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

5.5 Electrical Characteristics


MC121-Q1: 3.2V ≤ VVM ≤ 35V, –40°C ≤ TJ ≤ 150°C (unless otherwise noted)

Typical values are at TJ = 25°C and VVM = 12V.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLIES (VM)
IVMQ VM sleep mode current VPWM/DC = 0V, SLEEP_EN = 0x1 0.08 0.14 mA
IVM VM active mode current VPWM/DC = 3V (PWMDC_MODE = 0x1) or floating (PWM_DC = 0x0), no load across OUTx 3.9 5 mA
tWAKE Turn-on time from standby/sleep mode Time taken from PWM duty = 0% to 100% to OUTx switching, PWM input (PWMDC_MODE = 0x0), PWM_IN_RANGE = 0x0 16 ms
Time taken from PWM duty = 0% to 100% to OUTx switching, PWM input (PWMDC_MODE = 0x0), PWM_IN_RANGE = 0x1 64 ms
Turn-on time from standby/sleep mode Time taken from DC input = 0V to 3V to OUTx switching, DC input (PWMDC_MODE = 0x1) 1 ms
tSTOP_DET Time taken to detect DIN = 0%  Time take from PWM duty = 100% to 0% to initiate motor stop as per RAMP_ON_STOP_DIS, PWM input (PWMDC_MODE = 0x0, PWM_IN_RANGE = 0x0) 16 ms
Time take from PWM duty = 100% to 0% to initiate motor stop as per RAMP_ON_STOP_DIS, PWM input (PWMDC_MODE = 0x0, PWM_IN_RANGE = 0x1) 64 ms
Time taken to detect DIN = 0% Time take from DC input = 3V to 0V to initiate motor stop as per RAMP_ON_STOP_DIS, DC input (PWMDC_MODE =0x1) 1.3 ms
PWM/DC (SCL) and FG (SDA)
VIL Input logic low voltage PWM/DC pin in PWM input mode (PWMDC_MODE =0x0) during active or standby state or SCL mode, FG pin in SDA mode 0.8 V
VIH Input logic high voltage 2 V
VHYS Input hysteresis 0.15 0.2 0.26 V
VSLEEP_DC Voltage threshold on PWM/DC pin for sleep entry in DC input mode Voltage applied on PWM/DC pin, SLEEP_EN = 0x1, PWMDC_MODE = 0x1 0 0.1 V
IIL (PWM/DC) Input logic low current VI = 0V, SLEEP_EN = 0x0, PWM/DC pin in PWM input mode (PWMDC_MODE = 0x0) or SCL mode 225 245 265 µA
VI = 0V, SLEEP_EN = 0x0, PWM/DC pin in DC input mode (PWMDC_MODE = 0x1)  1 µA
VI = 0V, SLEEP_EN = 0x1, PWM/DC pin in PWM input mode (PWMDC_MODE = 0x0) or DC input mode (PWMDC_MODE = 0x1) or SCL mode 20 50 70 µA
IIH (PWM/DC) Input logic high current VI = 3.3V, PWM/DC pin in PWM input mode (PWMDC_MODE = 0x0) or DC input mode (PWMDC_MODE = 0x1) or SCL mode -1 0 µA
VI = VVM, PWM/DC pin in PWM input mode (PWMDC_MODE = 0x0) or DC input mode (PWMDC_MODE = 0x1) or SCL mode -1 0 µA
VPU (PWM/DC) Internal pull-up voltage PWM input mode (PWMDC_MODE = 0x0), VM ≥ 3.6V 2.7 2.9 3.2 V
PWM input mode (PWMDC_MODE = 0x0), VM < 3.6V 2.55 VM V
fPWM_IN Input PWM frequency range for duty/speed reference PWM input (PWMDC_MODE = 0x0), PWM_IN_RANGE = 0x0 0.08 90 kHz
PWM input (PWMDC_MODE = 0x0), PWM_IN_RANGE = 0x1 0.02 22 kHz
VPWM_ACC Duty/speed reference accuracy from PWM input 20Hz ≤ fPWM_IN ≤ 45kHz 0.4 %
45kHz < fPWM_IN ≤ 90kHz 0.8 %
VDC DC input range for duty/speed reference DC input (PWMDC_MODE = 0x1), 3.2V ≤ VM < 4.5V 0 VM - 1.4 V
DC input (PWMDC_MODE = 0x1), 4.5V ≤ VM ≤ 35V 0 3.1 V
VDC_DIN_0% DC input threshold for 0% duty/speed reference (DIN = 0%) DC input (PWMDC_MODE = 0x1) 0.1 V
VDC_DIN_100% DC input threshold for 100% duty/speed reference (DIN = 100%) DC input (PWMDC_MODE = 0x1), 3.2V ≤ VM < 4.5V VM - 1.4 3.2 V
DC input (PWMDC_MODE = 0x1), 4.5V ≤ VM ≤ 35V 2.9 3 3.2 V
VDC_ACC Duty/speed reference accuracy from DC input DC input (PWMDC_MODE = 0x1), 4.5V ≤ VM ≤ 35V 3 %
VOL (FG) Output logic low voltage IOD = 20mA 0.4 V
IOZ (FG) Output logic high current VOD = 3.3V -1 1 µA
IOZ (FG) Output logic high current VOD = VM -1 1 µA
DRIVER OUTPUTS (OUTx)
RDS(on) (H+L) High-side+Low-side MOSFET on resistance VVM = 3.2V, IO = 500mA, TA = 25°C 0.85 1.02 Ω
RDS(on) (H+L) High-side+Low-side MOSFET on resistance VVM = 12V, IO = 500mA, TA = 25°C 0.8 0.95 Ω
RDS(on) (H+L) High-side+Low-side MOSFET on resistance VVM = 12V, IO = 500mA, TA = 150°C 1.3 1.5 Ω
fPWM_OUT PWM output frequency PWM_OUT_FREQ = 0x0, DITHER_EN = 0x0 23.5 25 26.25 kHz
fPWM_OUT PWM output frequency PWM_OUT_FREQ = 0x1, DITHER_EN = 0x0 45 50 55 kHz
DIGITAL-LATCH HALL EFFECT SENSOR
BOP Operate point 0.4 0.8 1.6 mT
BRP Release point -1.6 -0.7 -0.4 mT
BHYS Hysteresis; BHYS = (BOP – BRP) 1.2 1.6 3.2 mT
BOF Magnetic offset; BOF = (BOP + BRP) / 2 -1 0 1 mT
OSCILLATOR
fosc Internal oscillator frequency VVM = 12V, TJ = 25oC 24.625 25 25.375 MHz
fosc Internal oscillator frequency 24.25 25 25.75 MHz
DUTY CURVE
DOUT_RES Output duty cycle resolution per LSB Measured at 50% voltage level, 0.4% ≤ DOUT ≤ 99.6% 0.4 %
DHYS Speed curve hysteresis for rising DIN DIN_HYS = 0x0. Sweep DIN from 0% to DIN0+DIN_HYS. Output DOUT changes from DOUT0 to target duty cycle. 0 %
DIN_HYS = 0x1. Sweep DIN from 0% to DIN0+DIN_HYS. Output DOUT changes from DOUT0 to target duty cycle. 1.2 %
DIN_HYS = 0x2. Sweep DIN from 0% to DIN0+DIN_HYS. Output DOUT changes from DOUT0 to target duty cycle. 2.4 %
DIN_HYS = 0x3. Sweep DIN from 0% to DIN0+DIN_HYS. Output DOUT changes from DOUT0 to target duty cycle. 4.8 %
SPEEDERR Closed loop speed accuracy TJ = 25oC, SPEED_LOOP_EN = 0x1, 12.5% x MAX_SPEED ≤ SPEED_REF ≤ MAX_SPEED -1 1 %
SPEED_LOOP_EN = 0x1, 12.5% x MAX_SPEED ≤ SPEED_REF ≤ MAX_SPEED -3 3 %
COMMUTATION
θHALL_OS_ANGLE Minimum Hall offset angle HALL_OS_ANGLE = 0x00 0 deg
Maximum Hall offset angle HALL_OS_ANGLE = 0x1F 43.8 deg
θHALL_OS_ANGLE_LSB Hall offset angle resolution per LSB HALL_OS_ANGLE LSB 1.4 deg
tHALL_OS Minimum Hall offset signal lead/lag time HALL_OS_TIME = 0x00 0 µs
Maximum Hall offset signal lead/lag time HALL_OS_TIME = 0xFF 2.55 ms
tHALL_OS_LSB Hall offset signal lead/lag time resolution per LSB HALL_OS_TIME LSB 10 µs
tDEMAG Minimum time for demagnetization period DEMAG_TIME = 0x00 0 µs
Maximum time for demagnetization period DEMAG_TIME = 0x20 1.29 ms
tDEMAG_LSB DEMAG_TIME time resolution per LSB DEMAG_TIME LSB 10.24 µs
θSRISE Minimum angle for soft rise SRISE = 0x00 2.8 deg
Maximum angle for soft rise SRISE = 0x10 90 deg
θSRISE_LSB SRISE angle resolution per LSB SRISE LSB 2.8 deg
θSFALL Minimum angle for soft fall SFALL = 0x00 2.8 deg
Maximum angle for soft fall SFALL = 0x1F 90 deg
θSFALL_LSB SFALL angle resolution per LSB SRISE LSB 2.8 deg
PRESTART AND PWM RAMP/SOFT START
PWM_RAMP_RATE Output duty cycle ramp rate for soft start and speed changes PWM_RAMP_SEL = 0x0 (1.3s for 0 to 100%) 77 %/s
PWM_RAMP_SEL = 0x1 (2.6s for 0 to 100%) 38.5 %/s
PWM_RAMP_SEL = 0x2 (5.2s for 0 to 100%) 19.2 %/s
PWM_RAMP_SEL = 0x3 (10.4s for 0 to 100%) 9.6 %/s
PROTECTION CIRCUITS
VMCLAMP VM clamping voltage Iclamp = 20mA  37 43 V
VMPOR VM power on reset threshold to power-up the device Supply rising 2.3 2.55 2.7 V
VMPOR_HYS VM power on reset threshold hysteresis Rising to falling threshold 0.04 0.09 0.13 V
VUVLO Supply undervoltage lockout threshold to start/stop driving the motor Supply rising (UVLO_SEL = 0x0) 2.85 3 3.15 V
Supply falling (UVLO_SEL = 0x0) 2.55 2.7 2.85 V
VUVLO_HYS Supply UVLO hysteresis Rising to falling threshold (UVLO_SEL = 0x0) 0.3 V
VUVLO Supply undervoltage lockout threshold to start/stop driving the motor Supply rising (UVLO_SEL = 0x1) 3.97 4.2 4.5 V
Supply falling (UVLO_SEL = 0x1) 2.55 2.7 2.85 V
VUVLO_HYS Supply UVLO hysteresis Rising to falling threshold (UVLO_SEL = 0x1) 1.5 V
VUVLO Supply undervoltage lockout threshold to start/stop driving the motor Supply rising (UVLO_SEL = 0x2) 5.42 5.7 6 V
Supply falling (UVLO_SEL = 0x2) 2.55 2.7 2.85 V
VUVLO_HYS Supply UVLO hysteresis Rising to falling threshold (UVLO_SEL = 0x2) 3 V
VUVLO Supply undervoltage lockout threshold to start/stop driving the motor Supply rising (UVLO_SEL = 0x3) 7.2 7.6 8 V
Supply falling (UVLO_SEL = 0x3) 2.55 2.7 2.85 V
VUVLO_HYS Supply UVLO hysteresis Rising to falling threshold (UVLO_SEL = 0x3) 4.9 V
VOVP Supply overvoltage lockout (OVP)  Supply rising (OVP_SEL = 0x0) 32.7 34.5 36.3 V
VOVP Supply overvoltage lockout (OVP)  Supply falling (OVP_SEL = 0x0) 31.4 33.2 34.9 V
VOVP Supply overvoltage lockout (OVP)  Supply rising (OVP_SEL = 0x1) 21.5 22.7 23.9 V
VOVP Supply overvoltage lockout (OVP)  Supply falling (OVP_SEL = 0x1) 20.1 21.2 22.3 V
VOVP Supply overvoltage lockout (OVP)  Supply rising  (OVP_SEL = 0x2) 17.5 18.4 19.3 V
VOVP Supply overvoltage lockout (OVP)  Supply falling (OVP_SEL = 0x2) 15.9 16.9 17.9 V
VOVP_HYS Supply overvoltage hysteresis 1.5 V
tOVP_DEG Supply overvoltage deglitch time 70 80 90 µs
tOVP_BLANK Supply overvoltage blanking time OVP_BLANK_EN = 0x1, OVP_BLANK_TIME = 0x0 1 ms
OVP_BLANK_EN = 0x1, OVP_BLANK_TIME = 0x1 4 ms
ILIMIT Current limit threshold ILIMIT_SEL = 0x0 0.29 0.32 0.37 A
ILIMIT_SEL = 0x1 0.38 0.43 0.49 A
ILIMIT_SEL = 0x2 0.48 0.53 0.61 A
ILIMIT_SEL = 0x3 0.58 0.63 0.73 A
ILIMIT_SEL = 0x4 0.67 0.73 0.85 A
ILIMIT_SEL = 0x5 0.76 0.83 0.97 A
ILIMIT_SEL = 0x6 0.85 0.94 1.09 A
ILIMIT_SEL = 0x7 0.94 1.03 1.21 A
ILIMIT_SEL = 0x8 1.03 1.12 1.33 A
ILIMIT_SEL = 0x9 1.11 1.21 1.44 A
tILIMIT_BLANK Current limit blanking time (applied from most recent rising edge PWM (FET) signal) ILIM_BLANK_SEL = 0x0 0.5 µs
ILIM_BLANK_SEL = 0x1 1 µs
tILIMIT_DEG Current limit deglitch time ILIM_DEGLITCH_SEL = 0x0 0.6 µs
Current limit deglitch time ILIM_DEGLITCH_SEL = 0x1 1.1 µs
IOCP Overcurrent protection trip point (HS_FET) 1.3 * ILIMIT 1.7 * ILIMIT 2.2 * ILIMIT A
IOCP Overcurrent protection trip point (LS_FET) 1.5 * ILIMIT 1.7 * ILIMIT 1.85 * ILIMIT A
tOCP_DEG Overcurrent protection deglitch time 0.6 µs
tLRD_START Locked rotor detection time at start-up LRD_TIME_STARTUP = 0x0   0.31 0.32 0.34 s
LRD_TIME_STARTUP = 0x1  0.42 0.44 0.46 s
LRD_TIME_STARTUP = 0x2  0.5 0.52 0.55 s
LRD_TIME_STARTUP = 0x3  1 1.05 1.1 s
NRETRY Long retry time ratio for locked rotor and overcurrent. Long retry time = NRETRY x tLRD_START LRD_LONG_RETRY_SEL = 0x0 2
LRD_LONG_RETRY_SEL = 0x1 4
LRD_LONG_RETRY_SEL = 0x2 8
LRD_LONG_RETRY_SEL = 0x3 10
LRD_LONG_RETRY_SEL = 0x4 12
LRD_LONG_RETRY_SEL = 0x5 16
LRD_LONG_RETRY_SEL = 0x6 24
LRD_LONG_RETRY_SEL = 0x7 28
tLRD_RUN Locked rotor detection time at start-up Locked rotor during motor run  0.29 0.32 0.35 s
TTSD Thermal shutdown temperature 155 170 185 °C
THYS Thermal shutdown hysteresis 24 °C