LM2577T-ADJ/NOPB The Texas Instruments LM2577T-ADJ/NOPB is an adjustable step-up DC/DC switching regulator. It features a wide input voltage range and a 3A switch current limit.
Mfr Part #:

LM2577T-ADJ/NOPB

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LM2577T-ADJ/NOPB is an adjustable step-up DC/DC switching regulator. It features a wide input voltage range and a 3A switch current limit.
✓ Total Stock: 5,483 pcs
$ Price Range: $3.64

LM2577T-ADJ/NOPB Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
3,362 pcs
3362 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
1,340 pcs
1340 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
769 pcs
769 pcs On Request 1 On Request On Request 21+ On Request On Request
Non-Authorised Inventory information
12 pcs
12 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

LM2577T-ADJ/NOPB Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Duty Cycle
Frequency
Function
Input Voltage
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Quiescent Current
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage

LM2577T-ADJ/NOPB Description

Short technical summary and product information.

The LM2577T-ADJ/NOPB from Texas Instruments is a monolithic integrated circuit designed for step-up (boost), flyback, and forward converter switching regulators. It requires few external components, making it a cost-effective and simple solution for power management.

 

This regulator operates with an input voltage range of 3.5V to 40V and can handle a switch current limit of up to 3A. It features current-mode operation for improved transient response and line regulation, a fixed 52kHz internal oscillator, and a soft-start function to reduce in-rush current. The output voltage is adjustable, with a minimum output voltage of 1.23V and a maximum of 60V.

 

The device is available in a TO-220-5 package and is designed for through-hole mounting. Its operating temperature range is -40°C to 125°C (TJ). The LM2577T-ADJ/NOPB is protected by current limit, under-voltage lockout, and thermal shutdown.

 

Typical applications include simple boost regulators, flyback and forward regulators, and multiple-output regulators.

LM2577T-ADJ/NOPB Quick Information

Product Type: DC DC Switching Regulator
Series: SIMPLE SWITCHER
Canonical Name: LM2577T-ADJ/NOPB Step-Up Voltage Regulator
Subcategory: Voltage Regulators

LM2577T-ADJ/NOPB Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LM2577T-ADJ/NOPB Estimated Pricing

Qty Low High
1+ $3.64 $3.64

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM2577T-ADJ/NOPB Features

  • Adjustable step-up voltage regulator.
  • Wide 3.5V to 40V input voltage range.
  • 3A switch current limit.
  • Fixed 52kHz switching frequency.
  • TO-220-5 package for through-hole mounting.

LM2577T-ADJ/NOPB Applications

  • Used in battery-powered systems for voltage step-up.
  • Ideal for LCD bias supplies.
  • Suitable for local on-board power supplies.
  • Can be configured as flyback regulator.

LM2577T-ADJ/NOPB FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LM2577T-ADJ/NOPB?

The input voltage range is 3.5V to 40V.

What is the output voltage range?

The output voltage is adjustable from 1.23V to 60V.

What is the maximum output current?

The typical output current is 3A (switch current limit).

What is the switching frequency?

The switching frequency is fixed at 52kHz.

What is the operating temperature range?

The operating junction temperature range is -40°C to 125°C.

What package is the LM2577T-ADJ/NOPB available in?

It is available in a TO-220-5 through-hole package.

What is the typical quiescent current?

The typical quiescent current is 0.01mA (10µA).

Home

Categories