JAJSAQ4F January   2007  – May 2021 LM5002

PRODUCTION DATA  

  1. 特長
  2. アプリケーション
  3. 概要
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 High Voltage VCC Regulator
      2. 7.3.2 Oscillator
      3. 7.3.3 External Synchronization
      4. 7.3.4 Enable and Standby
      5. 7.3.5 Error Amplifier and PWM Comparator
      6. 7.3.6 Current Amplifier and Slope Compensation
      7. 7.3.7 Power MOSFET
    4. 7.4 Device Functional Modes
      1. 7.4.1 Thermal Protection
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 VIN
      2. 8.1.2 SW PIN
      3. 8.1.3 EN or UVLO Voltage Divider Selection
      4. 8.1.4 Soft Start
    2. 8.2 Typical Applications
      1. 8.2.1 Non-Isolated Flyback Regulator
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Switching Frequency
          2. 8.2.1.2.2 Flyback Transformer
          3. 8.2.1.2.3 Peak MOSFET Current
          4. 8.2.1.2.4 Output Capacitance
          5. 8.2.1.2.5 Output Diode Rating
          6. 8.2.1.2.6 Power Stage Analysis
          7. 8.2.1.2.7 Loop Compensation
      2. 8.2.2 Isolated Flyback Regulator
        1. 8.2.2.1 Design Requirements
      3. 8.2.3 Boost Regulator
        1. 8.2.3.1 Design Requirements
      4. 8.2.4 24-V SEPIC Regulator
        1. 8.2.4.1 Design Requirements
      5. 8.2.5 12-V Automotive SEPIC Regulator
        1. 8.2.5.1 Design Requirements
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 サポート・リソース
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Electrical Characteristics

Typical values at TJ = 25°C, minimum and maximum values at TJ = –40°C to 125°C, VVIN = 10 V, and RRT = 48.7 kΩ (unless otherwise noted)(1)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
STARTUP REGULATOR
VVCC-REGVCC regulator output6.556.857.15V
VCC current limitVVCC = 6 V1520mA
VCC UVLO thresholdVVCC increasing2.62.83V
VCC undervoltage hysteresis0.1V
IINBias currentVFB = 1.5 V3.14.5mA
IQShutdown current (IIN)VEN = 0 V95130µA
EN THRESHOLDS
EN shutdown thresholdVEN increasing0.250.450.65V
EN shutdown hysteresis0.1V
EN standby thresholdVEN increasing1.21.261.32V
EN standby hysteresis0.1V
EN current source6µA
MOSFET CHARACTERISTICS
MOSFET RDS(ON) plus
current sense resistance
ID = 0.25 A8501600
MOSFET leakage currentVSW = 75 V0.055µA
MOSFET gate chargeVVCC = 6.9 V2.4nC
CURRENT LIMIT
ILIMCycle by cycle current limit0.40.50.6A
Cycle by cycle current limit delay100200ns
OSCILLATOR
FSW1Frequency1RRT = 48.7 kΩ225260295KHz
FSW2Frequency2RRT = 15.8 kΩ660780900KHz
VRT-SYNCSYNC threshold2.22.63.2V
SYNC pulse width minimumVRT > VRT-SYNC + 0.5 V15ns
PWM COMPARATOR
Maximum duty cycle80%85%90%
Minimum ON-timeVCOMP > VCOMP-OS25ns
Minimum ON-timeVCOMP < VCOMP-OS0ns
VCOMP-OSCOMP to PWM comparator offset0.91.31.55V
ERROR AMPLIFIER
VFB-REFFeedback reference voltageInternal reference and VFB = VCOMP1.2411.261.279V
FB bias current10nA
DC gain72dB
COMP sink currentVCOMP = 250 mV2.5mA
COMP short circuit currentVFB = 0 V and VCOMP = 0 V0.91.21.5mA
COMP open circuit voltageVFB = 0 V4.85.56.2V
COMP to SW delay42ns
Unity gain bandwidth3MHz
THERMAL SHUTDOWN
TSDThermal shutdown threshold165°C
Thermal shutdown hysteresis20°C
Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate TI’s Average Outgoing Quality Level (AOQL).