ZHCSJ71G april   2010  – june 2023 DLPA200

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Device Configurations Table
  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 Control Logic
    6. 7.6  5-V Linear Regulator
    7. 7.7  Bias Voltage Boost Converter
    8. 7.8  Reset Voltage Buck-Boost Converter
    9. 7.9  VOFFSET/DMDVCC2 Regulator
    10. 7.10 Switching Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 5-V Linear Regulator
      2. 8.3.2 Bias Voltage Boost Converter
      3. 8.3.3 Reset Voltage Buck-Boost Converter
      4. 8.3.4 VOFFSET/DMDVCC2 Regulator
      5. 8.3.5 Serial Communications Port (SCP)
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Component Selection Guidelines
  11. 10Power Supply Recommendations
    1. 10.1 Power Supply Rail Guidelines
  12. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Grounding Guidelines
    2. 11.2 Thermal Considerations
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Device Nomenclature
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 静电放电警告
    6. 12.6 术语表
  14. 13Mechanical, Packaging, and Orderable Information

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7.8 Reset Voltage Buck-Boost Converter

TA = 25°C, P12V = 10.8 V to 13.2 V (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
IRLOutput current: reset outputsLoad = 400 pF, 39 Ω,
repetition frequency = 50 kHz		018mA
IQLOutput current: quiescent / driversLoad = 400 pF, 39 Ω ,
repetition frequency = 50 kHz		3mA
ICLFRCurrent limit flagCorresponding current on output at
P12V = 10.8 V		25mA
ICLRCurrent limitMeasured on input400800mA
VRESETOutput voltage–25.5–26–26.5V
VUVRUndervoltage thresholdReset voltage falling5092%VRESET
RDSBuck-boost switch RDS(on)TJ = 25°C8Ω
VRIPOutput ripple voltage(1)200mVpk-pk
FSWSwitching frequency1.11.31.5MHz
VOSRVoltage overshoot at start up2%VRESET
tssPower upCOUT = 3.3 µF, Measured between 10 to 90% of target VRESET1ms
tdisDischarge current sink400mA
(1) Output ripple voltage relies on suitable external components being selected and good printed circuit board layout practice.