34920

www.DataSheet4U.com Freescale Semiconductor Advance Information Document Number: MC34920 Rev. 2.0, 1/2007 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 kHz) 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 VVB+ VV1 + 34920 H-BRIDGE MOTOR DRIVERS FN SUFFIX EI SUFFIX (PB-FREE) 98ASB42598B 44-PIN PLCC ORDERING INFORMATION Device MC34920FN/R2 MC34920EI/R2 Temperature Range (TA) -40°C to 125°C Package 44 PLCC VV2 + 34920 V1_FB VB+ V1_SWITCH V2_SWITCH V2_FB DR1A DC MOTOR MCU RESET SDI SCLK CS DR2A D...