SNVS075E May   2001  – May 2016 LM2592HV

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 LM2592HV-3.3
    6. 7.6 Electrical Characteristics LM2592HV-5.0
    7. 7.7 Electrical Characteristics LM2592HV-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
    3. 12.3 Thermal Considerations
  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

7 Specifications

7.1 Absolute Maximum Ratings(1)(2)

MIN MAX UNIT
Maximum supply voltage (VIN) 63 V
ON/OFF pin voltage −0.3 25 V
Feedback pin voltage −0.3 25 V
Output voltage to ground (steady-state) −1 V
Power dissipation Internally limited
Lead temperature      KTT package Vapor phase (60 sec.) 215 °C
Infrared (10 sec.) 245
NDH package Soldering (10 sec.) 260
Maximum junction temperature 150 °C
Storage temperature, Tstg −65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.

7.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)(2) ±2000 V
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) The human body model is a 100 pF capacitor discharged through a 1.5k resistor into each pin.

7.3 Recommended Operating Conditions

MIN MAX UNIT
Temperature −40 125 °C
Supply voltage 4.5 60 V

7.4 Thermal Information

THERMAL METRIC(1) LM2591HV UNIT
KTT (DDPAK/TO-263) NDH (TO-220)
5 PINS 5 PINS
RθJA Junction-to-ambient thermal resistance See (2)(3) 50 50 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 2 2 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.
(2) The package thermal impedance is calculated in accordance to JESD 51-7
(3) Thermal Resistances were simulated on a 4-layer, JEDEC board

7.5 Electrical Characteristics LM2592HV-3.3

Specifications are for TJ = 25°C unless otherwise specified.
PARAMETER TEST CONDITIONS MIN(1)   TYP(2)   MAX(1) UNIT
SYSTEM PARAMETERS – See Test Circuits(3)
VOUT Output voltage 4.75 V ≤ VIN ≤ 60 V,
0.2 A ≤ ILOAD ≤ 2 A		 3.168 3.3 3.432 V
over the full operating temperature range 3.135 3.465
η Efficiency VIN = 12 V, ILOAD = 2 A 76%
(1) All limits ensured at room temperature (TJ = 25°C) unless otherwise specified. All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely norm.
(3) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2592HV is used as shown in the Test Circuits, system performance will be as shown in system parameters section of Electrical Characteristics.

7.6 Electrical Characteristics LM2592HV-5.0

Specifications are for TJ = 25°C unless otherwise specified.
PARAMETER TEST CONDITIONS MIN(1)   TYP(2)  MAX(1) UNIT
SYSTEM PARAMETERS – See Test Circuits(3)
VOUT Output voltage 7 V ≤ VIN ≤ 60 V,
0.2 A ≤ ILOAD ≤ 2 A		 4.8 5 5.2 V
over the full operating temperature range 4.75 5.25
η Efficiency VIN = 12 V, ILOAD = 2 A 81%
(1) All limits ensured at room temperature (TJ = 25°C) unless otherwise specified. All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely norm.
(3) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2592HV is used as shown in the Test Circuits, system performance will be as shown in system parameters section of Electrical Characteristics.

7.7 Electrical Characteristics LM2592HV-ADJ

Specifications are for TJ = 25°C unless otherwise specified.
PARAMETER TEST CONDITIONS MIN(1)   TYP(2)   MAX(1) UNIT
SYSTEM PARAMETERS – See Test Circuits(3)
VFB Feedback voltage 4.5 V ≤ VIN ≤ 60 V,
0.2 A ≤ ILOAD ≤ 2 A
VOUT programmed for 3 V.
Circuit of Test Circuits		 1.193 1.23 1.267 V
over the full operating temperature range 1.18 1.28
η Efficiency VIN = 12 V, VOUT = 3 V, ILOAD = 2 A 75%
(1) All limits ensured at room temperature (TJ = 25°C) unless otherwise specified. All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely norm.
(3) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2592HV is used as shown in the Test Circuits, system performance will be as shown in system parameters section of Electrical Characteristics.

7.8 Electrical Characteristics All Output Voltage Versions

Specifications are for TJ = 25°C, VIN = 12V for the 3.3-V, 5-V, and adjustable version, and ILOAD = 500 mA unless otherwise specified.
PARAMETER TEST CONDITIONS MIN(1)   TYP(2) MAX(1) UNIT
DEVICE PARAMETERS
Ib Feedback bias current Adjustable Version Only,
VFB = 1.3 V		 10 50 nA
over the full operating temperature range 100
fO Oscillator frequency See(3) 127 150 173 kHz
over the full operating temperature range 110 173
VSAT Saturation voltage IOUT = 2 A(4)(5) 1.1 1.3 V
over the full operating temperature range 1.4
DC Max duty cycle (ON) See(5)(6) 100%
Min duty cycle (OFF) 0%
ICLIM Switch current limit Peak Current(4)(5) 2.4 3 3.7 A
over the full operating temperature range 2.3 4
IL Output leakage current Output = 0 V 5 50 μA
Output = −1 V(4)(6)(7) 5 30 mA
IQ Operating quiescent
current		 SD/SS Pin Open(6) 5 10 mA
ISTBY Standby quiescent
current		 SD/SS pin = 0 V(7) 90 200 μA
over the full operating temperature range 250
ON/OFF CONTROL – See Test Circuits
VIH
VIL		 ON /OFF pin logic input
threshold voltage		 Low (Regulator ON)
High (Regulator OFF)		 1.3 V
over the full operating temperature range 2 0.6
IH ON /OFF pin input current VLOGIC = 2.5 V (Regulator OFF) 5 15 μA
IL VLOGIC = 0.5 V (Regulator ON) 0.02 5 μA
(1) All limits ensured at room temperature (TJ = 25°C) unless otherwise specified. All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely norm.
(3) The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current overload.
(4) No diode, inductor or capacitor connected to output pin.
(5) Feedback pin removed from output and connected to 0 V to force the output transistor switch ON.
(6) Feedback pin removed from output and connected to 12 V for the 3.3-V, 5-V, and the ADJ. version to force the output transistor switch OFF.
(7) VIN = 60 V.

7.9 Typical Characteristics

(Circuit of Test Circuits)
LM2592HV 10129402.png Figure 1. Normalized Output Voltage
LM2592HV 10129404.png Figure 3. Efficiency
LM2592HV 10129406.png Figure 5. Switch Current Limit
LM2592HV 10129408.png Figure 7. Operating Quiescent Current
LM2592HV 10129410.png Figure 9. Minimum Operating Supply Voltage
LM2592HV 10129413.png Figure 11. Switching Frequency
LM2592HV 10129480.png Figure 13. ON/OFF Pin Current (Sinking)
LM2592HV 10129420.png
Continuous Mode Switching Waveforms VIN = 20V, VOUT = 5V, ILOAD = 2A L = 32 μH, COUT = 220 μF, COUT ESR = 50 mΩ
Output Pin Voltage, 10V/div.
Inductor Current 1A/div.
Output Ripple Voltage, 50 mV/div.
Figure 15. Horizontal Time Base: 2 μs/div
LM2592HV 10129421.png
Load Transient Response for Continuous Mode VIN = 20V, VOUT = 5V, ILOAD = 500 mA to 2A L = 32 μH, COUT = 220 μF, COUT ESR = 50 mΩ
Output Voltage, 100 mV/div. (AC)
500 mA to 2A Load Pulse
Figure 17. Horizontal Time Base: 50 μs/div
LM2592HV 10129403.png Figure 2. Line Regulation
LM2592HV 10129405.png Figure 4. Switch Saturation Voltage
LM2592HV 10129407.png Figure 6. Dropout Voltage
LM2592HV 10129409.png Figure 8. Shutdown Quiescent Current
LM2592HV 10129411.png Figure 10. Feedback Pin Bias Current
LM2592HV 10129479.png Figure 12. ON/OFF Threshold Voltage
LM2592HV 10129478.png Figure 14. Internal Gain-Phase Characteristics
LM2592HV 10129419.png
Discontinuous Mode Switching Waveforms VIN = 20V, VOUT = 5V, ILOAD = 500 mA L = 10 μH, COUT = 330 μF, COUT ESR = 45 mΩ
Output Pin Voltage, 10V/div.
Inductor Current 0.5A/div.
Output Ripple Voltage, 100 mV/div.
Figure 16. Horizontal Time Base: 2 μs/div
LM2592HV 10129422.png
Load Transient Response for Discontinuous Mode VIN = 20V, VOUT = 5V, ILOAD = 500 mA to 2A L = 10 μH, COUT = 330 μF, COUT ESR = 45 mΩ
Output Voltage, 100 mV/div. (AC)
500-mA to 2-A Load Pulse
Figure 18. Horizontal Time Base: 200 μs/div