STSPIN840/BKN STMicroelectronics

STSPIN840 Compact dual brushed DC motor driver Datasheet - production data Description The STSPIN840 is a compact brushed DC motor driver able to drive two bi-directional brushed DC motors simultaneously. It integrates, in a very small 4 x 4 mm QFN package, both the control logic and a fully protected low R dual full- DSon bridge power stage. QFN 4 x 4 - 24 lead Thanks to a dedicated PARALLEL input pin the parallel mode function can be enabled, transforming the device in an equivalent and Features more powerful single full-bridge able to deliver up to 3A current at an equivalent HS + LS R rms DSon Operating voltage from 7 to 45 V of 500 m . Maximum output current 1.5 A rms The STSPIN840 embeds two independent PWM R HS + LS = 1 typ. DSon current controllers (one for each full bridge) based Current control with adjustable OFF time on user settable values of reference voltage and OFF time. Current sensing based on external shunt resistors The devices can be forced in a low consumption state reducing the total current consumption down Full protections set to less than 45 A. Non-dissipative overcurrent protection Short-circuit protection As with all other devices from the STSPIN family, the STSPIN840 integrates a complete set of Undervoltage lockout protections for the power stages (non-dissipative Thermal shutdown overcurrent, thermal shutdown, short-circuit and Parallel operation mode achieving single full- undervoltage lockout) making it a bulletproof bridge configuration with output I = 3 A RMS rms solution for the new wave of demanding industrial and R HS + LS = 500 m typ. DSon applications. Low standby current consumption Applications Industrial automation and service robots Medical and health care ATM and money handling machines Stage lighting Thermal printers Textile and sewing machines Vending machines Office and home automation May 2018 DocID031835 Rev 1 1/28 This is information on a product in full production. www.st.comContents STSPIN840 Contents 1 Block diagram 5 2 Electrical data 6 2.1 Absolute maximum ratings . 6 2.2 Recommended operating conditions . 6 2.3 Thermal data . 7 2.4 ESD protection ratings 7 3 Electrical characteristics . 8 4 Pin connection . 10 5 Detailed description 12 5.1 Power supply and standby 12 5.2 Logic inputs . 13 PARALLEL mode 14 5.3 PWM current control . 15 TOFF adjustment 17 5.4 Device protections 18 5.4.1 Overcurrent and short-circuit protections 18 5.4.2 Thermal shutdown . 20 5.4.3 Blanking time . 21 5.5 ESD protection strategy 22 6 Typical applications 23 7 Layout recommendations 24 8 Package information 25 8.1 TFQFPN TFQFPN 4 x 4 x 1.05 - 24 L package information 25 9 Ordering information . 27 10 Revision history . 27 2/28 DocID031835 Rev 1