TI LM5023MMX-2/NOPB

Изолированный7,5 В ~ 45 В65 W

Overview

The LM5023MMX-2/NOPB is a quasi-resonant pulse width modulated (PWM) controller which contains all of the features needed to implement a highly efficient off-line power supply. The LM5023MMX-2/NOPB uses the transformer auxiliary winding for demagnetization detection to ensure critical conduction mode (CrCM) operation. The LM5023MMX-2/NOPB features a hiccup mode for overcurrent protection with an auto restart to reduce the stress on the power components during an overload. A skip-cycle mode reduces power consumption at light loads for energy conservation applications (ENERGY STAR?, CEPCP, and so forth). The LM5023MMX-2/NOPB also uses the transformer auxiliary winding for output overvoltage protection (OVP); if an OVP fault is detected the LM5023MMX-2/NOPB latches off the controller.

The LM5023 is a quasi-resonant pulse width modulated (PWM) controller which contains all of the features needed to implement a highly efficient off-line power supply. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure critical conduction mode (CrCM) operation. The LM5023 features a hiccup mode for overcurrent protection with an auto restart to reduce the stress on the power components during an overload. A skip-cycle mode reduces power consumption at light loads for energy conservation applications (ENERGY STAR?, CEPCP, and so forth). The LM5023 also uses the transformer auxiliary winding for output overvoltage protection (OVP); if an OVP fault is detected the LM5023 latches off the controller.

Features

Applications

• AC/DC Adaptors/Chargers for E-books
• Adaptors for Portable Media Player
• Adaptors for DSCs
• Set-top boxes
• DVD players
• Records
• Linear Adapter Replacements
• Chargers for cell/cordless phones
• PDAs
• MP3