LM2577S-12

$3.76

Description：IC REG BST FLYBACK 12V 3A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube

SKU:2590dc2975e2 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LM2577S-12 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG BST FLYBACK 12V 3A TO263. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM2577S-12

Description：IC REG BST FLYBACK 12V 3A TO263
Series：SIMPLE SWITCHER®
Mfr：Texas Instruments
Package：Tube
Function：Step-Up, Step-Up/Step-Down
Output Configuration：Positive or Negative
Topology：Boost, Flyback, Forward Converter
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：3.5V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：12V
Voltage - Output (Max)：-
Current - Output：3A (Switch)
Frequency - Switching：52kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package：TO-263 (DDPAK-5)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM2577S-12

LM2577S-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2577S-12 is a SIMPLE SWITCHER step-up voltage regulator from Texas Instruments, housed in a TO-263 surface-mount package. It delivers a fixed 12V output with a maximum switch current of 3A. The device supports an input voltage range up to 40V and operates at a switching frequency of 52kHz. It features internal compensation for minimal external component count and includes thermal shutdown protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated power switch rated for 3A continuous current
Fixed 12V output option within the SIMPLE SWITCHER family
Internal frequency compensation reduces external component requirements
Thermal shutdown protection safeguards against overheating

Voltage Regulators - DC DC Switching Regulators Applications

Industrial control systems requiring isolated or boosted power rails
Battery-powered equipment needing voltage elevation
Positive or negative DC-DC conversion topologies
Pre-regulator stages for downstream linear regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm lead-free compliance and RoHS status. Confirm the package variant matches the required footprint, as TO-263 variants exist. Check datasheet revisions for any pinout or electrical characteristic updates before finalizing the design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a fixed 12V boost topology is required with high current capability. Ensure the input voltage remains below the 40V absolute maximum rating. Consider the 52kHz switching frequency for EMI constraints compared to higher-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the SIMPLE SWITCHER family, which emphasizes ease of design through integrated controllers and power switches. The LM2577 series specifically targets step-up applications, offering robust performance in a compact form factor suitable for various industrial and commercial power supply designs.