D2577
Category:
DC/DC Series Circuit
key word:
Description
Input voltage range
Output voltage
Internal benchmark
Output voltage accuracy
Output current
Switching frequency（kHz）
Operating temperature range
Packaging form
Compatible models
General Description
The D2577 is a monolithic integrated circuit 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 workwith 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
Applications
· Simple boost regulator
· Flyback and forward regulators
· Multiple-output regulator
Product manual
Product Consultation
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