NTE7109 データシートの表示（PDF） - NTE Electronics

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NTE7109

Integrated Circuit Switching Regulator Control

NTE Electronics 

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

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