Position: Home  > All Categories> Integrated Circuits (ICs) > LM2577

LM2577

Features: Requires few external componentsNPN output switches 3.0A, can stand off 65VWide input voltage range: 3.5V to 40VCurrent-mode operation for improved transient response, line regulation, and current limit52 kHz internal oscillatorSoft-start function reduces in-rush current during start-upO...

product image

LM2577 Picture
See larger image
SeekIC No. : 004394893 Detail

LM2577: Features: Requires few external componentsNPN output switches 3.0A, can stand off 65VWide input voltage range: 3.5V to 40VCurrent-mode operation for improved transient response, line regulation, and...

LM2577 Data Sheet

floor Price/Ceiling Price

Get Latest Price
Part Number:
LM2577
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

SeekIC Buyer Protection PLUS - newly updated for 2013!

  • Escrow Protection.
  • Guaranteed refunds.
  • Secure payments.
  • Learn more >>

Month Sales

268 Transactions

Rating

evaluate  (4.8 stars)

Upload time: 2025/12/7

add to my favourite

Payment Methods

All payment methods are secure and covered by SeekIC Buyer Protection PLUS.

Notice: When you place an order, your payment is made to SeekIC and not to your seller. SeekIC only pays the seller after confirming you have received your order. We will also never share your payment details with your seller.
Product Details

Description



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




Application

Simple boost regulator
Flyback and forward regulators
Multiple-output regulator




Pinout

Connection Diagram




Specifications

Supply Voltage 45V
Output Switch Voltage65V
Output Switch Current (Note 2) 6.0A
Power Dissipation Internally Limited
Storage Temperature Range −65˚C to +150˚C
Lead Temperature
(Soldering, 10 sec.) 260˚C
Maximum Junction Temperature150˚C
Minimum ESD Rating
(C = 100 pF, R = 1.5 kΩ)2kV

Output Range 15V, 1.23V min, 12V
Switch Current 3 Amp
Input Min Voltage 3.5 Volt
Input Max Voltage 40 Volt
Feedback Voltage 1.23, 12, 15 Volt
Frequency Max 52 kHz
Efficiency (peak) 80 %
Sync Pin No
Adj Switch Frequency No
Frequency Min 52 kHz
On/Off Pin No
Error Flag No
SoftStart Yes
Special Features SIMPLE SWITCHER regulator
Topology Boost, Flyback
Step-Up Yes
Inverting No
Flyback Yes
RegType Switching Regulator
Adjustable Output No, Yes
Temperature Min -40 deg C
Temperature Max 125 deg C
Regulator Family SIMPLE SWITCHER
View Using Catalog





Description

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 LM2577 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.






Customers Who Bought This Item Also Bought

Margin,quality,low-cost products with low minimum orders. Secure your online payments with SeekIC Buyer Protection.
You may also be interested in :
Transformers
TM-09210
BV222-1-00992
Computers, Office - Components, Accessories
DS-4008HCI
LB104V03(A1)
Sensors, Transducers
GP2Y0D340K
PAN3509DH-TXWA
Tools
TCP202
G084SN05 V.3
Batteries, Chargers, Holders
ICR18650-28A
ICR18650-26F/h
Inductors, Coils, Chokes
DR127-330-R
SD53-100-R
View more