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LM2587T-ADJ/NOPB

TILM2587T-ADJ/NOPB

Texas Instruments
Higher-switch-current step-up regulator (higher output power capability) in a similar integrated-switch form factor for designs needing more than 3 A switch capability.
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Overview

The LM2587T-ADJ/NOPB is a monolithic switching regulator designed for step-up (boost), flyback, and forward converter topologies. It integrates a 5A power switch, allowing for higher output power capabilities compared to devices with lower switch currents. This adjustable output regulator operates at a fixed switching frequency of 100kHz.

Why Choose This Part

This regulator offers current-mode operation, which provides excellent line and load regulation. Its integrated 5A switch allows for higher power output designs. Features like undervoltage lockout, thermal shutdown, and current limit protection enhance system reliability and robustness.

Applications

Power Supplies for Displays
Providing the necessary higher voltage rails for various display technologies.
Portable Equipment Power
Generating higher voltages from a lower battery voltage in portable electronic devices.
Multi-Output Power Supplies
Serving as the core of power supplies requiring multiple isolated or non-isolated output voltages through flyback or forward converter configurations.
Industrial Control Systems
Supplying power in industrial applications where higher voltage or isolated rails are needed from a lower DC source.
Automotive Systems (Non-AEC-Q100)
Boosting voltage in general automotive auxiliary systems where the component's operating temperature range of -40 degC to 125 degC is suitable.

Key Specifications

Function Step-Up, Step-Up/Step-Down
Topology Boost, Flyback, Forward Converter
Output Type Adjustable
Mounting Type Through Hole
Package / Case TO-220-5 Formed Leads
Current - Output 5A (Switch)
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 100kHz
Operating Temperature -40degC ~ 125degC (TJ)
Synchronous Rectifier No
Voltage - Input (Max) 40V
Voltage - Input (Min) 4V
Voltage - Output (Max) 60V
Supplier Device Package TO-220-5
Voltage - Output (Min/Fixed) 1.23V

Getting Started

To get started with the LM2587T-ADJ/NOPB, engineers should consult the device's datasheet for recommended external component selection (inductors, diodes, capacitors) and layout guidelines specific to boost, flyback, or forward converter designs. Simulation tools like TI's WEBENCH Power Designer can aid in component selection and circuit optimization.

Also Consider

LM2577T-ADJ/NOPB TITexas Instruments - This is a 3A switch current version from the same family, suitable for designs requiring less output power.
LTC1871EMS#PBF ADIAnalog Devices Inc. - This is a current-mode boost/SEPIC/flyback controller that requires an external switch, offering more flexibility for very high power or specific switch requirements.
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