TA8050F Datasheet | Toshiba

Features - - - - - - - Bidirectional DC motor driver Current capacity Four modes : 1.5 A : Forward, Reverse, Stop, and Brake Weight: 0.79 g (typ.) Remended operating supply voltage range : VCC = 6~16 V Protective functions : Thermal Shutdown, Short Circuit Protection, and Overvoltage Shutdown Built-in diode for counteracting counter electromotive force HSOP-20 Pin power flat package Block Diagram and Pin Layout M (-) 20 19 18 17 16 GND FIN M (+) 15 14 13 12 11 Thermalshutdown and over-voltage protection Short protection Control logic 1 VCC 3 VCC FIN GND DI1 DI2 2002-02-27 Pin Description Pin No. 1 3 FIN 8 9 15 16 2, 4~7 10~14 17~20 Symbol VCC GND DI1 DI2 M (+) M (-) Description Power supply pin. This pin has a function to turn off the output when the applied voltage exceeds 27.5 V, thus protecting the IC and the load. Grounded Output status control pin. Connects to a PNP-type voltage parator. Connects to the DC motor. Both the sink and the source have a current capacity of 1.5 A. Diodes for absorbing counter electromotive force are contained on the VCC and GND sides. Connects to the DC motor together with pin 15 and has the same function as pin 3. This pin is controlled by the inputs from pins 8 and 9. Not connected. (Electrically, this pin is pletely open.) Truth Table DI1 H L H L Input/Output Input DI2 H H L L M (+) L L H Output M (-) L H L (Note 2) (Note 1) OFF (high impedance) Note 1: Brake mode es into effect when both M (+) and M (-) go low. Note 2: Stop mode es into effect when both M (+) and M (-) turn OFF. 2002-02-27 Description of Multi-Protective Operation The TA8050F has functions for protection from overvoltage (VSD), overcurent (ISD), and overheat (TSD). These functions protect the IC (and the motor load in some cases) from deterioration or destruction due to power-related overstress. The three functions work independently. Each function is explained below. VSD ISD TSD CONTROL LOGIC...