018-02-14 Toshiba Electronic Devices & Storage Corporation TC78B025FTG 4. Block Diagram VM VCP 5V UVLO ISD VREG Charge CPP Pump OCP TSD GND CPM ALERT Control Logic U FG Gate V Driver W Nonvolatile SPD Memory (NVM) ADC SDO Serial SDI I/F SCK PGND DIR HP Position Detect HM Figure 4.1 Block Diagram Note: Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes. 5. Absolute Maximum Ratings Table 5.1 Absolute Maximum Ratings (Unless otherwise specified, T = 25C) a Characteristics Symbol Rating Unit V 18 M Power supply voltage V 6 (Note 1) V REG V V + 6 (Note 1) CP M HP, HM, DIR, FG -0.3 to 6 Input voltage V V IN SPD -0.3 to 18 U, V, W, Output voltage V 18 V OUT FG, ALERT FG, ALERT I 10 OUT1 Output current mA VREG I 10 OUT2 Power dissipation P 1.7 (Note 2) W D Operating temperature T -40 to 105 C opr Storage temperature T -55 to 150 C stg Junction temperature T 150 C j(MAX) Note: The absolute maximum ratings of a semiconductor device are a set of ratings that must not be exceeded, even for a moment. Do not exceed any of these ratings. Exceeding the ratings may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. Please use the IC within the specified operating ranges. Note: Output current may be limited by the ambient temperature or the device implementation. The maximum junction temperature (T ) should not exceed 150C. j(MAX) Note 1: V and V pin voltage are generated in the IC. Do not apply voltage externally. REG CP Note 2: When mounted on a board, (JEDEC 2-layer board, R =73.5C/W) ja 2 2018-02-14