NSC LM2930T-8.0, LM2930SX-8.0, LM2930S-8.0, LM2930S-5.0, LM2930-8.0MWC Datasheet
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LM2930
3-Terminal Positive Regulator
General Description
The LM2930 3-terminal positive regulator features an ability
to source 150 mA of output current with an input-output differential of 0.6V or less. Efficient use of low input voltages
obtained, for example, from an automotive battery during
cold crank conditions, allows 5V circuitry to be properly powered with supply voltages as low as 5.6V. Familiar regulator
features such as current limit and thermal overload protection are also provided.
Designed originally for automotive applications, the LM2930
and all regulated circuitry are protected from reverse battery
installations or 2 battery jumps. During line transients, such
as a load dump (40V) when the input voltage to the regulator
can momentarily exceed the specified maximum operating
voltage, the regulator will automatically shut down to protect
both internal circuits and the load. The LM2930 cannot be
harmed by temporary mirror-image insertion.
Fixed outputs of 5V and 8V are available in the plastic
TO-220 and TO-263 power packages.
Features
n Input-output differential less than 0.6V
n Output current in excess of 150 mA
n Reverse battery protection
n 40V load dump protection
n Internal short circuit current limit
n Internal thermal overload protection
n Mirror-image insertion protection
n P
+
Product Enhancement tested
Voltage Range
LM2930T-5.0: 5V
LM2930T-8.0: 8V
LM2930S-5.0: 5V
LM2930S-8.0: 8V
Connection Diagrams
(TO-220)
Plastic Package
DS005539-1
Front View
Order Number LM2930T-5.0 or LM2930T-8.0
See NS Package Number T03B
(TO-263)
Plastic Surface-Mount Package
DS005539-7
Top View
DS005539-8
Side View
Order Number LM2930S-5.0 or LM2930S-8.0
See NS Package Number TS3B
April 1998
LM2930 3-Terminal Positive Regulator
© 1998 National Semiconductor Corporation DS005539 www.national.com
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
Operating Range 26V
Overvoltage Protection 40V
Reverse Voltage (100 ms) −12V
Reverse Voltage (DC) −6V
Internal Power Dissipation (Note 2) Internally Limited
Operating Temperature Range −40˚C to +85˚C
Maximum Junction Temperature 125˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temp. (Soldering, 10 seconds) 230˚C
Electrical Characteristics (Note 3)
LM2930-5.0 V
IN
=
14V, I
O
=
150 mA, T
j
=
25˚C (Note 6), C2=10 µF, unless otherwise specified
Tested Design
Parameter Conditions Typ Limit Limit Unit
(Note 4) (Note 5)
Output Voltage 5 5.3 V
MAX
4.7 V
MIN
6V≤VIN≤26V, 5 mA≤IO≤150 mA 5.5 V
MAX
−40˚C≤TJ≤125˚C 4.5 V
MIN
Line Regulation 9V≤VIN≤16V, I
O
=
5 mA 7 25 mV
MAX
6V≤VIN≤26V, I
O
=
5mA 30 80 mV
MAX
Load Regulation 5 mA≤IO≤150 mA 14 50 mV
MAX
Output Impedance 100 mADC&10mA
rms
, 100 Hz−10 kHz 200 mΩ
Quiescent Current I
O
=
10 mA 4 7 mA
MAX
I
O
=
150 mA 18 40 mA
MAX
Output Noise Voltage 10 Hz−100 kHz 140 µV
rms
Long Term Stability 20 mV/1000 hr
Ripple Rejection f
O
=
120 Hz 56 dB
Current Limit 400 700 mA
MAX
150 mA
MIN
Dropout Voltage I
O
=
150 mA 0.32 0.6 V
MAX
Output Voltage Under −12V≤VIN≤40V, R
L
=
100Ω 5.5 V
MAX
Transient Conditions −0.3 V
MIN
Electrical Characteristics (Note 3)
LM2930-8.0 (V
IN
=
14V, I
O
=
150 mA, T
j
=
25˚C (Note 6), C2=10 µF, unless otherwise specified)
Tested Design
Parameter Conditions Typ Limit Limit Unit
(Note 4) (Note 5)
Output Voltage 8 8.5 V
MAX
7.5 V
MIN
9.4V≤VIN≤26V, 5 mA≤IO≤150 mA, 8.8 V
MAX
−40˚C≤TJ≤125˚C 7.2 V
MIN
Line Regulation 9.4V≤VIN≤16V, I
O
=
5mA 12 50 mV
MAX
9.4V≤VIN≤26V, I
O
=
5 mA 50 100 mV
MAX
Load Regulation 5 mA≤IO≤150 mA 25 50 mV
MAX
Output Impedance 100 mADC&10mA
rms
, 100 Hz−10 kHz 300 mΩ
Quiescent Current I
O
=
10 mA 4 7 mA
MAX
I
O
=
150 mA 18 40 mA
MAX
Output Noise Voltage 10 Hz−100 kHz 170 µV
rms
Long Term Stability 30 mV/1000 hr
Ripple Rejection f
O
=
120 Hz 52 dB
www.national.com 2
Electrical Characteristics (Note 3) (Continued)
LM2930-8.0 (V
IN
=
14V, I
O
=
150 mA, T
j
=
25˚C (Note 6), C2=10 µF, unless otherwise specified)
Tested Design
Parameter Conditions Typ Limit Limit Unit
(Note 4) (Note 5)
Current Limit 400 700 mA
MAX
150 mA
MIN
Dropout Voltage I
O
=
150 mA 0.32 0.6 V
MAX
Output Voltage Under −12V≤VIN≤40V, R
L
=
100Ω 8.8 V
MAX
Transient Conditions −0.3 V
MIN
Note 1: Absolute Maximum Ratings indicate limits beyond which damage tothedevicemayoccur. Operating ratings indicate conditions for which the deviceisfunctional, butdonotguarantee specific performance limits. Electrical Characteristics state DC andAC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
Note 2: Thermal resistance without a heat sink for junction to case temperature is 3˚C/W and for case to ambient temperature is 50˚C/W for the TO-220, 73˚C/W
for the TO-263. If the TO-263 package is used, the thermal resistance can be reduced by increasing the P.C.board copper area thermally connected to the package.
Using 0.5 square inches of copper area, θ
JA
is 50˚C/W; with 1 square inch of copper area, θJAis 37˚C/W; and with 1.6 or more square inches of copper area, θ
JA
is 32˚C/W.
Note 3: All characteristics are measured with a capacitor across the input of 0.1 µF and a capacitor across the output of 10 µF.All characteristics except noise voltage
and ripple rejection ratio are measured using pulse techniques (t
W
≤10 ms, duty cycle≤5%). Output voltage changes due to changes in internal temperature must be
taken into account separately.
Note 4: Guaranteed and 100%production tested.
Note 5: Guaranteed (but not 100%production tested) over the operating temperature and input current ranges. These limits are not used to calculate outgoing qual-
ity levels.
Note 6: To ensure constant junction temperature, low duty cycle pulse testing is used.
Typical Application
Typical Performance Characteristics
DS005539-5
*Required if regulator is located far from power supply filter.
*
*
C
OUT
must be at least 10 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to the
regulator. This capacitor must be rated over the same operating temperature range as the regulator. The equivalent series resistance (ESR) of this capacitor
should be less than 1Ω over the expected operating temperature range.
Output Impedance
DS005539-11
Overvoltage Supply Current
DS005539-12
Reverse Supply Current
DS005539-13
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