SNVS631D January   2010  – October 2016 LM5035C

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 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 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  High-Voltage Start-Up Regulator
      2. 8.3.2  Line Undervoltage Detector
      3. 8.3.3  Line Overvoltage, Load Overvoltage, and Remote Thermal Protection
      4. 8.3.4  Reference
      5. 8.3.5  Cycle-by-Cycle Current Limit
      6. 8.3.6  Overload Protection Timer
      7. 8.3.7  Soft Start
      8. 8.3.8  PWM Comparator
      9. 8.3.9  Feedforward Ramp and Volt • Second Clamp
      10. 8.3.10 Oscillator, Sync Capability
      11. 8.3.11 Gate Driver Outputs (HO and LO)
      12. 8.3.12 Synchronous Rectifier Control Outputs (SR1 and SR2)
      13. 8.3.13 Thermal Protection
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 VIN
        2. 9.2.2.2 For Applications >100 V
        3. 9.2.2.3 Current Sense
        4. 9.2.2.4 HO, HB, HS, and LO
        5. 9.2.2.5 Programmable Delay (DLY)
        6. 9.2.2.6 UVLO and OVP Voltage Divider Selection For R1, R2, and R3
        7. 9.2.2.7 Fault Protection
        8. 9.2.2.8 Hiccup Mode Current Limit Restart (RES)
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resource
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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5 Device Comparison Table

PERFORMANCE FEATURE(1)(2) LM5035 LM5035A LM5035B LM5035C
Sync Rectifier Dead-time Ratio (T1:T2) 2:1 3:1 3:1 3:1
Soft-start: Hiccup Mode Charging Current 50 µA:1 µA 100 µA:1 µA 100 µA:1 µA 100 µA:1 µA
Bootstrap (HB-HS) Undervoltage Lockout 5 V 3.9 V 3.9 V 3.9 V
Start-up Regulator Current 20 mA (min) 25 mA (min) 40 mA (min) 40 mA (min)
SR State in UVLO Shutdown and Hiccup Current Limit High High Low Low
HO,LO On-Time at Maximum Duty Cycle 0.5*T-T1–70 ns 0.5*T-T1–70 ns 0.5*T-T1 0.5*T-T1
Soft-Stop after UVLO HO,LO Yes Yes Yes No
SR1,2 Yes Yes No No
SR1, SR2 VOH (high state output) VCC VCC VCC REF (5 V)
(1) T1 = Delay from SR1, SR2 to leading edge of HO, LO
(2) T = Period of HO or LO