NTE NTE1909 Datasheet
NTE1909
Integrated Circuit
Negative 3 Terminal Voltage Regulator,
–24V, 100mA
Description:
The NTE1909 is a negative 3–terminal voltage regulator in a TO92 type package suitable for numerous
applications requiring up to 100mA. This device features thermal shutdown and current limiting making
the NTE1909 remarkably rugged. In most applications, no external components are required f or operation.
The NTE1909 is useful for on–card regulation or any other application where a regulated negative
voltage at a modest current level is needed. This device of fers a substantial advantage over the common resistor/zener diode approach.
Features:
D Internal Short–Circuit Current Limiting
D Internal Thermal Overload Protection
D No External Components Required
Absolute Maximum Ratings:
Input Voltage, V
Internal Power Dissipation (Note 1), P
Operating Junction Temperature Range, T
Maximum Junction Temperature, T
Storage Temperature Range, T
I
D
opr
J
stg
Lead Temperature (During Soldering, 10sec), T
Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L
–40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Thermal resistance, junction–to–ambient is 180°C/W when mounted with 0.4” leads on a PC
board and 160°C/W when mounted with .250” leads on a PC board.
Electrical Characteristics:
(VI = –33V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0° ≤ TJ ≤ +125°C,
Note 2 unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage V
Line Regulation Reg
TJ = +25°C –23.0 –24.0 –25.0 V
O
–38V ≤ VI ≤ –27V, 1mA ≤ IO ≤ 100mA –22.8 –24.0 –25.2 V
lineTJ
= +25°C, –38V ≤ VI ≤ –27V – – 350 mV
Electrical Characteristics (Cont’d): (VI = –33V, IO = 40mA, CI = 0.33µF, CO = 0.1µF,
0° ≤ T
Parameter Symbol Test Conditions Min Typ Max Unit
≤ +125°C, Note 2 unless otherwise specified)
J
Load Regulation Reg
Quiescent Current I
Quiescent Current Change
Output Noise Voltage V
Ripple Rejection RR –35V ≤ VI ≤ –29V, f = 120Hz 31 47 – dB
Dropout Voltage V
loadTJ
B
∆I
B
n
DO
= +25°C, 1mA ≤ IO ≤ 100mA – – 200 mV
TJ = +125°C – – 6 mA
With line, –38V ≤ VI ≤ –28V – – 1.5 mA
With load, 1mA ≤ IO ≤ 40mA – – 0.1 mA
TJ = +25°C, f = 10Hz to 10kHz – 200 – µV
TJ = +25°C, IO = 40mA – 1.7 – V
Note 2. To ensure constant junction temperature, low duty cycle pulse testing is used.
.135 (3.45) Min
.210
(5.33)
Seating Plane
Max
.500
(12.7)
Min
.100 (2.54)
.105 (2.67) Max
.205 (5.2) Max
GND
V
IN
V
OUT
.021 (.445) Dia Max
.050 (1.27)
.165 (4.2) Max
.105 (2.67) Max
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