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NTE958 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit 3-Terminal Positive Voltage Regulator, 18V | |||
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NTE958
Integrated Circuit
3âTerminal Positive Voltage Regulator, 18V
The NTE958 fixedâvoltage regulator is a monolithic integrated circuit in a TO220 type package de-
signed for use in a wide variety of applications including local, onâcard regulation. This regulator em-
ploys internal current limiting, thermal shutdown, and safeâarea 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 ShortâCircuit Current Limiting
D Output Transistor SafeâArea Compensation
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Vdc
Power Dissipation (TA = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Derate above +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.4mW/°C
Power Dissipation (TC = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Derate above +75°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mW/°C
Thermal Resistance, JunctionâtoâAmbient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C/W
Thermal Resistance, JunctionâtoâCase, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W
Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â55° to +150°C
Storage Junction Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â65° to +150°C
Electrical Characteristics: (Vin = 27V, IO = 500mA, TJ = 0° to +125°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Voltage
Line Regulation
VO TJ = +25°C
17.3 18.0 18.7 V
5mA ⤠IO ⤠1A, PO ⤠15W, 21V ⤠Vin ⤠33V 17.1 18.0 18.9 V
Regline TJ = +25°C, Note 1 21V ⤠Vin ⤠33V
â 25 360 mV
24V ⤠Vin ⤠30V
â 10 180 mV
Load Regulation
Regload TJ = +25°C, Note 1 5mA ⤠IO ⤠1.5A
â
250mA ⤠IO ⤠750mA â
55 360 mV
22 180 mV
Note 1. Load and line regulation are specified at constant junction temperature. Changes in VO due
to heating effects must be taken into account separately. Pulse testing with low duty cycle
is used.
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