LM2936
www.ti.com
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
LM2936 Ultra-Low Quiescent Current LDO Voltage Regulator
Check for Samples: LM2936
FEATURES
1
•
2
•
•
•
•
•
•
•
•
•
•
•
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
DESCRIPTION
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,
SOIC-8 and SOT–223 surface mount packages, and
a PFM surface mount power package.
Typical Application
* 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.
1
2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2013, Texas Instruments Incorporated
LM2936
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Connection Diagrams
Figure 1. PFM
Top View
See Package Number NDP0003B
Figure 2. SOT-223
Top View
See Package Number DCY0004A
Figure 3. 8-Pin SOIC (D)
Top View
See Package Number D0008A
Figure 4. 8-Pin SOIC (D)
Top View
See Package Number D0008A
Figure 5. TO-92
Bottom View
See Package Number LP0003A
Figure 6. 8-Pin VSSOP (DGK)
Top View
See Package Number DGK0008A
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
(1) (2)
+60V, −50V
Input Voltage (Survival)
ESD Susceptibility
(3)
2000V
Power Dissipation
(4)
Internally limited
Junction Temperature (TJmax)
150°C
−65°C to +150°C
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
(1)
(2)
(3)
(4)
2
260°C
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.
If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
Human body model, 100 pF discharge through a 1.5 kΩ resistor.
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.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
LM2936
www.ti.com
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
Operating Ratings
−40°C to +125°C
Operating Temperature Range
Maximum Operating Input Voltage - LM2936
+40V
Maximum Operating Input Voltage - LM2936HV only
+60V
Maximum Shutdown Pin Voltage - LM2936BM only
0V to 40V
TO-92 (LP0003A) θJA
195°C/W
VSSOP-8 (DGK0008A) θJA
200°C/W
SOIC-8 (D0008A) θJA
140°C/W
SOIC-8 (D0008A) θJC
45°C/W
PFM (NDP0003B) θJA
136°C/W
PFM (NDP0003B) θJC
6°C/W
SOT-223 (DCY0004A) θJA
149°C/W
SOT-223 (DCY0004A) 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
Min
Typical
Max
(1)
Units
2.910
3.000
3.090
V
10
30
mV
2.940
3.000
3.060
2.910
3.000
3.090
V
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
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
0.05
0.10
0.20
0.40
V
120
250
mA
Parameter
Conditions
(1)
(2)
LM2936HV–3.0 Only
Output Voltage
5.5V ≤ VIN ≤ 48V,
100 µA ≤ IO ≤ 50 mA
Line Regulation
6V ≤ VIN ≤ 60V, IO = 1mA
(3)
All LM2936–3.0
Output Voltage
Quiescent Current
Line Regulation
Load Regulation
Dropout Voltage
4.0V ≤ VIN ≤ 26V,
100 µA ≤ IO ≤ 50 mA
(3)
IO = 100 μA
IO = 50 mA
Short Circuit Current
VO = 0V
Output Impedance
IO = 30 mAdc and 10 mArms,
f
Output Noise Voltage
65
450
10 Hz–100 kHz
Ripple Rejection
Vripple = 1Vrms, fripple = 120 Hz
−40
Reverse Polarity
Transient Input Voltage
RL = 500Ω, T = 1 ms
−50
Output Voltage with
Reverse Polarity Input
VIN = −15V, RL = 500Ω
Maximum Line Transient
RL = 500Ω, VO ≤ 3.30V, T = 40ms
60
Output Bypass
Capacitance (COUT) ESR
COUT = 22µF
0.1mA ≤ IOUT ≤ 50mA
0.3
mV
V
mΩ
= 1000 Hz
Long Term Stability
mV
500
μV
20
mV/1000 Hr
−60
dB
−80
V
0.00
−0.30
V
V
8
Ω
Shutdown Input − LM2936BM–3.0 Only
(1)
(2)
(3)
Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
Typicals are at 25°C (unless otherwise specified) and represent the most likely parametric norm.
To ensure constant junction temperature, pulse testing is used.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
3
LM2936
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Electrical Characteristics for LM2936–3.0 (continued)
VIN = 14V, IO = 10 mA, TJ = 25°C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
Typical
Max
(1)
Units
0
0.010
V
2.00
1.1
(1)
(2)
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
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
Min
Typical
Max
(1)
Units
3.201
3.300
3.399
V
10
30
mV
3.234
3.300
3.366
3.201
3.300
3.399
V
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
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
Parameter
Conditions
(1)
(2)
LM2936HV–3.3 Only
Output Voltage
5.5V ≤ VIN ≤ 48V,
100 µA ≤ IO ≤ 50 mA
Line Regulation
6V ≤ VIN ≤ 60V, IO = 1mA
(3)
All LM2936–3.3
Output Voltage
Quiescent Current
Line Regulation
Load Regulation
Dropout Voltage
4.0V ≤ VIN ≤ 26V,
100 µA ≤ IO ≤ 50 mA
(3)
65
mV
mV
V
Short Circuit Current
VO = 0V
Output Impedance
IO = 30 mAdc and 10 mArms,
f = 1000 Hz
450
Output Noise Voltage
10 Hz–100 kHz
500
μV
20
mV/1000 Hr
−60
dB
−80
V
Long Term Stability
Ripple Rejection
Vripple = 1Vrms, fripple = 120 Hz
−40
Reverse Polarity
Transient Input Voltage
RL = 500Ω, T = 1 ms
−50
Output Voltage with
Reverse Polarity Input
VIN = −15V, RL = 500Ω
Maximum Line Transient
RL = 500Ω, VO ≤ 3.63V, T = 40ms
60
Output Bypass
Capacitance (COUT) ESR
COUT = 22µF
0.1mA ≤ IOUT ≤ 50mA
0.3
0.00
mΩ
−0.30
V
V
8
Ω
0.010
V
Shutdown Input − LM2936BM–3.3 Only
Output Voltage, VOUT
(1)
(2)
(3)
4
Output Off, VSD=2.4V, RLOAD = 500Ω
0
Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
Typicals are at 25°C (unless otherwise specified) and represent the most likely parametric norm.
To ensure constant junction temperature, pulse testing is used.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
LM2936
www.ti.com
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
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
Conditions
Min
Typical
2.00
1.1
(1)
(2)
Max
(1)
Units
Shutdown High
Threshold Voltage, VIH
Output Off, RLOAD = 500Ω
V
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
0.60
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
Typical
Max
(1)
Units
4.85
5.00
5.15
V
15
35
mV
4.90
5.00
5.10
4.85
5.00
5.15
(1)
(2)
LM2936HV–5.0 Only
Output Voltage
5.5V ≤ VIN ≤ 48V,
100 µA ≤ IO ≤ 50 mA
Line Regulation
6V ≤ VIN ≤ 60V, IO = 1mA
(3)
All LM2936–5.0
Output Voltage
Quiescent Current
Line Regulation
Load Regulation
Dropout Voltage
5.5V ≤ VIN ≤ 26V,
100 µA ≤ IO ≤ 50 mA
(3)
V
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
mA
1.5
2.5
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
0.05
0.10
0.20
0.40
V
120
250
mA
IO = 100 μA
IO = 50 mA
65
mV
mV
V
Short Circuit Current
VO = 0V
Output Impedance
IO = 30 mAdc and 10 mArms,
f = 1000 Hz
450
Output Noise Voltage
10 Hz–100 kHz
500
μV
20
mV/1000 Hr
−60
dB
−80
V
Long Term Stability
Ripple Rejection
Vripple = 1Vrms, fripple = 120 Hz
−40
Reverse Polarity
Transient Input Voltage
RL = 500Ω, T = 1 ms
−50
Output Voltage with
Reverse Polarity Input
VIN = −15V, RL = 500Ω
Maximum Line Transient
RL = 500Ω, VO ≤ 5.5V, T = 40ms
60
Output Bypass
Capacitance (COUT) ESR
COUT = 10µF
0.1mA ≤ IOUT ≤ 50mA
0.3
0.00
mΩ
−0.30
V
V
8
Ω
0.010
V
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
(1)
(2)
(3)
0
2.00
1.1
V
Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
Typicals are at 25°C (unless otherwise specified) and represent the most likely parametric norm.
To ensure constant junction temperature, pulse testing is used.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
5
LM2936
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Electrical Characteristics for LM2936–5.0 (continued)
VIN = 14V, IO = 10 mA, TJ = 25°C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
(1)
Typical
Max
(1)
Units
0.60
V
(2)
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
6
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
LM2936
www.ti.com
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
Typical Performance Characteristics
Maximum Power
Dissipation (TO-92)
Dropout Voltage
Figure 7.
Figure 8.
Dropout Voltage
Quiescent Current
Figure 9.
Figure 10.
Quiescent Current
Quiescent Current
Figure 11.
Figure 12.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
7
LM2936
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Typical Performance Characteristics (continued)
Quiescent Current
Quiescent Current
Figure 13.
Figure 14.
LM2936–5.0 COUT ESR
LM2936–3.0 COUT ESR
50
8
Figure 15.
Figure 16.
LM2936–3.3 COUT ESR
Peak Output Current
Figure 17.
Figure 18.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
LM2936
www.ti.com
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
Typical Performance Characteristics (continued)
Peak Output Current
LM2936–5.0 Current Limit
Figure 19.
Figure 20.
LM2936–5.0 Line Transient Response
LM2936–5.0 Output at
Voltage Extremes
Figure 21.
Figure 22.
LM2936–5.0 Ripple Rejection
LM2936–5.0 Load Transient Response
Figure 23.
Figure 24.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
9
LM2936
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Typical Performance Characteristics (continued)
10
LM2936–5.0 Low Voltage Behavior
LM2936–5.0 Output Impedance
Figure 25.
Figure 26.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM2936
LM2936
www.ti.com
SNOSC48N – JUNE 2000 – REVISED MARCH 2013
APPLICATIONS INFORMATION
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 ensured 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 (1), 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 SOIC-8 and PFM 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 SOIC-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.
On the PFM 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 (