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LM2990J-12-QML PDF даташит

Спецификация LM2990J-12-QML изготовлена ​​​​«National Semiconductor» и имеет функцию, называемую «Negative Low Dropout Regulator».

Детали детали

Номер произв LM2990J-12-QML
Описание Negative Low Dropout Regulator
Производители National Semiconductor
логотип National Semiconductor логотип 

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LM2990J-12-QML Даташит, Описание, Даташиты
June 1999
LM2990
Negative Low Dropout Regulator
General Description
The LM2990 is a three-terminal, low dropout, 1 ampere
negative voltage regulator available with fixed output volt-
ages of −5, −5.2, −12, and −15V.
The LM2990 uses new circuit design techniques to provide
low dropout and low quiescent current. The dropout voltage
at 1A load current is typically 0.6V and a guaranteed
worst-case maximum of 1V over the entire operating tem-
perature range. The quiescent current is typically 1 mA with
1A load current and an input-output voltage differential
greater than 3V. A unique circuit design of the internal bias
supply limits the quiescent current to only 9 mA (typical)
when the regulator is in the dropout mode (VOUT − VIN 3V).
Output voltage accuracy is guaranteed to ±5% over load,
and temperature extremes.
The LM2990 is short-circuit proof, and thermal shutdown in-
cludes hysteresis to enhance the reliability of the device
when overloaded for an extended period of time. The
LM2990 is available in a 3-lead TO-220 package and is rated
for operation over the automotive temperature range of
−40˚C to +125˚C.
Features
n 5% output accuracy over entire operating range
n Output current in excess of 1A
n Dropout voltage typically 0.6V at 1A load
n Low quiescent current
n Internal short circuit current limit
n Internal thermal shutdown with hysteresis
n Functional complement to the LM2940 series
Applications
n Post switcher regulator
n Local, on-card, regulation
n Battery operated equipment
Typical Application
DS010801-1
*Required if the regulator is located further than 6 inches from the power supply filter capacitors. A 1 µF solid tantalum or a 10 µF aluminum electrolytic
capacitor is recommended.
**Required for stability. Must be at least a 10 µF aluminum electrolytic or a 1 µF solid tantalum to maintain stability. May be increased without bound to
maintain regulation during transients. Locate the capacitor as close as possible to the regulator. The equivalent series resistance (ESR) is critical, and
should be less than 10over the same operating temperature range as the regulator.
Ordering Information and Connection Diagrams
Temperature
Range
−40˚C to
+125˚C
−55˚C to
+125˚C
-5.0
LM2990T-5.0
LM2990S-5.0
LM2990J-5.0-QML
5962-9571101QEA
LM2990WG5.0-QML
5962-9571101QXA
Output Voltage
-5.2 -12
LM2990T-5.2
LM2990T-12
LM2990S-12
LM2990J-12-QML
5962-9571001QEA
-15
LM2990T-15
LM2990S-15
LM2990J-15-QML
5962-9570901QEA
Package
TO-220
TO-263
J16A
WG16A
© 1999 National Semiconductor Corporation DS010801
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LM2990J-12-QML Даташит, Описание, Даташиты
Ordering Information and
Connection Diagrams (Continued)
3-Lead TO-220
DS010801-2
Front View
Order Number LM2990T-5.0, LM2990T-5.2, LM2990T-12
or LM2990T-15
See NS Package Number T03B
16-Lead Ceramic Dual-in-Line Package
TO-263 Surface-Mount Package
Top View
DS010801-11
DS010801-12
Side View
Order Number LM2990S-5.0, LM2990S-12 or
LM2990S-15
See NS Package Number TS3B
16-Lead Ceramic Surface Mount Package
DS010801-33
Top View
Order Number
LM2990J-5.0-QML (5962-9571101QEA),
LM2990J-12-QML (5962-9571001QEA), or
LM2990J-15-QML (5962-9570901QEA),
See NS Package Number J16A
DS010801-34
Top View
Order Number
LM2990WG5.0-QML (5962-9571101QXEA)
See NS Package Number WG16A
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LM2990J-12-QML Даташит, Описание, Даташиты
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
ESD Susceptibility (Note 2)
Power Dissipation (Note 3)
Junction Temperature (TJmax)
−26V to +0.3V
2 kV
Internally Limited
125˚C
Storage Temperature
Lead Temperature
(Soldering, 10 sec.)
Operating Ratings(Note 1)
Junction Temperature Range (TJ)
Maximum Input Voltage (Operational)
−65˚C to +150˚C
260˚C
−40˚C to +125˚C
−26V
Electrical Characteristics
VIN = −5V + VO(NOM) (Note 6) , IO = 1A, CO = 47 µF, unless otherwise specified. Boldface limits apply over the entire operat-
ing temperature range, −40˚C TJ 125˚C, all other limits apply for TJ = 25˚C.
Parameter
Conditions
LM2990-5.0
Typ Limit
LM2990-5.2
Typ Limit
Units
(Limit)
(Note 4)
(Note 5)
(Note 4)
(Note 5)
Output Voltage (VO)
5 mA IO 1A
−4.90
−5.10
−5.10
−5.30
V (max)
mV (min)
−5 −5.2
V
5 mA IO 1A
−4.75
−5.25
−4.94
−5.46
V (max)
V (min)
Line Regulation
IO = 5 mA,
4 40 4 40 mV (max)
VO(NOM) −1V > VIN > −26V
Load Regulation
50 mA IO 1A
1 40 1 40 mV (max)
Dropout Voltage
IO = 0.1A, VO 100 mV
0.1 0.3 0.1 0.3 V (max)
IO = 1A, VO 100 mV
0.6 1 0.6 1 V (max)
Quiescent Current (Iq)
IO 1A
1 5 1 5 mA (max)
IO = 1A, VIN = VO(NOM)
9 50 9 50 mA (max)
Short Circuit Current
RL = 1(Note 7)
1.8 1.5 1.8 1.5 A (min)
Maximum Output Current (Note 7)
1.8 1.5 1.8 1.5 A (min)
Ripple Rejection
Vripple = 1 Vrms,
58 50 58 50 dB (min)
ƒripple = 1 kHz, IO = 5 mA
Output Noise Voltage
10 Hz–100 kHz, IO = 5 mA
250
750
250
750 µV (max)
Long Term Stability
1000 Hours
2000
2000
ppm
Electrical Characteristics
VIN
ing
= −5V + VO(NOM) (Note 6) ,
temperature range, −40˚C
IO
TJ
=
1A, CO
125˚C,
= 47 µF, unless otherwise
all other limits apply for TJ
specified.
= 25˚C.
Boldface
limits
apply
over
the
entire
operat-
Parameter
Conditions
LM2990-12
Typ Limit
LM2990-15
Typ Limit
Units
(Limit)
(Note 4)
(Note 5)
(Note 4)
(Note 5)
Output Voltage (VO)
5 mA IO 1A
−11.76
−12.24
−14.70
−15.30
V (max)
V (min)
−12 −15
V
5 mA IO 1A
−11.40
−12.60
−14.25
−15.75
V (max)
V (min)
Line Regulation
IO = 5 mA,
6 60 6 60 mV (max)
VO(NOM) −1V > VIN > −26V
Load Regulation
50 mA IO 1A
3 50 3 50 mV (max)
Dropout Voltage
IO = 0.1A, VO 100 mV
0.1 0.3 0.1 0.3 V (max)
IO = 1A, VO 100 mV
0.6 1 0.6 1 V (max)
Quiescent Current (Iq)
IO 1A
1 5 1 5 mA (max)
IO = 1A, VIN = VO(NOM)
9 50 9 50 mA (max)
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Номер в каталогеОписаниеПроизводители
LM2990J-12-QMLNegative Low Dropout RegulatorNational Semiconductor
National Semiconductor

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