SNVS397F September   2005  – December 2025 LM5005

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 High-Voltage Start-Up Regulator
      2. 6.3.2 Shutdown and Standby
      3. 6.3.3 Oscillator and Synchronization Capability
      4. 6.3.4 Error Amplifier and PWM Comparator
      5. 6.3.5 RAMP Generator
      6. 6.3.6 Current Limit
      7. 6.3.7 Soft-Start Capability
      8. 6.3.8 MOSFET Gate Driver
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
      2. 6.4.2 Standby Mode
      3. 6.4.3 Light-Load Operation
      4. 6.4.4 Thermal Shutdown Protection
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Reducing Bias Power Dissipation
      2. 7.1.2 Input Voltage UVLO Protection
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1  Custom Design With WEBENCH® Tools
        2. 7.2.2.2  Frequency Set Resistor (RT)
        3. 7.2.2.3  Inductor (LF)
        4. 7.2.2.4  Ramp Capacitor (CRAMP)
        5. 7.2.2.5  Output Capacitors (COUT)
        6. 7.2.2.6  Schottky Diode (DF)
        7. 7.2.2.7  Input Capacitors (CIN)
        8. 7.2.2.8  VCC Capacitor (CVCC)
        9. 7.2.2.9  Bootstrap Capacitor (CBST)
        10. 7.2.2.10 Soft Start Capacitor (CSS)
        11. 7.2.2.11 Feedback Resistors (RFB1 and RFB2)
        12. 7.2.2.12 RC Snubber (RS and CS)
        13. 7.2.2.13 Compensation Components (RC1, CC1, CC2)
        14. 7.2.2.14 Bill of Materials
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 PCB Layout for EMI Reduction
        2. 7.4.1.2 Thermal Design
        3. 7.4.1.3 Ground Plane Design
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Third-Party Products Disclaimer
    2. 8.2 Device Support
      1. 8.2.1 Development Support
        1. 8.2.1.1 Custom Design With WEBENCH® Tools
    3. 8.3 Documentation Support
      1. 8.3.1 Related Documentation
        1. 8.3.1.1 PCB Layout Resources
        2. 8.3.1.2 Thermal Design Resources
    4. 8.4 Receiving Notification of Documentation Updates
    5. 8.5 Support Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.2.2.14 Bill of Materials

Table 7-1 lists the bill of materials for the design example.

Table 7-1 LM5005 Buck Regulator Bill of Materials, VOUT = 5V, IOUT = 2.5A
REF DESDESCRIPTIONVENDOR(1)PART NUMBERQUANTITY
CIN1, CIN2CAPACITOR, CER, 2.2 µF, 100V, X7R, 1210TDKC3225X7R2A225M2
COUT1CAPACITOR, SP, 150 µF, 6.3V, 12mΩPanasonicEEFHE0J151R1
COUT2CAPACITOR, CER, 22 µF, 16V, X7R, 1210TDKC3225X7R1C226M1
CSCAPACITOR, CER, 330pF, 100V, 0603KemetC0603C331G1GAC1
CC1, CSSCAPACITOR, CER, 10nF, 100V, 0603TDKC1608X7R2A103K2
CBSTCAPACITOR, CER, 22nF, 100V, 0603TDKC1608X7R2A223K1
CVCCCAPACITOR, CER, 0.47 µF, 16V, 0604TDKC1608X7R1C474M1
CRAMPCAPACITOR, CER, 330pF, 100V, 0603KemetC0603C331G1GAC1
DFDIODE, 100V, 6A, Schottky, DPAKCentral SemiCSHD6-100C1
DIODE, 100V, 6A, Schottky (alternative)IR6CWQ10FN
LFINDUCTOR, 33 µH, ISAT 6.22A, DCR 60mΩCoiltronics/EatonDR127-330-R1
RTRESISTOR, 20.5kΩ, 0603Vishay DaleCRCW06032052F1
RC1RESISTOR, 49.9kΩ, 0603Vishay DaleCRCW06034992F1
RFB1RESISTOR, 5.11kΩ, 0603Vishay DaleCRCW06035111F1
RFB2RESISTOR, 1.65kΩ, 0603Vishay DaleCRCW06031651F1
RSRESISTOR, 10Ω, 1W, 1206Vishay DaleCRCW1206100J1
U1Wide VIN Regulator, 75V, 2.5ATexas InstrumentsLM50051