ZHCSQG8 October   2023 LP5811

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
  9. 8 Typical Characteristics
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Synchronous Boost Converter
        1. 9.3.1.1 Undervoltage Lockout
        2. 9.3.1.2 Enable and Soft Start
        3. 9.3.1.3 Switching Frequency
        4. 9.3.1.4 Current Limit Operation
        5. 9.3.1.5 Boost PWM Mode
        6. 9.3.1.6 Boost PFM Mode
      2. 9.3.2 Analog Dimming
      3. 9.3.3 PWM Dimming
      4. 9.3.4 Autonomous Animation Engine Control
        1. 9.3.4.1 Animation Engine Pattern
        2. 9.3.4.2 Sloper
        3. 9.3.4.3 Animation Engine Unit (AEU)
        4. 9.3.4.4 Animation Pause Unit (APU)
      5. 9.3.5 Protections and Diagnostics
        1. 9.3.5.1 Overvoltage Protection
        2. 9.3.5.2 Output Short-to-Ground Protection
        3. 9.3.5.3 LED Open Detections
        4. 9.3.5.4 LED Short Detections
        5. 9.3.5.5 Thermal Shutdown
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
    6. 9.6 Register Maps
  11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Application
      2. 10.2.2 Design Parameters
      3. 10.2.3 Detailed Design Procedure
        1. 10.2.3.1 Inductor Selection
        2. 10.2.3.2 Output Capacitor Selection
        3. 10.2.3.3 Input Capacitor Selection
        4. 10.2.3.4 Program Procedure
        5. 10.2.3.5 Programming Example
      4. 10.2.4 Application Performance Plots
    3. 10.3 Power Supply Recommendations
    4. 10.4 Layout
      1. 10.4.1 Layout Guidelines
      2. 10.4.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 静电放电警告
    6. 11.6 术语表

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

10.2.4 Application Performance Plots

The following figures show the application performance plots.

GUID-20230915-SS0I-ZCGT-QDFF-MQLLLFQFWVBR-low.svg

PWM frequency = 24 kHz

LED_A0/A1/A2 enable

led_mode = 4h

Figure 10-4 Scan Lines and Current Sinks Waveforms of OUT0, OUT1, OUT2, OUT3
GUID-20230915-SS0I-MCS3-JC7X-PLDDLSP64RWS-low.svg
Switch blank time tSW_BLK = 1 μs
Figure 10-6 Scan Lines Switching Waveforms of OUT0, OUT1, OUT2, OUT3
GUID-20230915-SS0I-RRPJ-FBFQ-HVXXG4NVSMTH-low.svg
phase_align_a0 = 0h, phase_align_a1 = 0h, phase_align_a2 = 0h, PWM = 127
Figure 10-8 PWM Alignment Disabled
GUID-20230915-SS0I-M2WF-MGV7-PRD2PVZMBZJP-low.svg
PWM frequency = 12 kHzLED_A0/A1/A2 enable

led_mode = 4h

Figure 10-5 Scan Lines and Current Sinks Waveforms of OUT0, OUT1, OUT2, OUT3
GUID-20230915-SS0I-XKVF-9X1T-SDP1JW2V47PH-low.svg
Switch blank time tSW_BLK = 2 μs
Figure 10-7 Scan Lines Switching Waveforms of OUT0, OUT1, OUT2, OUT3
GUID-20230915-SS0I-5FXM-NCKS-6GXFRSDNQWN8-low.svg
phase_align_a0 = 1h, phase_align_a1 = 2h, phase_align_a2 = 3h, PWM = 127
Figure 10-9 PWM Alignment Enabled
GUID-20230919-SS0I-F9P4-RDLJ-RB0NPR5KTQJX-low.svg
VIN = 3.6 V, VOUT = 5 V, IOUT = 1 A
Figure 10-10 Switching Waveform at Heavy Load
GUID-20230920-SS0I-F9PX-FVZT-J1V1VZVG9SBB-low.svg
VIN = 2.0 V, VOUT = 3.3 V, 6.6-Ω resistance load
Figure 10-12 Start-up Waveform
GUID-20230919-SS0I-ST60-CF7N-XH4KX0WCGH4M-low.svg
VIN = 3.6 V, VOUT = 5 V, IOUT = 400 mA to 800 mA with 20-μs slew rate
Figure 10-14 Load Transient
GUID-20230919-SS0I-PGN3-ZKKS-CG9HJTFKBJWH-low.svg
VIN = 3.6 V, VOUT = 5 V, IOUT = 0 A to 800 mA Sweep
Figure 10-16 Load Sweep
GUID-20230919-SS0I-VXBM-SVLX-BQSZ6JDTDHZ0-low.svg
VIN = 2.5 V, VOUT = 3 V, 6.6-Ω resistance load
Figure 10-18 Output Short Protection (Entry)
GUID-20230919-SS0I-VVFK-RRMK-RV7VH3L4R8DN-low.svg
VIN = 3.6 V, VOUT = 5 V, IOUT = 50 mA
Figure 10-11 Switching Waveform at Light Load
GUID-20230920-SS0I-SHHS-CPHK-XHH4R2GVZB06-low.svg
VIN = 2.0 V, VOUT = 3.3 V, 6.6-Ω resistance load
Figure 10-13 Shutdown Waveform
GUID-20230919-SS0I-NT9V-GF43-XKVHQJZ6TTCR-low.svg
VIN = 2.5 V to 4.6 V with 20-μs slew rate, VOUT = 5 V
IOUT = 800 mA
Figure 10-15 Line Transient
GUID-20230919-SS0I-DWHQ-2JHW-SWQRKSMH3FSQ-low.svg
VIN = 0 V to 3 V Sweep, VOUT = 3 V, 6.6-Ω resistance load
Figure 10-17 Line Sweep
GUID-20230919-SS0I-SJTZ-K1L3-PJFMFT6CJWQ0-low.svg
VIN = 2.5 V, VOUT = 3 V, 6.6-Ω resistance load
Figure 10-19 Output Short Protection (Recover)