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> LM2577 step-up 3A integrated switching regulator ic (X4
LM2577 step-up 3A integrated switching regulator ic (X4
Qty: 4 LM/UC2577 -T-ADJ 5 pin TO220
STEP-UP Adjustable Switching Regulator
54KHz operation - High efficiency
The UC2577-ADJ device provides all the active functions necessary
to implement step-up (boost), flyback, and forward converter
switching regulators. Requiring only a few components, these simple
regulators efficiently provide up to 60V as a step-up regulator,
and even higher voltages as a flyback or forward converter regulator.
The UC2577-ADJ features a wide input voltage range of 3.0V to
40V and an adjustable output voltage. An on-chip 3.0A NPN switch
is included with undervoltage lockout, thermal protection circuitry,
and current limiting, as well as soft start mode operation to reduce
current during startup. Other features include a 52kHz fixed frequency
on-chip oscillator with no external components and current
mode control for better line and load regulation.
