SNVS084C December   2001  – July 2016 LM2590HV

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Electrical Characteristics - 3.3-V Version
    7. 6.7 Electrical Characteristics - 5-V Version
    8. 6.8 Electrical Characteristics - Adjustable Version
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Test Circuits
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Undervoltage Lockout
      2. 8.3.2 SHUTDOWN/SOFT-START
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Active Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Feedforward Capacitor, CFF
      2. 9.1.2 Input Capacitor, CIN
      3. 9.1.3 Output Capacitor, COUT
      4. 9.1.4 Catch Diode
      5. 9.1.5 Inverting Regulator
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Inductor Selection Procedure
          1. 9.2.2.1.1 Example 1: VIN ≤ 40 V, 5-V Version, VIN = 24 V, Output = 5 V at 1 A
          2. 9.2.2.1.2 Example 2: VIN > 40 V, 5-V Version, VIN = 48 V, Output = 5 V at 1.5 A
          3. 9.2.2.1.3 Example 3: VIN ≤ 40 V, Adjustable Version, VIN = 20 V, Output = 10 V at 2 A
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
    3. 11.3 Thermal Considerations
  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 Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

7 Parameter Measurement Information

7.1 Test Circuits

LM2590HV fixed_output_voltage_versions_snvs084.gif
Component Values shown are for VIN = 15 V,
VOUT = 5 V, ILOAD = 1 A.
CIN — 470-µF, 50-V aluminum electrolytic Nichicon PM Series
COUT — 220-µF, 25-V aluminum electrolytic Nichcon PM Series
D1 — 2-A, 60-V Schottky Rectifier, 21DQ06 (international rectifier)
L1 — 68 µH, see Inductor Selection Procedure
Figure 24. Fixed Output Voltage Versions
LM2590HV adjustable_output_voltage_versions_snvs084.gif
Select R1 to be approximately 1 kΩ, use a 1% resistor for best stability.
Component values shown are for VIN = 20 V,
VOUT = 10 V, ILOAD = 1 A.
CIN — 470-µF, 35-V aluminum electrolytic Nichicon PM Series
COUT — 220-µF, 35-V aluminum electrolytic Nichicon PM Series
D1 — 2-A, 60-V Schottky Rectifier, 21DQ06 (international rectifier)
L1 — 100 µH, see Inductor Selection Procedure
R1 — 1 kΩ, 1%
R2 — 7.15 k, 1%
CFF — 3.3 nF
Typical Values
CSS — 0.1 µF
CDELAY — 0.1 µF
RPULL UP — 4.7 k (use 22 k if VOUT is ≥ 45 V)
† Resistive divider is required to avoid exceeding maximum rating of 45 V, 3 mA on or into flag pin.
†† Small signal Schottky diode to prevent damage to feedback pin by negative spike when output is shorted. Required if VIN > 40 V
Figure 25. Adjustable Output Voltage Versions