ZXBM5409Q BRUSHED DC MOTOR DRIVER WITH SERVO CONTROL Description Pin Assignments The ZXBM5409Q is a protected H-bridge driver designed specifically for manual automotive headlight-beam control and industrial servo (Top View) control applications with DC-brush motor loads. The integrated full- bridge driver output stage is composed of high-current, low-R H- DSON bridge MOSFETs to maximize efficiency. 1 FB 8 REF To simplify the circuit design and minimize external components, the 2 7 HYST RANGE device integrates voltage and temperature-compensated internal references, amplifiers, and output H-bridge power switches with low 3 6 GND OUT1 R . DSON 4 5 OUT2 For system flexibility, the servo control forward and reverse VDD hysteresis, deadband, and angle amplification are easily programmable by external resistors. PDIP-8 (Type A1) To help protect the motor coil, the ZXBM5409Q provides fault condition protection, such as RANGE input short to GND, short-to- supply voltage, or broken wires, by stopping the motor and disconnecting the output stage. In case of supply undervoltage and overvoltage, the device shuts down the output drive to help prevent overvoltage stress on the coil. The overcurrent protection monitors the output current and shuts down the outputs stage with periodic retry to help protect the coil from device burnout. Overtemperature shutdown provides thermal protection for the device. The ZXBM5409Q is available in industry standard PDIP-8 (Type A1) package and is qualified to AEC-Q100 Grade 1 and is automotive compliant supporting PPAPs. Features Applications Servo DC Motor Drive Automotive Headlight Position Servo Motor Wide Operating Voltage Range: 8V to 18V 8V/12V/18V Servo DC Motors Built-In H-Bridge with Low R Resistance DSON Output Drive Current Capability of 0.8A (Peak Current of 1.6A) Fault ProtectionRANGE Short to GND, Supply or Broken Wires Overvoltage and Undervoltage Shutdown Overcurrent Protection Thermal Protection Green Moulding in PDIP-8 (Type A1) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Qualified to AEC-Q100 Standards for High Reliability PPAP Capable (Note 4) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See ZXBM5409Q Typical Applications Circuit (Notes 5, 6, 7, 8) D1 UVLO SYSTEM Power VDD and POWER OVP C1 C2 Dz R R1 HH R Motor Coil Variable R Range RANGE OUT1 Resistor Amp Full Bridge C3 CONTROL LOGIC V R REFIN REF Drive REF OUT2 Servo Amp R FB FB Over TSD current Hyst protection HYST GND Amp R R2 HL SYSTEM GND Notes: 5. The C1 capacitor is for power stabilization and to strengthen the noise immunity, and the recommended value is 100nF. The capacitor is placed next to the VDD pin. The value of the capacitor can be optimized depending on the motor current. The value of C1 must be checked in the motor design in its operating conditions if reduced from the recommended value 6. The C2 capacitor is for power supply filtering, and the recommended value is 47F to 100F. C3 is output motor noise decoupling capacitor, and the recommended value is 100nF (range of 10nF to 100nF). If strengthening OCP short function (O1 and O2 short directly), the recommended value of C2 is 10F (range of 10F to 20F) for SMD type. 7. The resistor values R1 and R2 define the V . The resistors R and R define the hysteresis window REFIN HYH HYL 8. Diode D1 is for the reverse connection protection. The zener diode Dz is used to clamp the regenerative voltage spike from the motor operation to a safe level when reverse blocking diode D1 is used. If a reverse blocking diode is not used, the use of zener clamp Dz depends on the supply voltage capability to effectively sink the regenerative energy and voltage spike. Pin Descriptions Package Type: PDIP-8 (Type A1) Pin Number Pin Name Description 1 FB Position Feedback Input: Voltage Input 2 HYST Hysteresis I/O 3 OUT1 Output1 Drive Sourcing & Sinking Pin 4 VDD Power Supply Input Pin 5 OUT2 Output2 Drive Sourcing & Sinking Pin 6 GND Ground Pin 7 RANGE Range Input 8 REF Reference Input 2 of 14 April 2019 ZXBM5409Q Diodes Incorporated www.diodes.com Document number: DS41271 Rev. 3 - 2