LM2931, NCV2931 Series
100 mA, Adjustable Output,
LDO Voltage Regulator with
60 V Load Dump Protection
The LM2931 series consists of positive fixed and adjustable output
voltage regulators that are specifically designed to maintain proper
regulation with an extremely low input−to−output voltage differential.
These devices are capable of supplying output currents in excess of
100 mA and feature a low bias current of 0.4 mA at 10 mA output.
Designed primarily to survive in the harsh automotive environment,
these devices will protect all external load circuitry from input fault
conditions caused by reverse battery connection, two battery jump
starts, and excessive line transients during load dump. This series also
includes internal current limiting, thermal shutdown, and additionally,
is able to withstand temporary power−up with mirror−image insertion.
Due to the low dropout voltage and bias current specifications, the
LM2931 series is ideally suited for battery powered industrial and
consumer equipment where an extension of useful battery life is
desirable. The ‘C’ suffix adjustable output regulators feature an output
inhibit pin which is extremely useful in microprocessor−based systems.
Features
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FIXED OUTPUT VOLTAGE
TO−92
Z SUFFIX
CASE 29
TO−220
T SUFFIX
CASE 221AB
DPAK
DT SUFFIX
CASE 369C
D
2
PAK
D2T SUFFIX
CASE 936
SOT−223
ST SUFFIX
CASE 318H
Pin 1. Output
2. Ground
3. Input
1
2
3
1
2
3
1
3
Pin 1. Input
2. Ground
3. Output
•
•
•
•
•
•
•
•
•
•
•
•
•
Input−to−Output Voltage Differential of < 0.6 V @ 100 mA
Output Current in Excess of 100 mA
Low Bias Current
60 V Load Dump Protection
−50
V Reverse Transient Protection
Internal Current Limiting with Thermal Shutdown
Temporary Mirror−Image Protection
Ideally Suited for Battery Powered Equipment
Economical 5−Lead TO−220 Package with Two Optional Leadforms
Available in Surface Mount SOP−8, D
2
PAK and DPAK Packages
High Accuracy (
±
2.5%) Reference (LM2931AC) Available
Pb−Free Packages are Available
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
1
3
1
3
ADJUSTABLE OUTPUT VOLTAGE
TO−220
TH SUFFIX
CASE 314A
TO−220
1
TV SUFFIX
CASE 314B
TO−220
T SUFFIX
CASE 314D
1
5
5
Applications
•
Battery Powered Consumer Products
•
Hand−held Instruments
•
Camcorders and Cameras
SOIC−8
D SUFFIX
CASE 751
FIXED
N.C.
GND
Input
8
1
5
4
N.C.
GND
Output
Output
Inhibit
GND
Input
8
1
8
1
1
5
Pin 1. Adjust
2. Output
Inhibit
3. Ground
4. Input
5. Output
D
2
PAK
D2T SUFFIX
1
CASE 936A
5
ADJUSTABLE
5
4
Adjust
GND
Output
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
DEVICE MARKING INFORMATION
See general marking and heatsink information in the device
marking section on page 15 of this data sheet.
(Top View)
(Top View)
©
Semiconductor Components Industries, LLC, 2011
December, 2011
−
Rev. 25
1
Publication Order Number:
LM2931/D
LM2931, NCV2931 Series
Representative Schematic Diagram
Input
6.0
6.0 k
350
500
Output
30 k
30 k *
3.94 k
Adjust
3.0 k
EPI
Bias
30 k
30 k
6.8 V
Output
Inhibit
50 k
48 k
180 k
184 k
5.8 V
92.8 k *
11.5 k
Ground
*Deleted on Adjustable Regulators
This device contains 26 active transistors.
35 k
10 k
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2
LM2931, NCV2931 Series
MAXIMUM RATINGS
Rating
Input Voltage Continuous
Transient Input Voltage (t
≤
100 ms)
Transient Reverse Polarity Input Voltage
1.0% Duty Cycle,
t
≤
100 ms
Electrostatic Discharge Sensitivity (ESD)
Human Body Model (HBM) Class 2, JESD22 A114−C
Machine Model (MM) Class A, JESD22 A115−A
Charged Device Model (CDM), JESD22 C101−C
Power Dissipation
Case 29 (TO−92 Type)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 221A, 314A, 314B and 314D (TO−220 Type)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 318H (SOT−223)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 369A (DPAK) (Note 1)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 751 (SOP−8) (Note 2)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 936 and 936A (D
2
PAK) (Note 3)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Operating Ambient Temperature Range
Operating Die Junction Temperature
Storage Temperature Range
Symbol
V
I
V
I
(t)
−V
I
(t)
Value
40
60
−50−
Unit
Vdc
Vpk
Vpk
−
−
−
2000
200
2000
V
V
V
P
D
R
qJA
R
qJC
P
D
R
qJA
R
qJC
P
D
R
qJA
R
qJC
P
D
R
qJA
R
qJC
P
D
R
qJA
R
qJC
P
D
R
qJA
R
qJC
T
A
T
J
T
stg
Internally Limited
178
83
Internally Limited
65
5.0
Internally Limited
242
21
Internally Limited
92
6.0
Internally Limited
160
25
Internally Limited
70
5.0
−40
to +125
+150
−65
to +150
W
°C/W
°C/W
W
°C/W
°C/W
W
°C/W
°C/W
W
°C/W
°C/W
W
°C/W
°C/W
W
°C/W
°C/W
°C
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. DPAK Junction−to−Ambient Thermal Resistance is for vertical mounting. Refer to Figure 25 for board mounted Thermal Resistance.
2. SOP−8 Junction−to−Ambient Thermal Resistance is for minimum recommended pad size. Refer to Figure 24 for Thermal Resistance
variation versus pad size.
3. D
2
PAK Junction−to−Ambient Thermal Resistance is for vertical mounting. Refer to Figure 26 for board mounted Thermal Resistance.
4. NCV rated devices are subjected to and meet the AECQ−100 quality standards.
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3
LM2931, NCV2931 Series
ELECTRICAL CHARACTERISTICS
(V
in
= 14 V, I
O
= 10 mA, C
O
= 100
mF,
C
O(ESR)
= 0.3
W,
T
A
= 25°C [Note 5])
LM2931−5.0/NCV2931−5.0
Characteristic
FIXED OUTPUT
Output Voltage
V
in
= 14 V, I
O
= 10 mA, T
A
= 25°C
V
in
= 6.0 V to 26 V, I
O
≤
100 mA,
T
A
=
−
40° to +125°C
Line Regulation
V
in
= 9.0 V to 16 V
V
in
= 6.0 V to 26 V
Load Regulation (I
O
= 5.0 mA to 100 mA)
Output Impedance
I
O
= 10 mA,
DI
O
= 1.0 mA, f = 100 Hz to
10 kHz
Bias Current
V
in
= 14 V, I
O
= 100 mA, T
A
= 25°C
V
in
= 6.0 V to 26 V, I
O
= 10 mA, T
A
=
−
40° to
+125°C
Output Noise Voltage (f = 10 Hz to 100 kHz)
Long Term Stability
Ripple Rejection (f = 120 Hz)
Dropout Voltage
I
O
= 10 mA
I
O
= 100 mA
Over−Voltage Shutdown Threshold
Output Voltage with Reverse Polarity Input
(V
in
=
−15
V)
V
th(OV)
−V
O
V
n
S
RR
V
I
−V
O
−
−
26
−0.3
0.015
0.16
29.5
0
0.2
0.6
40
−
−
−
26
−0.3
0.015
0.16
29.5
0
0.2
0.6
40
−
V
V
I
B
−
−
−
−
60
5.8
0.4
700
20
90
30
1.0
−
−
−
−
−
−
−
60
5.8
0.4
700
20
90
30
1.0
−
−
−
mVrms
mV/kHR
dB
V
Reg
load
Z
O
−
200
−
−
200
−
mA
Reg
line
−
−
−
2.0
4.0
14
10
30
50
−
−
−
2.0
4.0
14
10
30
50
mV
mW
V
O
4.75
4.50
5.0
−
5.25
5.50
4.81
4.75
5.0
−
5.19
5.25
mV
V
Symbol
Min
Typ
Max
LM2931A−5.0/NCV2931A−5.0
Min
Typ
Max
Unit
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
6. NCV devices are qualified for automotive use.
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LM2931, NCV2931 Series
ELECTRICAL CHARACTERISTICS
(V
in
= 14 V, I
O
= 10 mA, C
O
= 100
mF,
C
O(ESR)
= 0.3
W,
T
A
= 25°C [Note 7])
LM2931C/NCV2931C
Characteristic
ADJUSTABLE OUTPUT
Reference Voltage (Note 8, Figure 18)
I
O
= 10 mA, T
A
= 25°C
I
O
≤
100 mA, T
A
=
−
40 to +125°C
Output Voltage Range
Line Regulation (V
in
= V
O
+ 0.6 V to 26 V)
Load Regulation (I
O
= 5.0 mA to 100 mA)
Output Impedance
I
O
= 10 mA,
DI
O
= 1.0 mA, f = 10 Hz to 10 kHz
Bias Current
I
O
= 100 mA
I
O
= 10 mA
Output Inhibited (V
th(OI)
= 2.5 V)
Adjustment Pin Current
Output Noise Voltage (f = 10 Hz to 100 kHz)
Long−Term Stability
Ripple Rejection (f = 120 Hz)
Dropout Voltage
I
O
= 10 mA
I
O
= 100 mA
Over−Voltage Shutdown Threshold
Output Voltage with Reverse Polarity Input
(V
in
=
−15
V)
Output Inhibit Threshold Voltages
Output “On”:
T
A
= 25°C
T
A
=
−
40° to +125°C
Output “Off”:
T
A
= 25°C
T
A
=
−
40° to +125°C
Output Inhibit Threshold Current (V
th(OI)
= 2.5 V)
V
ref
V
1.14
1.08
3.0 to
24
−
−
−
−
−
−
−
−
−
0.10
−
−
26
−0.3
1.20
−
2.7 to
29.5
0.2
0.3
40
6.0
0.4
0.2
0.2
140
0.4
0.003
0.015
0.16
29.5
0
1.26
1.32
−
1.5
1.0
−
−
1.0
1.0
−
−
−
−
0.2
0.6
40
−
1.17
1.15
3.0 to
24
−
−
−
−
−
−
−
−
−
0.10
−
−
26
−0.3
1.20
−
2.7 to
29.5
0.2
0.3
40
6.0
0.4
0.2
0.2
140
0.4
0.003
0.015
0.16
29.5
0
1.23
1.25
−
1.5
1.0
−
mA
−
1.0
1.0
−
−
−
−
0.2
0.6
40
−
V
V
V
−
−
2.50
3.25
−
2.15
−
2.26
−
30
1.90
1.20
−
−
50
−
−
2.50
3.25
−
2.15
−
2.26
−
30
1.90
1.20
−
−
50
mA
mA
mVrms/V
%/kHR
%/V
V
V
mV/V
%/V
mW/V
Symbol
Min
Typ
Max
LM2931AC/NCV2931AC
Min
Typ
Max
Unit
V
O range
Reg
line
Reg
load
Z
O
I
B
I
Adj
V
n
S
RR
V
I
−V
O
V
th(OV)
−V
O
V
th(OI)
I
th(OI)
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
8. The reference voltage on the adjustable device is measured from the output to the adjust pin across R
1
.
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