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ON Semiconductor
ON Semiconductor

LM2931 Datasheet

LOW DROPOUT VOLTAGE REGULATORS


LM2931 Datasheet Preview


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 inputtooutput 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 powerup with mirrorimage 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 microprocessorbased systems.
Features
InputtoOutput 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 MirrorImage Protection
Ideally Suited for Battery Powered Equipment
Economical 5Lead TO220 Package with Two Optional Leadforms
Available in Surface Mount SOP8, D2PAK and DPAK Packages
High Accuracy (±2.5%) Reference (LM2931AC) Available
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AECQ100
Qualified and PPAP Capable
PbFree Packages are Available
Applications
Battery Powered Consumer Products
Handheld Instruments
Camcorders and Cameras
SOIC8
D SUFFIX
CASE 751
8
1
FIXED
ADJUSTABLE
N.C. 5 4
N.C.
Output
Inhibit
54
Adjust
GND GND GND GND
Input 8 1
Output
Input 8 1
Output
(Top View)
(Top View)
http://onsemi.com
FIXED OUTPUT VOLTAGE
TO92
Z SUFFIX
CASE 29
1
23
TO220
T SUFFIX
CASE 221AB
1
23
DPAK
DT SUFFIX
CASE 369C
1
3
D2PAK
D2T SUFFIX
CASE 936
SOT223
ST SUFFIX
CASE 318H
1
3
3
1
Pin 1. Output
2. Ground
3. Input
Pin 1. Input
2. Ground
3. Output
ADJUSTABLE OUTPUT VOLTAGE
TO220
TH SUFFIX
CASE 314A
1
5
TO220
TV SUFFIX
1
CASE 314B
5
TO220
T SUFFIX
CASE 314D
1
Pin 1. Adjust
2. Output
Inhibit
3. Ground
4. Input
5. Output
5
D2PAK
D2T SUFFIX 1
CASE 936A
5
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.
© Semiconductor Components Industries, LLC, 2013
April, 2013 Rev. 26
1
Publication Order Number:
LM2931/D
Page 1

Input
6.0
LM2931, NCV2931 Series
Representative Schematic Diagram
Output
30 k *
Adjust
6.0 k
350
30 k
3.94 k
3.0 k
30 k
500
EPI
Bias
30 k
6.8 V
Output
Inhibit
50 k
48 k 180 k 184 k 5.8 V
92.8 k *
Ground
11.5 k
*Deleted on Adjustable Regulators
35 k
This device contains 26 active transistors.
10 k
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2
Page 2

LM2931, NCV2931 Series
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
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 A114C
Machine Model (MM) Class A, JESD22 A115A
Charged Device Model (CDM), JESD22 C101C
VI
VI(t)
VI(t)
40
60
50
2000
200
2000
Vdc
Vpk
Vpk
V
V
V
Power Dissipation
Case 29 (TO92 Type)
TA = 25°C
Thermal Resistance, JunctiontoAmbient
Thermal Resistance, JunctiontoCase
Case 221A, 314A, 314B and 314D (TO220 Type)
TA = 25°C
Thermal Resistance, JunctiontoAmbient
Thermal Resistance, JunctiontoCase
Case 318H (SOT223)
TA = 25°C
Thermal Resistance, JunctiontoAmbient
Thermal Resistance, JunctiontoCase
Case 369A (DPAK) (Note 1)
TA = 25°C
Thermal Resistance, JunctiontoAmbient
Thermal Resistance, JunctiontoCase
Case 751 (SOP8) (Note 2)
TA = 25°C
Thermal Resistance, JunctiontoAmbient
Thermal Resistance, JunctiontoCase
Case 936 and 936A (D2PAK) (Note 3)
TA = 25°C
Thermal Resistance, JunctiontoAmbient
Thermal Resistance, JunctiontoCase
Operating Ambient Temperature Range
PD
RqJA
RqJC
PD
RqJA
RqJC
PD
RqJA
RqJC
PD
RqJA
RqJC
PD
RqJA
RqJC
PD
RqJA
RqJC
TA
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
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
Operating Die Junction Temperature
TJ
+150
°C
Storage Temperature Range
Tstg
65 to +150
°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 JunctiontoAmbient Thermal Resistance is for vertical mounting. Refer to Figure 25 for board mounted Thermal Resistance.
2. SOP8 JunctiontoAmbient Thermal Resistance is for minimum recommended pad size. Refer to Figure 24 for Thermal Resistance
variation versus pad size.
3. D2PAK JunctiontoAmbient 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 AECQ100 quality standards.
http://onsemi.com
3
Page 3
Part Number LM2931
Manufactur ON Semiconductor
Description LOW DROPOUT VOLTAGE REGULATORS
Total Page 23 Pages
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