NTE7166 Datasheet, PDF (1/3 Pages) NTE Electronics – Integrated Circuit Flyback Switching Regulator

NTE7166
Integrated Circuit
Flyback Switching Regulator
Description:
The NTE7166 is an integrated circuit in a 5 - Lead Staggered TO3P type package and is specifically
designed to satisfy the requirements for increased integration and reliability in off - line quasi- resonant
flyback converters. This device incorporates a primary control and drive circuit with discrete ava-
lanche - rated power MOSFETs.
Cycle - by - cycle current limiting, under - voltage lockout with hysteresis, over - voltage protection, and
thermal shutdown protects the power supply during th normal overload an fault conditions. Over -
voltge protection and thermal shutdown are latched after a short delay. The latch may be reset by cycl-
ing the input supply. Low - current startup and a low - power standby mode selected from the secon-
dary circuit completes a comprehensive suite of features.
Features:
D Flyback Operation with Quasi - Resonant Soft Switching for Low Power Dissipation and EMI
D Rugged Avalanche - Rated MOSFET
D Full Over - Current Protection (No Blanking)
D Under - Voltage Lockout with Hysteresis
D Over - Voltage Protection
D Direct Voltage Feedback
D Low Start - Up Current
D Low - Frequency, Low - Power Standby Operation
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Control Supply Voltage, V_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V
Drain - Source Voltage, V_DS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450V
Drain Switching Current, I_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16A
Peak Drain Current, I_DM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26A
Avalanche Energy, E_AS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327mJ
OCP/FB Voltage Range, V_OCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3V to +6V
Power Dissipation (V_IN x I_IN(ON)), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8W
FET Channel Temperature, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Internal Case Temperature, T_C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C
Operating Temperature Range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 20° to +125°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 40° to +125°C
Thermal Resistance, Junction - to - Case, R_thJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.75°C/W