NTE972 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit 3-Terminal Positive Voltage Regulator, 24V

NTE972
Integrated Circuit
3–Terminal Positive Voltage Regulator, 24V
The NTE972 fixed–voltage regulator is a monolithic integrated circuit in a TO220 type package de-
signed for use in a wide variety of applications including local, on–card regulation. This regulator em-
ploys internal current limiting, thermal shutdown, and safe–area compensation. With adequate heat-
sinking it can deliver output currents in excess of 1.0 ampere. Although designed primarily as a fixed
voltage regulator, this device can be used with external components to obtain adjustable voltages and
currents.
Features:
D Output Current in Excess of 1.0 Ampere
D No External Components Reguired
D Internal Thermal Overload Protection
D Internal Short–Circuit Current Limiting
D Output Transistor Safe–Area Compensation
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Input Voltage, V_in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Vdc
Power Dissipation (T_A = +25°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Derate above +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.4mW/°C
Power Dissipation (T_C = +25°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Derate above +75°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mW/°C
Thermal Resistance, Junction–to–Ambient, R_thJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C/W
Thermal Resistance, Junction–to–Case, R_thJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W
Operating Junction Temperature Range, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Storage Junction Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Electrical Characteristics: (V_in = 33V, I_O = 500mA, T_J = 0° to +125°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Voltage
Line Regulation
V_O T_J = +25°C
23 24 25 V
5mA ≤ I_O ≤ 1A, P_O ≤ 15W, 27V ≤ V_in ≤ 38V 22.8 24.0 25.2 V
Reg_line T_J = +25°C, Note 1 27V ≤ V_in ≤ 38V
– 31 480 mV
30V ≤ V_in ≤ 36V
– 14 240 mV
Load Regulation
Reg_load T_J = +25°C, Note 1 5mA ≤ I_O ≤ 1.5A
–
250mA ≤ I_O ≤ 750mA –
60 480 mV
25 240 mV
Note 1. Load and line regulation are specified at constant junction temperature. Changes in V_O due
to heating effects must be taken into account separately. Pulse testing with low duty cycle
is used.