TA8429H/HQ TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8429H, TA8429HQ Full-bridge Driver (H-Switch) for DC Motor (Driver for Switching between Forward and Reverse Rotation) The TA8429H/HQ is a full-bridge driver IC for brush motor rotation control. Four operating modes are selectable from forward, reverse, stop and brake. The TA8429H/HQ is best suited to drive medium-sized DC and bipolar stepping motors. Since the motor drive section and control section have separate power supply pins, the TA8429H/HQ also allows servo control. Weight : 4.04 g (typ.) Features z Output current of up to 3.0 A (AVE.) and 4.5 A (PEAK) z Four different modes (forward rotation, reverse rotation, stop, and brake) are supported. A counter-electromotive force absorber diode is also incorporated. z Stand-by mode available: I 100 A ST z Built-in thermal shutdown and short circuit protection circuits z HZIP power package sealed z Wide range of operating voltage: V = 7 to 27 V CC V = 0 to 27 V S *Please consider the internal loss (V ) to operate the IC though minimum V sat S is defined zero. Terminals of TA8429 written below are sensitive to electrostatic discharge. When handling this product, ensure that the environment is protected against electrostatic discharge by using an earth strap, a conductive mat and an ionizer. Ensure also that the ambient temperature and relative humidity are maintained at reasonable levels. Terminals which are sensitive to electrostatic discharge: No. 1, 2, and 12. The IC should be installed correctly. Otherwise, the IC or peripheral parts and devices may be degraded or permanently damaged. The TA8429HQ is a Sn-plated product. (The Pb-containing materials with a high melting point that are exempted from RoHS directives are used inside the IC.) The following conditions apply to solderability: *Solderability 1. Use of Sn-37Pb solder bath *solder bath temperature = 230C *dipping time = 5 seconds *number of times = once *use of R-type flux 2. Use of Sn-3.0Ag-0.5Cu solder bath *solder bath temperature = 245C *dipping time = 5 seconds *the number of times = once *use of R-type flux 1 2010-02-23 TA8429H/HQ Block Diagram Pin Function Pin No. Symbol Functional Description 1 IN1 These pins receive inputs for controlling the state of the outputs. The input sections incorporate a PNP-type voltage comparator. 2 IN2 3 N.C Non-connection This pin connects to a DC motor. It has a current carrying capacity of 3 A in both sink and source modes. 4 OUT1 A diode for absorbing counter-electromotive force in the motor is incorporated on both V and CC ground sides. 5 N.C Non-connection 6 GND GND terminal 7 N.C Non-connection This pin, along with pin 4, connects to a motor. It has the same function as pin 4. Its state is 8 OUT2 controlled with inputs to pins 1 and 2. 9 N.C Non-connection 10 V Supply voltage terminal for motor drive S 11 V This is a supply voltage pin for the control section. It is completely separated from V . CC S When this pin is open or connected to a ground, the current flowing through the motor is 12 ST minimized (100 A). 2 2010-02-23