SLLSFT3 November   2025 MC121-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 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 I2C Timing Requirements
    7. 5.7 Timing Diagrams
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Motor Control
        1. 6.3.1.1 Duty Input
        2. 6.3.1.2 Duty Curve
        3. 6.3.1.3 Motor Start, Speed Change, and Stop
        4. 6.3.1.4 Open-Loop (Duty Cycle) Control
        5. 6.3.1.5 Closed-Loop (Speed) Control
        6. 6.3.1.6 Commutation
          1. 6.3.1.6.1 Hall Sensor
            1. 6.3.1.6.1.1 Field Direction Definition
            2. 6.3.1.6.1.2 Internal Hall Latch Sensor Output
          2. 6.3.1.6.2 Hall Offset
          3. 6.3.1.6.3 Square Commutation
          4. 6.3.1.6.4 Soft Commutation
        7. 6.3.1.7 PWM Modulation Modes
      2. 6.3.2 Protections
        1. 6.3.2.1 Locked Rotor Protection
        2. 6.3.2.2 Current Limit
        3. 6.3.2.3 Overcurrent Protection (OCP)
        4. 6.3.2.4 VM Undervoltage Lockout (UVLO)
        5. 6.3.2.5 VM Over Voltage Protection (OVP)
        6. 6.3.2.6 Thermal Shutdown (TSD)
        7. 6.3.2.7 Integrated Supply (VM) Clamp
    4. 6.4 Device Functional Modes
      1. 6.4.1 Active Mode
      2. 6.4.2 Sleep and Standby Mode
      3. 6.4.3 Fault Mode
      4. 6.4.4 Test Mode and One-Time Programmable Memory
    5. 6.5 Programming
      1. 6.5.1 I2C Communication
        1. 6.5.1.1 I2C Read
        2. 6.5.1.2 I2C Write
  8. 7 Register Map
    1. 7.1 USR_OTP Registers
    2. 7.2 USR_TM Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 External Components
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Bulk Capacitance
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History

封装选项

机械数据 (封装 | 引脚)
  • DYM|6
  • DEZ|6
散热焊盘机械数据 (封装 | 引脚)
订购信息

4 Pin Configuration and Functions

MC121-Q1 MC121-Q1, 6-Pin SOT-23, Top ViewFigure 4-1 MC121-Q1, 6-Pin SOT-23, Top View
MC121-Q1 MC121-Q1, 6-Pin X2SON, Top ViewFigure 4-2 MC121-Q1, 6-Pin X2SON, Top View
Table 4-1 Pin Functions
PIN PACKAGE TYPE(1) DESCRIPTION
NAME SOT-23 X2SON
FG/RD 1 6 O Motor speed or rotor lock indicator output. Open-drain output that requires an external pull-up resistor to desired logic-high voltage. In test/programming mode, this pin becomes the SDA pin for I2C interface.
GND 2 5 G Device ground. Connect to system ground.
OUT1 4 3 O Half-bridge output. Connect to motor winding.
OUT2 3 4 O Half-bridge output. Connect to motor winding.
VM 5 2 P Device and motor power supply. Connect to motor supply voltage; bypass to GND with one 0.1-µF capacitor and one bulk capacitor. TI recommends a capacitor voltage rating at least twice the normal operating voltage of the device.
PWM/DC 6 1 I Motor speed control pin - can take a PWM or DC signal. This pin is internally pulled up to 100% duty cycle input when left floating in PWM input mode (PWMDC_MODE = 0x0). In test/programming mode, this pin becomes the SCL pin for I2C interface.
Thermal pad G Must be connected to ground.
(1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power, NC = no connect.