用户手册 — Texas Instruments LM3549 Evaluation Board LM3549SQEV/NOPB

目录

• FEATURES

  1
• APPLICATIONS

  1
• KEY SPECIFICATIONS

  1
• Description

  1
• Absolute Maximum Ratings

  3
• Operating Ratings

  3
• Thermal Properties

  3
• Electrical Characteristics

  3
• Block Diagram

  5
  • Modes of Operation

    6
• Typical Performance Characteristics

  7
• Operation Description

  9
  • CONTROL INTERFACE

    9
  • CONTROL REGISTERS

    10
  • EEPROM PROGRAMMING

    10
  • CURRENT SETTING

    10
  • BRIGHTNESS CONTROL

    11
  • PWM TIMING

    11
  • FAULT DETECTION

    12
  • LED OPEN FAULT

    12
  • LED SHORT FAULT

    13
  • TSD FAULT

    13
  • UVLO FAULT

    13
  • OVER CURRENT PROTECTION FAULT

    13
  • I2C Compatible Interface

    13
    • I2C ADDRESS

      13
  • Register Map

    15
  • I2C Register Details

    16
    • 00h BANK_SEL[1:0]

      16
    • 01h IR0_LSB and 02h IR0_MSB

      16
    • 03h IG0_LSB and 04h IG0_MSB

      16
    • 05h IB0_LSB and 06h IB0_MSB

      16
    • 07h IR1_LSB and 08h IR1_MSB

      16
    • 09h IG1_LSB and 0Ah IG1_MSB

      16
    • 0Bh IB1_LSB and 0Ch IB1_MSB

      17
    • 0Dh IR2_LSB and 0Eh IR2_MSB

      17
    • 0Fh IG2_LSB and 10h IG2_MSB

      17
    • 11h IB2_LSB and 12h IB2_MSB

      17
    • 13h FADER

      17
    • 14h CTRL

      17
    • BIT[1:0] PWM and MFE

      17
    • BIT[3:2] TIME OUT[1:0]

      17
    • BIT[5:4] SOFT START[1:0]

      17
    • 15h ILIMIT

      18
    • BIT[1:0] NEG_LIMIT[1:0]

      18
    • BIT[5:4] POS_LIMIT[1:0]

      18
    • 16h F_MASK

      18
    • 17h FAULT

      18
    • BIT[0] OCP

      18
    • BIT[1] TSD

      18
    • BIT[2] UVLO

      18
    • BIT[4:3] OPEN[1:0]

      18
    • BIT[6:5] SHORT[1:0]

      19
    • 19h and 1AH USR1 and USR2

      19
    • 40h EEPROM CONTROL

      19
• Revision History

  20