MC34920 Datasheet | Motorola Semiconductor

.. Freescale Semiconductor, Inc. Document order number: MC34920 Rev 1.0, 01/2004 MOTOROLA SEMICONDUCTOR TECHNICAL DATA Advance Information 2.8 Ω (Typ) Quad H-Bridge Motor Driver The 34920 is a multifunctional analog ASIC. The 34920 integrates two circuits, four H-bridge drivers, a reset circuit in a single IC, and two DC/DC switching voltage regulators. Input voltage is 21 V to 42 V DC. Each motor of the two driver blocks can be configured as either a DC motor driver with pulse width modulation (PWM)-control or a single bipolar step motor driver. In step motor mode, both drivers are capable of being operated in the quarter step mode. In DC motor mode, both bridges in a driver are in parallel, providing 2.4 A of drive current. In step motor mode, each bridge in a driver drives one phase. Each phase is driven with a bipolar current mode drive. Features - Individual Thermal Limit Protection - User-Selectable Motors: 2 DC Motors (2.4 A/Motor), 2 Step Motors (W1-2 Phase Control), 1 DC Motor and 1 Step Motor - 2 Buck Regulators (Switching @ 200 k Hz) - VV2 Output Voltage Is Programmable to 10 V to 15 V DC (Externally Set) - Low-Voltage Detection Reset (VV1 and VVB+) - Pb-Free Packaging Designated by Suffix Code EI 2.8 Ω (TYP) QUAD H-BRIDGE MOTOR DRIVER Freescale Semiconductor, Inc... EI (Pb-FREE) SUFFIX FN SUFFIX CASE 777 44-TERMINAL PLCC ORDERING INFORMATION Device MC34920EI/FN/R2 Temperature Range (TA) 0°C to 70°C Package 44 PLCC 34920 Simplified Application Simplified Application Diagram Diagram VVB+ VV1 + VV2 + V1_FB V1_SWITCH V2_SWITCH V2_FB VB+ DR1A DC MOTOR RESET MCU SDI SCLK CS DR1PWM DR2PWM DR2A DR1B DC...