NTE NTE1911 Datasheet
NTE1911
3 Terminal Adjustable Negative Voltage Regulator
–1.2V to –37V, 1.5A
Description:
The NTE1911 is an adjustable 3–terminal negative voltage regulator capable of supplying in excess
of 1.5A over an output voltage range of –1.2V to 37V. This regulator is exceptionally easy to apply,
requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients.
Further, if features internal current limiting, thermal shutdown and safe–area compensation, making
the, virtually blowout–proof against overloads.
The NTE1911 serves a wide variety of applications including local on–card regulation, programmable–output voltage regulation or precision current regulation.
Features:
D Output Voltage Adjustable from –1.2V to –37V
D 1.5A Output Current Guaranteed, –55°C to +150°C
D Line Regulation Typically 0.01%/V
D Load Regulation Typically 0.3%
D Excellent Thermal Regulation, 0.002%/W
D 77dB Ripple Rejection
D Excellent Rejection of Thermal Transients
D 50ppm/°C Temperature Coefficient
D Temperature–Independent Current Limit
D Internal Thermal Overload Protection
Absolute Maximum Ratings:
Power Dissipation, P
Input–Output Voltage Differential, V
D
I–O
Operating Junction Temperature Range, T
Storage Temperature Range, T
Lead Temperature (Soldering, 10 sec), T
Electrical Characteristics:
Parameter Symbol Test Conditions Min Typ Max Unit
Line Regulation Reg
stg
(Note 1)
lineTA
L
= +25°C, 3V ≤ VI – VO ≤ 40V, Note 2 – 0.01 0.04 %/V
3V ≤ VI – VO ≤ 40V, Note 2 – 0.02 0.07 %/V
J
0° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Unless otherwise noted, these specifications apply: 0° ≤ TJ ≤ +125°C, (VI –VO) = 5V,
P
= 20W, and I
max
MAX
= 1.5A.
Note 2. Load and line regulation are specified at constant junction temperature. Pulse testing with
a low duty cycle is used. Change in V
because of heating effects is covered under the Ther-
O
mal Regulation specification.
Electrical Characteristics (Cont’d): (Note 1)
Parameter Symbol Test Conditions Min Typ Max Unit
Load Regulation Reg
Thermal Regulation Reg
Adjustment Pin Current I
Adjustment Pin Current
∆I
Change
Reference Voltage V
load
thermTA
Adj
Adj
ref
VO ≤ 5V,
Note 2
VO ≥ 5V,
Note 2
= +25°C, Pulse = 10ms – 0.003 0.04 %VO/W
TA = +25°C, 10mA ≤ IL ≤ 1.5A,
2.5V ≤ (V
10mA ≤ IO ≤ 1.5A, 3V ≤ (VI – VO) ≤ 40V,
P ≤ 20W, T
10mA ≤ IO ≤ 1.5A, 3V ≤ (VI – VO) ≤ 40V,
TA = +25°C, 10mA ≤ IO ≤ 1.5A – 15 50 mV
10mA ≤ IO ≤ 3A – 20 70 mV
TA = +25°C, 10mA ≤ IO ≤ 1.5A – 0.3 1.0
10mA ≤ IO ≤ 3A – 0.3 1.5 %
– 65 100 µA
– 0.2 5.0 µA
– VO) ≤ 40V, P ≤ 20W
I
1.20 1.25 1.30 V
= +25°C, Note 3
A
1.213 1.250 1.287 V
%
P ≤ 20W, Note 3
Temperature Stability T
Minimum Load Current I
Lmin
0° ≤ TJ ≤ +125°C – 0.6 – %V
S
VI – VO ≤ 10V – 1.5 6.0 mA
O
VI – VO ≤ 40V – 2.5 10 mA
Maximum Output Current
I
max
Limit
RMS Noise, % of V
O
N TA = +25°C, 10Hz ≤ f ≤ 10kHz – 0.003 – %V
Ripple Rejection Ratio RR VO = 10V, f = 120Hz, C
VI – VO ≤ 15V, P ≤ 20W 1.5 2.2 – A
VI – VO ≤ 40V, P ≤ 20W, TA = +25°C 0.15 0.4 – A
= 0 – 60 – dB
Adj
VO = 10V, f = 120Hz, C
= 10µF 66 77 – dB
Adj
O
Long Term Stability S TA = +125°C, 1000 Hours – 0.3 1.0 %/1.0k
Note 1. Unless otherwise noted, these specifications apply: 0° ≤ TJ ≤ +125°C, (VI –VO) = 5V,
P
= 20W, and I
max
MAX
= 1.5A.
Note 2. Load and line regulation are specified at constant junction temperature. Pulse testing with
a low duty cycle is used. Change in V
because of heating effects is covered under the Ther-
O
mal Regulation specification.
Note 3. C
, when used, is connected between the adjustment pin and GND.
Adj
.135 (3.45) Max
.350 (8.89)
.215 (5.45)
.430
(10.92)
V
OUT
Adjust
.875 (22.2)
Dia Max
Seating Plane
.040 (1.02).312 (7.93) Min
1.187 (30.16)
.665
(16.9)
.188 (4.8) R Max
.156 (3.96) Dia
(2 Holes)
.525 (13.35) R Max
VIN/Case
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