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LM2936
Ultra-Low Quiescent Current LDO Voltage Regulator
General Description
Features
The LM2936 ultra-low quiescent current regulator features
low dropout voltage and low current in the standby mode.
With less than 15 µA quiescent current at a 100 µA load, the
LM2936 is ideally suited for automotive and other battery
operated systems. The LM2936 retains all of the features
that are common to low dropout regulators including a low
dropout PNP pass device, short circuit protection, reverse
battery protection, and thermal shutdown. The LM2936 has
a 40V maximum operating voltage limit, a −40˚C to +125˚C
operating temperature range, and ± 3% output voltage tolerance over the entire output current, input voltage, and temperature range. The LM2936 is available in a TO-92 package, SO-8 and SOT–23 surface mount packages, and a
TO-252 surface mount power package.
n
n
n
n
n
n
n
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n
Ultra low quiescent current (IQ ≤ 15 µA for IO = 100 µA)
Fixed 3.0V, 3.3V or 5.0V with 50 mA output
± 2% Initial output tolerance
± 3% Output tolerance over line, load, and temperature
Dropout voltage typically 200 mV @ IO = 50 mA
Reverse battery protection
−50V reverse transient protection
Internal short circuit current limit
Internal thermal shutdown protection
40V operating voltage limit
60V operating voltage limit for LM2936HV
Shutdown Pin available with LM2936BM package
Typical Application
00975901
* Required if regulator is located more than 2" from power supply filter capacitor.
** Required for stability. See Electrical Characteristics for required values. Must be rated over intended operating temperature range. Effective series
resistance (ESR) is critical, see curve. Locate capacitor as close as possible to the regulator output and ground pins. Capacitance may be increased
without bound.
© 2006 National Semiconductor Corporation
DS009759
www.national.com
LM2936 Ultra-Low Quiescent Current LDO Voltage Regulator
October 2006
LM2936
Connection Diagrams
TO-252
SOT-223
00975926
00975925
Top View
LM2936DT
See NS Package Number TD03B
Top View
LM2936MP
See NS Package Number MP04A
8-Pin SO (M)
8-Pin SO (M)
00975906
00975927
Top View
LM2936M and LM2936HVMA
See NS Package Number M08A
Top View
LM2936BM and LM2936HVBMA
See NS Package Number M08A
TO-92
8-Pin Mini SOIC (MM)
00975902
Bottom View
LM2936Z
See NS Package Number Z03A
www.national.com
00975928
Top View
LM2936MM
See NS Package Number MUA08A
2
Output
High Shutdown
Voltage Voltage
Pin
3.00V
3.30V
5.00V
Order
Package Type
Package Drawing
Transport Media
-
Yes
LM2936BM-3.0
8-Lead SOIC
M08A
Rail
-
Yes
LM2936BMX-3.0
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936DT-3.0
TO-252
TD03B
Rail
-
-
LM2936DTX-3.0
TO-252
TD03B
Tape/Reel
Yes
Yes
LM2936HVBMA-3.0
8-Lead SOIC
M08A
Rail
Yes
Yes
LM2936HVBMAX3.0
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936M-3.0
8-Lead SOIC
M08A
Rail
-
-
LM2936MX-3.0
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936MP-3.0
SOT-223
MP04A
Tape/Reel
-
-
LM2936MPX-3.0
SOT-223
MP04A
Tape/Reel
-
-
LM2936MM-3.0
8-Lead Mini SOIC
MUA08A
Rail
-
-
LM2936MMX-3.0
8-Lead Mini SOIC
MUA08A
Tape/Reel
-
-
LM2936Z-3.0
TO-92
Z03A
Box
-
Yes
LM2936BM-3.3
8-Lead SOIC
M08A
Rail
-
Yes
LM2936BMX-3.3
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936DT-3.3
TO-252
TD03B
Rail
-
-
LM2936DTX-3.3
TO-252
TD03B
Tape/Reel
Yes
Yes
LM2936HVBMA-3.3
8-Lead SOIC
M08A
Rail
Yes
Yes
LM2936HVBMAX3.3
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936M-3.3
8-Lead SOIC
M08A
Rail
-
-
LM2936MX-3.3
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936MP-3.3
SOT-223
MP04A
Tape/Reel
-
-
LM2936MPX-3.3
SOT-223
MP04A
Tape/Reel
-
-
LM2936MM-3.3
8-Lead Mini- SOIC
MUA08A
Rail
-
-
LM2936MMX-3.3
8-Lead Mini- SOIC
MUA08A
Tape/Reel
-
-
LM2936Z-3.3
TO-92
Z03A
Box
-
Yes
LM2936BM-5.0
8-Lead SOIC
M08A
Rail
-
Yes
LM2936BMX-5.0
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936DT-5.0
TO-252
TD03B
Rail
-
-
LM2936DTX-5.0
TO-252
TD03B
Tape/Reel
Yes
Yes
LM2936HVBMA-5.0
8-Lead SOIC
M08A
Rail
Yes
Yes
LM2936HVBMAX5.0
8-Lead SOIC
M08A
Tape/Reel
Yes
-
LM2936HVMA-5.0
8-Lead SOIC
M08A
Rail
Yes
-
LM2936HVMAX-5.0
8-Lead SOIC
M08A
Tape/Reel
LM2936M-5.0
8-Lead SOIC
M08A
Rail
-
-
LM2936MX-5.0
8-Lead SOIC
M08A
Tape/Reel
-
-
LM2936MP-5.0
SOT-223
MP04A
Tape/Reel
-
-
LM2936MPX-5.0
SOT-223
MP04A
Tape/Reel
-
-
LM2936MM-5.0
8-Lead Mini-SOIC
MUA08A
Rail
-
-
LM2936MMX-5.0
8-Lead Mini-SOIC
MUA08A
Tape/Reel
-
-
LM2936Z-5.0
TO-92
Z03A
Box
3
www.national.com
LM2936
Ordering Information
LM2936
Absolute Maximum Ratings (Note 1)
Operating Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage (Survival)
Operating Temperature Range
+60V, −50V
ESD Susceptibility (Note 2)
2000V
Power Dissipation (Note 3)
Internally limited
Junction Temperature (TJmax)
+40V
Maximum Operating Input Voltage LM2936HV only
+60V
Maximum Shutdown Pin Voltage LM2936BM only
150˚C
Storage Temperature Range
−40˚C to +125˚C
Maximum Operating Input Voltage LM2936
0V to 40V
−65˚C to +150˚C
Lead Temperature (Soldering, 10
sec.)
260˚C
TO-92 (Z03A) θJA
195˚C/W
MSO-8 (MUA08A) θJA
200˚C/W
SO-8 (M08A) θJA
140˚C/W
SO-8 (M08A) θJC
45˚C/W
TO-252 (TD03B) θJA
136˚C/W
TO-252 (TD03B) θJC
6˚C/W
SOT-223 (MP04A) θJA
149˚C/W
SOT-223 (MP04A) θJC
36˚C/W
Electrical Characteristics for LM2936–3.0
VIN = 14V, IO = 10 mA, TJ = 25˚C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
(Note 5)
Typical
(Note 4)
Max
(Note 5)
Units
2.910
3.000
3.090
V
10
30
mV
LM2936HV–3.0 Only
Output Voltage
5.5V ≤ VIN ≤ 48V,
100 µA ≤ IO ≤ 50 mA (Note 6)
Line Regulation
6V ≤ VIN ≤ 60V, IO = 1mA
All LM2936–3.0
2.940
3.000
3.060
2.910
3.000
3.090
Output Voltage
4.0V ≤ VIN ≤ 26V,
100 µA ≤ IO ≤ 50 mA (Note 6)
Quiescent Current
IO = 100 µA, 8V ≤ VIN ≤ 24V
15
20
µA
IO = 10 mA, 8V ≤ VIN ≤ 24V
0.20
0.50
mA
IO = 50 mA, 8V ≤ VIN ≤ 24V
1.5
2.5
mA
5
10
mV
V
Line Regulation
9V ≤ VIN ≤ 16V
6V ≤ VIN ≤ 40V, IO = 1 mA
10
30
Load Regulation
100 µA ≤ IO ≤ 5 mA
10
30
5 mA ≤ IO ≤ 50 mA
10
30
IO = 100 µA
0.05
0.10
IO = 50 mA
0.20
0.40
V
120
250
mA
Dropout Voltage
Short Circuit Current
VO = 0V
Output Impedance
IO = 30 mAdc and 10 mArms,
Output Noise Voltage
10 Hz–100 kHz
f
65
450
mV
V
mΩ
= 1000 Hz
500
µV
20
mV/1000
Hr
−40
−60
dB
−50
−80
V
Long Term Stability
Ripple Rejection
Vripple = 1Vrms,
Reverse Polarity
RL = 500Ω, T = 1 ms
fripple
= 120 Hz
Transient Input Voltage
Output Voltage with
VIN = −15V, RL = 500Ω
0.00
−0.30
V
Reverse Polarity Input
Maximum Line Transient
www.national.com
RL = 500Ω, VO ≤ 3.30V, T = 40ms
4
60
V
(Continued)
VIN = 14V, IO = 10 mA, TJ = 25˚C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Output Bypass
Capacitance (COUT) ESR
Min
(Note 5)
Conditions
COUT = 22µF
0.1mA ≤ IOUT ≤ 50mA
Typical
(Note 4)
0.3
Max
(Note 5)
Units
8
Ω
0.010
V
Shutdown Input − LM2936BM–3.0 Only
Output Voltage, VOUT
Output Off, VSD=2.4V, RLOAD = 500Ω
Shutdown High
Threshold Voltage, VIH
Output Off, RLOAD = 500Ω
Shutdown Low
Threshold Voltage, VIL
Output On, RLOAD = 500Ω
1.1
Shutdown High
Current, IIH
Output Off, VSD = 2.4V, RLOAD = 500Ω
12
µA
Quiescent Current
Output Off, VSD = 2.4V, RLOAD = 500Ω
Includes IIH Current
30
µA
0
2.00
1.1
V
0.60
V
Electrical Characteristics for LM2936–3.3
VIN = 14V, IO = 10 mA, TJ = 25˚C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
(Note 5)
Typical
(Note 4)
Max
(Note 5)
Units
3.201
3.300
3.399
V
10
30
mV
LM2936HV–3.3 Only
Output Voltage
5.5V ≤ VIN ≤ 48V,
100 µA ≤ IO ≤ 50 mA (Note 6)
Line Regulation
6V ≤ VIN ≤ 60V, IO = 1mA
All LM2936–3.3
3.234
3.300
3.366
3.201
3.300
3.399
Output Voltage
4.0V ≤ VIN ≤ 26V,
100 µA ≤ IO ≤ 50 mA (Note 6)
Quiescent Current
IO = 100 µA, 8V ≤ VIN ≤ 24V
15
20
µA
IO = 10 mA, 8V ≤ VIN ≤ 24V
0.20
0.50
mA
IO = 50 mA, 8V ≤ VIN ≤ 24V
1.5
2.5
mA
mV
Line Regulation
Load Regulation
Dropout Voltage
9V ≤ VIN ≤ 16V
5
10
6V ≤ VIN ≤ 40V, IO = 1 mA
10
30
100 µA ≤ IO ≤ 5 mA
10
30
5 mA ≤ IO ≤ 50 mA
10
30
IO = 100 µA
0.05
0.10
IO = 50 mA
0.20
0.40
V
120
250
mA
Short Circuit Current
VO = 0V
Output Impedance
IO = 30 mAdc and 10 mArms,
f
Output Noise Voltage
V
65
450
mV
V
mΩ
= 1000 Hz
10 Hz–100 kHz
500
µV
20
mV/1000
Hr
−40
−60
dB
−50
−80
V
Long Term Stability
Ripple Rejection
Vripple = 1Vrms,
Reverse Polarity
RL = 500Ω, T = 1 ms
fripple
= 120 Hz
Transient Input Voltage
Output Voltage with
VIN = −15V, RL = 500Ω
0.00
−0.30
V
Reverse Polarity Input
Maximum Line Transient
RL = 500Ω, VO ≤ 3.63V, T = 40ms
5
60
V
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LM2936
Electrical Characteristics for LM2936–3.0
LM2936
Electrical Characteristics for LM2936–3.3
(Continued)
VIN = 14V, IO = 10 mA, TJ = 25˚C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Output Bypass
Capacitance (COUT) ESR
Min
(Note 5)
Conditions
COUT = 22µF
0.1mA ≤ IOUT ≤ 50mA
Typical
(Note 4)
0.3
Max
(Note 5)
Units
8
Ω
0.010
V
Shutdown Input − LM2936BM–3.3 Only
Output Voltage, VOUT
Output Off, VSD=2.4V, RLOAD = 500Ω
Shutdown High
Threshold Voltage, VIH
Output Off, RLOAD = 500Ω
Shutdown Low
Threshold Voltage, VIL
Output On, RLOAD = 500Ω
1.1
Shutdown High
Current, IIH
Output Off, VSD = 2.4V, RLOAD = 500Ω
12
µA
Quiescent Current
Output Off, VSD = 2.4V, RLOAD = 500Ω
Includes IIH Current
30
µA
0
2.00
1.1
V
0.60
V
Electrical Characteristics for LM2936–5.0
VIN = 14V, IO = 10 mA, TJ = 25˚C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
(Note 5)
Typical
(Note 4)
Max
(Note 5)
Units
4.85
5.00
5.15
V
15
35
mV
LM2936HV–5.0 Only
Output Voltage
5.5V ≤ VIN ≤ 48V,
100 µA ≤ IO ≤ 50 mA (Note 6)
Line Regulation
6V ≤ VIN ≤ 60V, IO = 1mA
All LM2936–5.0
4.90
5.00
5.10
4.85
5.00
5.15
Output Voltage
5.5V ≤ VIN ≤ 26V,
100 µA ≤ IO ≤ 50 mA (Note 6)
Quiescent Current
IO = 100 µA, 8V ≤ VIN ≤ 24V
9
15
µA
IO = 10 mA, 8V ≤ VIN ≤ 24V
0.20
0.50
mA
IO = 50 mA, 8V ≤ VIN ≤ 24V
1.5
2.5
mA
9V ≤ VIN ≤ 16V
5
10
mV
6V ≤ VIN ≤ 40V, IO = 1 mA
10
30
Line Regulation
Load Regulation
Dropout Voltage
100 µA ≤ IO ≤ 5 mA
10
30
5 mA ≤ IO ≤ 50 mA
10
30
IO = 100 µA
0.05
0.10
IO = 50 mA
0.20
0.40
V
120
250
mA
Short Circuit Current
VO = 0V
Output Impedance
IO = 30 mAdc and 10 mArms,
f
Output Noise Voltage
V
65
450
mV
V
mΩ
= 1000 Hz
10 Hz–100 kHz
500
µV
20
mV/1000
Hr
−40
−60
dB
−50
−80
V
Long Term Stability
Ripple Rejection
Vripple = 1Vrms,
Reverse Polarity
RL = 500Ω, T = 1 ms
fripple
= 120 Hz
Transient Input Voltage
Output Voltage with
VIN = −15V, RL = 500Ω
0.00
−0.30
V
Reverse Polarity Input
Maximum Line Transient
www.national.com
RL = 500Ω, VO ≤ 5.5V, T = 40ms
6
60
V
(Continued)
VIN = 14V, IO = 10 mA, TJ = 25˚C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Min
(Note 5)
Conditions
Output Bypass
Capacitance (COUT) ESR
COUT = 10µF
0.1mA ≤ IOUT ≤ 50mA
Typical
(Note 4)
Max
(Note 5)
Units
8
Ω
0.010
V
0.3
Shutdown Input − LM2936BM–5.0 Only
Output Voltage, VOUT
Output Off, VSD=2.4V, RLOAD = 500Ω
Shutdown High
Threshold Voltage, VIH
Output Off, RLOAD = 500Ω
Shutdown Low
Threshold Voltage, VIL
Output On, RLOAD = 500Ω
1.1
Shutdown High
Current, IIH
Output Off, VSD = 2.4V, RLOAD = 500Ω
12
µA
Quiescent Current
Output Off, VSD = 2.4V, RLOAD = 500Ω
Includes IIH Current
30
µA
0
2.00
1.1
V
0.60
V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its specified operating ratings.
Note 2: Human body model, 100 pF discharge through a 1.5 kΩ resistor.
Note 3: The maximum power dissipation is a function of TJmax, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
PD = (TJmax − TA)/θJA. If this dissipation is exceeded, the die temperature will rise above 150˚C and the LM2936 will go into thermal shutdown.
Note 4: Typicals are at 25˚C (unless otherwise specified) and represent the most likely parametric norm.
Note 5: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 6: To ensure constant junction temperature, pulse testing is used.
Typical Performance Characteristics
Maximum Power
Dissipation (TO-92)
Dropout Voltage
00975907
00975908
7
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LM2936
Electrical Characteristics for LM2936–5.0
LM2936
Typical Performance Characteristics
(Continued)
Dropout Voltage
Quiescent Current
00975909
00975910
Quiescent Current
Quiescent Current
00975912
00975911
Quiescent Current
Quiescent Current
00975914
00975913
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8
LM2936
Typical Performance Characteristics
(Continued)
LM2936–5.0 COUT ESR
LM2936–3.0 COUT ESR
00975915
00975929
LM2936–3.3 COUT ESR
Peak Output Current
00975916
00975930
Peak Output Current
LM2936–5.0 Current Limit
00975917
00975918
9
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LM2936
Typical Performance Characteristics
(Continued)
LM2936–5.0 Output at
Voltage Extremes
LM2936–5.0 Line Transient Response
00975920
00975919
LM2936–5.0 Ripple Rejection
LM2936–5.0 Load Transient Response
00975921
00975922
LM2936–5.0 Low Voltage Behavior
LM2936–5.0 Output Impedance
00975923
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00975924
10
Unlike other PNP low dropout regulators, the LM2936 remains fully operational to 40V. Owing to power dissipation
characteristics of the available packages, full output current
cannot be guaranteed for all combinations of ambient temperature and input voltage. As an example, consider an
LM2936Z–5.0 operating at 25˚C ambient. Using the formula
for maximum allowable power dissipation given in (Note 3) ,
we find that PDmax = 641 mW at 25˚C. Including the small
contribution of the quiescent current to total power dissipation the maximum input voltage (while still delivering 50 mA
output current) is 17.3V. The LM2936Z–5.0 will go into thermal shutdown if it attempts to deliver full output current with
an input voltage of more than 17.3V. Similarly, at 40V input
and 25˚C ambient the LM2936Z–5.0 can deliver 18 mA
maximum.
Under conditions of higher ambient temperatures, the voltage and current calculated in the previous examples will
drop. For instance, at the maximum ambient of 125˚C the
LM2936Z–5.0 can only dissipate 128 mW, limiting the input
voltage to 7.34V for a 50 mA load, or 3.5 mA output current
for a 40V input.
The junction to ambient thermal resistance θJA rating has
two distinct components: the junction to case thermal resistance rating θJC; and the case to ambient thermal resistance
rating θCA. The relationship is defined as: θJA = θJC + θCA.
For the SO-8 and TO-252 surface mount packages the θJA
rating can be improved by using the copper mounting pads
on the printed circuit board as a thermal conductive path to
extract heat from the package.
On the TO-252 package the ground tab is thermally connected to the backside of the die. Adding 1 square inch of 2
oz. copper pad area directly under the ground tab will improve the θJA rating to approximately 50˚C/W.
While the LM2936 has an internally set thermal shutdown
point of typically 160˚C, this is intended as a safety feature
only. Continuous operation near the thermal shutdown temperature should be avoided as it may have a negative affect
on the life of the device.
While the LM2936 maintains regulation to 60V, it will not
withstand a short circuit above 40V because of safe operating area limitations in the internal PNP pass device. Above
60V the LM2936 will break down with catastrophic effects on
the regulator and possibly the load as well. Do not use this
device in a design where the input operating voltage may
exceed 40V, or where transients are likely to exceed 60V.
SHUTDOWN PIN
The LM2936BM has a pin for shutting down the regulator
output. Applying a Logic Level High ( > 2.0V) to the Shutdown
pin will cause the output to turn off. Leaving the Shutdown
pin open, connecting it to Ground, or applying a Logic Level
Low ( < 0.6V) will allow the regulator output to turn on.
11
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LM2936
On the SO-8 package the four ground pins are thermally
connected to the backside of the die. Adding approximately
0.04 square inches of 2 oz. copper pad area to these four
pins will improve the θJA rating to approximately 110˚C/W. If
this extra pad are is placed directly beneath the package
there should not be any impact on board density.
Applications Information
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12
Equivalent Schematic Diagram
00975905
LM2936
LM2936
Physical Dimensions
inches (millimeters) unless otherwise noted
8-Lead Small Outline Molded Package (M)
NS Package Number M08A
TO-252 Package (DT)
NS Package Number TD03B
13
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LM2936
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
3-Lead TO-92 Plastic Package (Z)
NS Package Number Z03A
SOT-223 Package (MP)
NS Package Number MP04A
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14
LM2936 Ultra-Low Quiescent Current LDO Voltage Regulator
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
8-Lead Mini SOIC package (MM)
NS Package Number MUA08A
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
For the most current product information visit us at www.national.com.
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