NTE7109 Datasheet, PDF (1/5 Pages) NTE Electronics – Integrated Circuit Switching Regulator Control

NTE7109
Integrated Circuit
Switching Regulator Control
Description:
The NTE7109 is a primary switching regulator controller in a 16–Lead DIP type package designed
to get the regulated DC voltage from an AC power supply. This device can directly drive a MOSFET
with fast rise and fall output pulses.
The NTE7109 contains not only a high frequency OSC and fast output drive, but also a current limiter
with fast response and high sensibility so a true “fast switching regulator” can be realized. By adding
additional compenents to the primary side, a timer–type protection circuit can be made for protection
against short–circuit and overcurrent.
Features:
D 500kHz Operation to MOSFET
• Output Current: ±2A
• Output Rise Time: 60ns; Fall Time: 40ns
• Modified Totem–Pole Output Method with Low Through Current
D Compact and Light–Weight Power Supply
• Low Start–Up Current: 90µA Typ.
• Wide Range Between “Start–Up Voltage” and “Stop Voltage” make the Power Input Smooting
Capacitor Low; Start–Up Threshold Voltage: 16V; Stop Voltage: 10V
• High Power Dissipation Package withstands the Heat Generated bt the Gate–Drive Current
of a MOSFET
D Simplified Peripheral Circuit with Protection Circuit and Built–In Large–Capacity Totem–Pole
Output
• High–Speed Current Limiting Circuit using Pulse–by–Pulse Method (Two Systems of
CLM+pin, CLM–pin)
• Protection by Intermittent Operation of Output Overcurrent: Timer Protection Circuit
• Overvoltage Protection Circuit with an Externally Resettable Latch (OVP)
• Protection Circuit for Output Miss Action at Low Supply Voltage (UVLO)
D High–Performance and Highly Functional Power Supply
• Triangular Wave Oscillator for Easy Dead Time Setting
Applications:
D Feed Forward Regulator
D Flyback Regulator