NTE NTE951, NTE977 Datasheet

NTE950/NTE951/NTE977

Integrated Circuit

Positive 3 Terminal Voltage Regulator, 100mA

Description:

The NTE950, NTE951, and NTE977 are positive 3–terminal voltage regulators in available in a TO92
type package. With adequate heat sinking these regulators can deliver 100mA output current. Cur­rent limiting is included to limit peak output current to safe value. Safe area protection for the output
transistors is provided to limit internal power dissipation. If internal power dissipation becomes too
high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from
overheating.

When used as a zener diode/resistor combination replacement, these devices usually result in an ef­fective output impedance improvement of two orders of magnitude, and lower quiescent current.
These regulators can provide local on card regulation, eliminating the distribution problems
associated with single point regulation. T ypical applications include use in logic systems, instrumen­tation, HiFi, and other solid state electronic equipment. Although designed primarily as fixed voltage
regulators these devices can be used with external components to obtain adjustment voltages and
currents.

Features:

D Output Voltage Tolerances of ±5% over the Temperature Range
D Output Current of 100mA
D Internal Thermal Overload Protection
D Output Transistor Safe Area Protection
D Internal Short Circuit Current Limit

Absolute Maximum Ratings:

Output Voltage, V

OUT

NTE977 5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTE950 12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTE951 15V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Voltage, V

IN

NTE977 30V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NTE950, NTE951 35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Internal Power Dissipation (Note 1), P
Operating Temperature Range, T
Maximum Junction Temperature, T
Storage Temperature Range, T

stg

D

opr

J

Lead Temperature (Soldering, 10 sec), T

L

Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0°C to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55°C to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note 1. Thermal resistance is typically +60°C/W junction to case, +232°C/W junction to ambient, and

+88⁄C/W junction to ambient at 400ft min of air. The maximum junction temperature shall
not exceed +125°C on Electrical parameters.

Electrical Characteristics: (TJ = 0° to +125°C, IO = 40mA, CIN = 0.33µF, CO = 0.1µF, Note 2

unless otherwise specified)

NTE Type Number NTE977 NTE950 NTE951

Input Voltage (unless otherwise specified) VIN = 10V VIN = 19V VIN = 23V

Parameter Symbol Test Conditions Min Typ Max Min Typ Max Min Typ Max Unit

Output Voltage

V

(Note 4)

Line Regulation ∆V

Load Regulation ∆V

Long Term Stability ∆V

Quiescent Current I

Quiescent Current

∆I

Change

TJ = +25°C 4.8 5.0 5.2 11.5 12.0 12.5 14.4 15.0 15.6 V

O

1mA ≤ IO ≤ 70mA 4.75 – 5.25 11.4 – 12.6 14.25 – 15.75 V
1mA ≤ IO ≤ 70mA 4.75 – 5.25 11.4 – 12.6 14.25 – 15.75 V
V

≤ VIN ≤ V

MIN

TJ = +25°C – 10 54 – 20 110 – 25 140 mV

O

MAX

(7 ≤ VIN ≤ 20) (14.5 ≤ VIN ≤ 27) (17.5 ≤ VIN ≤ 30)

(8 ≤ VIN ≤ 20) (16 ≤ VIN ≤ 27) (20 ≤ VIN ≤ 30) V

– 18 75 – 30 180 – 37 250 mV

(7 ≤ VIN ≤ 20) (14.5 ≤ VIN ≤ 27) (17.5 ≤ VIN ≤ 30) V

TJ = +25°C,

O

1mA ≤ I

≤ 40mA

O

TJ = +25°C,
1mA ≤ I

O

TJ = +25°C – 3 5 – 3 5 – 3.1 5 mA

Q

≤ 100mA

O

– 5 30 – 10 50 – 12 75 mV

– 20 60 – 30 100 – 35 150 mV

– 12 – – 24 – – 30 –

TJ = +125°C – – 4.7 – – 4.7 – – 4.7 mA
1mA ≤ IO ≤ 40mA – – 0.1 – – 0.1 – – 0.1 mA

Q

V

≤ VIN ≤ V

MIN

MAX

– – 1.0 – – 1.0 – – 1.0 mA

(8 ≤ VIN ≤ 20) (16 ≤ VIN ≤ 27) (20 ≤ VIN ≤ 30) V

mV

1000Hrs

Output Noise

Voltage

Ripple Rejection

Input Voltage

∆V

∆V

V

OUT

TJ = +25°C, Note 3,

n

– 40 – – 80 – – 90 – µV

f = 10Hz to 10kHz
f = 120Hz 47 62 – 40 54 – 37 51 – dB

IN

IN

(8 ≤ VIN ≤ 16) (15 ≤ VIN ≤ 25) (18.5 ≤ VIN ≤ 28.5) V

TJ = +25°C 7 – – 14.5 – – 17.5 – – V
Required to
Maintain Line
Regulation

Note 2. The maximum steady state usable output current and input voltage are very dependent on

the heat sinking and/or lead length of the package. The data above represent pulse test
conditions with junction temperatures as indicated at the initiation of test.

Note 3. Recommended minimum load capacitance of 0.01µF to limit high frequency noise band-

width.

Note 4. The temperature coefficient of V

is typically within ±0.01% VO/°C.

OUT