LM2577T-ADJ/NOPB Conv 3A TO220-5 Integrated Circuits Ics

Basic Information
Place of Origin: Shenzhen, China
Brand Name: Texas Instruments
Certification: Original Part
Model Number: LM2577T-ADJ/NOPB
Minimum Order Quantity: 1PCS
Price: to be Negotiated
Packaging Details: TO220-5
Delivery Time: Immediate
Payment Terms: T/T, Western Union, Paypal, Wechat Pay
Supply Ability: 1 Million pieces per Month
Packaging: TO220-5 Product Description: Switching Voltage Regulators STEP-UP VLTG REG
Product Type: IC REG MULT CONFG ADJ 3A TO220-5 Operating Temp Range: -40C To 125C
High Light:



TO220-5 Switching Voltage Regulators

LM2577T-ADJ/NOPB Conv DC-DC 3.5V to 40V Step Up Single-Out 11.6V to 12.4V 3A 5-Pin(5+Tab) TO-220 Tube





Descriptions :


The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable.


Requiring a minimum number of external components, these regulators are cost effective, and simple to use. Listed in this data sheet are a family of standard inductors and flyback transformers designed to work with these switching regulators.


Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and thermal limiting, and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no external components, a soft start mode to reduce in-rush current during start-up, and current mode control for improved rejection of input voltage and output load transients.



Features :

  • Requires Few External Components.
  • NPN Output Switches 3.0A, can Stand off 65V.
  • Wide Input Voltage Range: 3.5V to 40V.
  • Current-mode Operation for Improved Transient Response, Line Regulation, and Current Limit.
  • 52 kHz Internal Oscillator.
  • Soft-start Function Reduces In-rush Current During Start-up.
  • Output Switch Protected by Current Limit, Under-voltage Lockout, and Thermal Shutdown.


Technical Specifications :


Tab Tab
Package Height 9.25(Max)
Package Width 4.83(Max)
Package Length 10.67(Max)
PCB changed 5
Lead Shape Through Hole
Mounting Through Hole
Type Step Up
Output Type Adjustable
Switching Frequency (kHz) 48 to 56
Switching Regulator Yes
Number of Outputs 1
Output Voltage (V) 11.6 to 12.4
Maximum Output Current (A) 3
Minimum Input Voltage (V) 3.5
Maximum Input Voltage (V) 40
Operating Supply Voltage (V) 3.5 to 40
Typical Switch Current (A) 5.3(Max)
Typical Quiescent Current (uA) 10000
Line Regulation 50mV
Load Regulation 50mV
Efficiency (%) 80(Typ)
Minimum Operating Temperature (°C) -40
Maximum Operating Temperature (°C) 125
Packaging Tube
Supplier Package TO-220
Standard Package Name TO-220
Pin Count 5





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