SNVS074E May   2001  – May 2016 LM2591HV

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  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 LM2591HV-3.3
    6. 7.6 Electrical Characteristics LM2591HV-5.0
    7. 7.7 Electrical Characteristics LM2591HV-ADJ
    8. 7.8 Electrical Characteristics All Output Voltage Versions
    9. 7.9 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Test Circuits
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Delayed Start-Up
      2. 9.3.2 Undervoltage Lockout
    4. 9.4 Device Functional Modes
      1. 9.4.1 Shutdown Mode
      2. 9.4.2 Active Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Feedforward Capacitor
      2. 10.1.2 Input Capacitor
      3. 10.1.3 Output Capacitor
      4. 10.1.4 Catch Diode
      5. 10.1.5 Inverting Regulator
      6. 10.1.6 Inverting Regulator Shutdown Methods
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Inductor Selection Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Examples
  13. 13Device and Documentation Support
    1. 13.1 Community Resources
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

8 Parameter Measurement Information

8.1 Test Circuits

LM2591HV 10129324.png
Component Values shown are for VIN = 15V,
VOUT = 5V, ILOAD = 1A.
CIN — 470 μF, 50V, Aluminum Electrolytic Nichicon “PM Series”
COUT — 220 μF, 25V Aluminum Electrolytic, Nichicon “PM Series”
D1 — 2A, 60V Schottky Rectifier, 21DQ06 (International Rectifier)
L1 — 68 H, See Inductor Selection Procedure
Figure 19. Fixed Output Voltage Versions
LM2591HV 10129325.png
Select R1 to be approximately 1 kΩ, use a 1% resistor for best stability.
Component Values shown are for VIN = 20V,
VOUT = 10V, ILOAD = 1A.
CIN: — 470 μF, 35V, Aluminum Electrolytic Nichicon “PM Series”
COUT: — 220 μF, 35V Aluminum Electrolytic, Nichicon “PM Series”
D1 — 2A, 60V Schottky Rectifier, 21DQ06 (International Rectifier)
See Inductor Selection Procedure L1 — 100 μH,
R1 — 1 kΩ, 1%
R2 — 7.15k, 1%
CFF — 3.3 nF
Typical Values
CSS—0.1 μF
CDELAY—0.1 μF
RPULL UP — 4.7k (use 22k if VOUT is ≥ 45V)
† Small signal Schottky diode to prevent damage to feedback pin by negative spike when output is shorted. Required if VIN > 40V
Figure 20. Adjustable Output Voltage Versions