SLVSHE3 June   2024 DRV2911-Q1

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings Auto
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Output Stage
      2. 6.3.2 Hardware Interface
      3. 6.3.3 AVDD Linear Voltage Regulator
      4. 6.3.4 Step-Down Mixed-Mode Buck Regulator
        1. 6.3.4.1 Buck in Inductor Mode
        2. 6.3.4.2 Buck in Resistor mode
        3. 6.3.4.3 Buck Regulator with External LDO
        4. 6.3.4.4 AVDD Power Sequencing with Buck Regulator
        5. 6.3.4.5 Mixed mode Buck Operation and Control
        6. 6.3.4.6 Buck Undervoltage Lockout
        7. 6.3.4.7 Buck Overcurrent Protection
      5. 6.3.5 Charge Pump
      6. 6.3.6 Slew Rate Control
      7. 6.3.7 Cross Conduction (Dead Time)
      8. 6.3.8 Propagation Delay
      9. 6.3.9 Protections
        1. 6.3.9.1 PVDD Supply Undervoltage Lockout
        2. 6.3.9.2 AVDD Undervoltage Lockout
        3. 6.3.9.3 VCP Charge Pump Undervoltage Lockout
        4. 6.3.9.4 Overcurrent Latched Protection
        5. 6.3.9.5 Thermal Shutdown (OTSD)
          1. 6.3.9.5.1 OTSD FET
          2. 6.3.9.5.2 OTSD (Non-FET)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Functional Modes
        1. 6.4.1.1 Reset Mode
        2. 6.4.1.2 Operating Mode
        3. 6.4.1.3 Fault Reset (RESETZ Pulse)
      2. 6.4.2 OUTOFF functionality
  8. Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Design Procedure
      2. 7.2.2 Voltage and Current Sense Circuitry
  9. Power Supply Recommendations
    1. 8.1 Bulk Capacitance
  10. Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
    3. 9.3 Thermal Considerations
      1. 9.3.1 Power Dissipation
  11. 10Device and Documentation Support
    1. 10.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Tape and Reel Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Description

DRV2911-Q1 integrates two H-bridges for driving piezo-based Lens Cover Systems, LCS, up to 40V absolute maximum capability while maintaining a very low RDS(ON) to reduce switching losses. DRV2911-Q1 integrates a power management LDO (3.3V / 30mA) and buck converter (5.0V to 5.7V, ≤200mA) that can be used to power external circuits like the Ultrasonic Lens Cleaning (ULC) controller, ULC1001.

Each output driver channel consists of N-channel power MOSFETs configured in a half-bridge configuration. Two independent PWM inputs drive each half-bridge. The DRV2911-Q1 includes a 30mA, 3.3V LDO regulator.

Several protection features including supply undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), over-temperature warning (OTW), and over-temperature shutdown (OTSD) are integrated into DRV2911-Q1 to protect the device and system against fault events. Fault conditions are indicated by the FAULTZ pin. The fault pin can also be tied to the controller device, like ULC1001-Q1, where a fault can be recognized over I2C.

Device Information
PART NUMBER PACKAGE(1) PACKAGE SIZE(2)
DRV2911-Q1 VQFN (40) 7.00mm x 5.00mm
For all available packages, see the orderable addendum at the end of the data sheet.
The package size (length × width) is a nominal value and includes pins, where applicable.
DRV2911-Q1 Simplified Application Simplified Application