LM2577T-ADJ

LM2577T-ADJ - SIMPLE SWITCHER Step-Up Voltage Regulator - National Semiconductor

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Price:: US $1.20~1.50 / piece [Get Latest Price]

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Qty (lots)	Price/lot
1 ~ 10 :	1.50 / Piece
10 ~ 100 :	1.35 / Piece
100 ~ 1000 :	1.20 / Piece

PartNumber:: LM2577T-ADJ

Brand:: National Semiconductor - NS | Pack: TO | D/C: 10+

Availability:: Supply Ability: 10000/Month Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2013-05-29

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Part Number:LM2577T-ADJ
US $1.20 - 1.50
NATIONAL SEMICONDUCTOR , TO-220-5 STRAIGHT LEAD

US $1.50 - 1.50 / Piece
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Product Summary

General 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 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

Parametrics

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage 45V
Output Switch Voltage 65V
Output Switch Current (Note 2) 6.0A
Power Dissipation Internally Limited
Storage Temperature Range -65℃ to +150℃
Lead Temperature(Soldering, 10 sec.) 260℃
Maximum Junction Temperature 150℃
Minimum ESD Rating(C = 100 pF, R = 1.5 kΩ) 2 kV

Features

Features
(1) Requires few external components;
(2) NPN output switches 3.0A, can stand off 65V;
(3) Wide input voltage range: 3.5V to 40V;
(4) Current-mode operation for improved transient response, line regulation, and current limit;
(5) 52 kHz internal oscillator;
(6) Soft-start function reduces in-rush current during start-up;
(7) Output switch protected by current limit, under-voltage lockout, and thermal shutdown