TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
CAP-FREE NMOS 150 mA LOW DROPOUT REGULATOR
WITH REVERSE CURRENT PROTECTION
FEATURES
1
• Controlled Baseline
– One Assembly
– Test Site
– One Fabrication Site
• Extended Temperature Performance of
–55°C to 125°C
• Enhanced Diminishing Manufacturing Sources
(DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree (1)
• Stable With No Output Capacitor or Any Value
or Type of Capacitor
• Input Voltage Range of 1.7 V to 5.5 V
• Ultralow Dropout Voltage: 30 mV Typical
• Excellent Load Transient Response—With or
Without Optional Output Capacitor
• New NMOS Topology Provides Low Reverse
Leakage Current
2
(1)
Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
•
•
•
•
•
•
Low Noise: 30 μVRMS Typ (10 kHz to 100 kHz)
0.5% Initial Accuracy
1% Overall Accuracy Over Line, Load, and
Temperature
Less Than 1 μA Maximum IQ in Shutdown
Mode
Thermal Shutdown and Specified Min/Max
Current Limit Protection
Available in Multiple Output Voltage Versions
– Fixed Outputs of 1.2 V to 5 V
– Adjustable Outputs from 1.2 V to 5.5 V
– Custom Outputs Available
APPLICATIONS
•
•
•
•
Portable/Battery-Powered Equipment
Post-Regulation for Switching Supplies
Noise-Sensitive Circuitry such as VCOs
Point of Load Regulation for DSPs, FPGAs,
ASICs, and Microprocessors
DESCRIPTION/ORDERING INFORMATION
The TPS731xx family of low-dropout (LDO) linear voltage regulators uses a new topology: an NMOS pass
element in a voltage-follower configuration. This topology is stable using output capacitors with low ESR and
even allows operation without a capacitor. It also provides high reverse blockage (low reverse current) and
ground pin current that is nearly constant over all values of output current.
The TPS731xx uses an advanced BiCMOS process to yield high precision while delivering low dropout voltages
and low ground pin current. Current consumption, when not enabled, is under 1 μA and ideal for portable
applications. The low output noise (30 μVRMS with 0.1 μF CNR) is ideal for powering VCOs. These devices are
protected by thermal shutdown and foldback current limit.
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 © 2006–2007, Texas Instruments Incorporated
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
Optional
Optional
VIN
IN
DBV PACKAGE
SOT23
(TOP VIEW)
VOUT
OUT
TPS731xx
EN
GND
NR
IN
1
GND
2
EN
3
Optional
5
OUT
4
NR/FB
Typical Application Circuit for Fixed-Voltage Versions
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PRODUCT INFORMATION (1)
VOUT (2)
PRODUCT
TPS731xxMyyyzEP
(1)
(2)
(3)
For the most current specification and package information, see the Package Option Addendum located at the end of this data sheet or
see the Texas Instruments website at www.ti.com.
Output voltages from 1.3 V to 4 V in 100 mV increments are available through the use of innovative factory EEPROM programming.
Minimum order quantities apply; contact factory for details and availability.
For fixed 1.2 V operation, tie FB to OUT
ORDERING INFORMATION (1)
TA
–55°C to 125°C
(1)
(2)
2
XX is nominal output voltage (for example, 25 = 2.5 V, 01 = Adjustable (3)).
YYY is package designator.
Z is package quantity.
PACKAGE (2)
SOT23 - DBV
ORDERABLE PART NUMBER
TOP-SIDE MARKING
TPS73101MDBVREP
PKAM
TPS73115MDBVREP
PKBM
TPS731125MDBVREP
PMMM
TPS73118MDBVREP
PKCM
TPS73125MDBVREP
PKDM
TPS73130MDBVREP
PKEM
TPS73132MDBVREP
PKFM
TPS73133MDBVREP
PKHM
TPS73150MDBVREP
PKIM
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
Submit Documentation Feedback
Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
ABSOLUTE MAXIMUM RATINGS
over operating junction temperature range unless otherwise noted (1)
VIN range
–0.3 V to 6 V
VEN range
–0.3 V to 6 V
VOUT range
–0.3 V to 5.5 V
Peak output current
Internally limited
Output short-circuit duration
Indefinite
See Power Dissipation Ratings
Table
Continuous total power dissipation
Ambient temperature range, TA
–55°C to 150°C
Storage temperature range
–65°C to 150°C
ESD rating, HBM
2 kV
ESD rating, CDM
500 V
(1)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under the Electrical Characteristics
is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability.
POWER DISSIPATION RATINGS (1)
BOARD
PACKAGE
RΘJC
RΘJA
DERATING FACTOR
ABOVE TA = 25°C
TA ≤ 25°C
POWER
RATING
TA = 70°C
POWER
RATING
TA = 85°C
POWER
RATING
TA = 125°C
POWER
RATING
Low-K (2)
DBV
64°C/W
255°C/W
3.9 mW/°C
450 mW
275 mW
215 mW
58 mW
DBV
64°C/W
180°C/W
5.6 mW/°C
638 mW
388 mW
305 mW
83 mW
High-K
(1)
(2)
(3)
(3)
See Power Dissipation in the Application Information section for more information related to thermal design.
The JEDEC Low-K (1s) board design used to derive this data was a 3 inch × 3 inch, two-layer board with 2-ounce copper traces on top
of the board.
The JEDEC High-K (2s2p) board design used to derive this data was a 3 inch × 3 inch, multilayer board with 1-ounce internal power and
ground planes and 2-ounce copper traces on the top and bottom of the board.
Copyright © 2006–2007, Texas Instruments Incorporated
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TPS73132-EP TPS73133-EP TPS73150-EP
3
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
ELECTRICAL CHARACTERISTICS
Over operating temperature range (TA = –55°C to +125°C), VIN = VOUT(nom) + 0.5 V (1), IOUT = 10 mA, VEN = 1.7 V, and
COUT = 0.1 μF, unless otherwise noted. Typical values are at TA = 25°C
PARAMETER
TEST CONDITIONS
VIN
Input voltage range (1)
VFB
Internal reference (TPS73101)
MIN
TA = 25°C
1.198
Output voltage range (TPS73101)
VOUT
Accuracy (1)
ΔVOUT%/ΔVIN
TA = 25°C
VIN, IOUT, and T
VOUT + 0.5 V ≤ VIN ≤ 5.5 V,
10 mA ≤ IOUT ≤ 150 mA
ΔVOUT%/ΔIOUT Load regulation
MAX
V
1.21
V
5.5 – VDO
V
±0.5
–1
VOUT(nom) + 0.5 V ≤ VIN ≤ 5.5 V
±0.5
%
+1
0.01
1 mA ≤ IOUT ≤ 150 mA
0.002
10 mA ≤ IOUT ≤ 150 mA
0.0005
UNIT
5.5
1.2
VFB
Nominal
Line regulation (1)
TYP
1.7
%
%/V
%/mA
VDO
Dropout voltage (2)
(VIN = VOUT (nom) – 0.1 V)
IOUT = 150 mA
ZO(DO)
Output impedance in dropout
1.7 V ≤ VIN ≤ VOUT + VDO
ICL
Output current limit
VOUT = 0.9 × VOUT(nom)
ISC
Short-circuit current
VOUT = 0 V
200
IREV
Reverse leakage current (3) (–IIN)
VEN ≤ 0.5 V, 0 V ≤ VIN ≤ VOUT
0.1
15
IOUT = 10 mA (IQ)
400
550
IOUT = 150 mA
550
750
VEN ≤ 0.5 V, VOUT ≤ VIN ≤ 5.5
0.02
1
μA
0.1
0.475
μA
IGND
Ground pin current
ISHDN
Shutdown current (IGND)
IFB
FB pin current (TPS73101)
30
360
PSRR
Power-supply rejection ratio
(ripple rejection)
VN
Output noise voltage
BW = 10 Hz to 100 kHz
COUT = 10 μF, No CNR
27 × VOUT
COUT = 10 μF, CNR = 0.01 μF
8.5 × VOUT
tSTR
Startup time
VEN(HI)
Enable high (enabled)
VEN(LO)
Enable low (shutdown)
IEN(HI)
Enable pin current (enabled)
TSD
Thermal shutdown temperature
TA
Operating ambient temperature
4
mV
500
mA
Ω
0.25
150
f = 100 Hz, IOUT = 150 mA
(1)
(2)
(3)
100
58
f = 10 kHz, IOUT = 150 mA
37
VOUT = 3 V, RL = 30Ω
COUT = 1 μF, CNR = 0.01 μF
mA
μVRMS
μs
VIN
0
VEN = 5.5 V
0.02
Shutdown, Temperature increasing
160
Reset, Temperature decreasing
140
–55
μA
dB
600
1.7
μA
V
0.5
V
0.1
μA
°C
125
°C
Minimum VIN = VOUT + VDO or 1.7 V, whichever is greater.
VDO is not measured for the TPS73115 (VO(nom) = 1.5 V) and TPS731125 (VO(nom) = 1.25 V) since minimum VIN = 1.7 V.
Fixed-voltage versions only; see the Applications Infomation section for more information.
Submit Documentation Feedback
Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
16
14
Years Estimated Life
12
10
8
6
4
2
0
100
A.
110
120
130
Continuous Tj (°C)
140
150
160
Tj = θJA × W + TA (at standard JESD 51 conditions)
Figure 1. Estimated Device Life at Elevated Temperatures
Electromigration Fail Mode
Copyright © 2006–2007, Texas Instruments Incorporated
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Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
5
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
FUNCTIONAL BLOCK DIAGRAMS
IN
4MHz
Charge Pump
EN
Thermal
Protection
Ref
Servo
27kΩ
Bandgap
Error
Amp
Current
Limit
OUT
8kΩ
GND
R1
R1 + R2 = 80kΩ
R2
NR
Figure 2. Fixed Voltage Version
Table 1. Standard 1%
Resistor Values for
Common Output Voltages
IN
VO
4MHz
Charge Pump
EN
Thermal
Protection
Ref
Servo
27kΩ
Bandgap
Error
Amp
OUT
Current
Limit
GND
8kΩ
80kΩ
R1
R2
1.2V
Short
Open
1.5V
23.2kΩ
95.3kΩ
1.8V
28.0kΩ
56.2kΩ
2.5V
39.2kΩ
36.5kΩ
2.8V
44.2kΩ
33.2kΩ
3.0V
46.4kΩ
30.9kΩ
3.3V
52.3kΩ
30.1kΩ
5.0V
78.7kΩ
24.9kΩ
NOTE: VOUT = (R1 + R2)/R2 × 1.204;
R1R2 ≅ 19kΩ for best
accuracy.
R1
FB
R2
Figure 3. Adjustable Voltage Version
6
Submit Documentation Feedback
Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
PIN ASSIGNMENTS
DBV PACKAGE
SOT23
(TOP VIEW)
IN
1
GND
2
EN
3
5
OUT
4
NR/FB
TERMINAL FUNCTIONS
TERMINAL
NAME
SOT23
(DBV)
PIN NO.
DESCRIPTION
IN
1
Unregulated input supply
GND
2
Ground
EN
3
Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the regulator into shutdown
mode. Refer to the Shutdown section under Application Information for more details. EN can be connected to
IN if not used.
NR
4
Fixed voltage versions only—connecting an external capacitor to this pin bypasses noise generated by the
internal bandgap, reducing output noise to very low levels.
FB
4
Adjustable voltage version only—this is the input to the control loop error amplifier, and is used to set the
output voltage of the device.
OUT
5
Output of the regulator. There are no output capacitor requirements for stability.
Copyright © 2006–2007, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
7
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
TYPICAL CHARACTERISTICS
For all voltage versions at TJ= 25°C, VIN = VOUT(nom) + 0.5 V, IOUT = 10 mA, VEN = 1.7 V, and COUT = 0.1 μF,
unless otherwise noted
LOAD REGULATION
LINE REGULATION
0.5
0.20
Referred to IOUT = 10mA
0.4
Change in VOUT (%)
0.3
Change in VOUT (%)
Referred to VIN = VOUT + 0.5V at IOUT = 10mA
0.15
0.2
0.1
0
−0.1
−0.2
−0.3
0.10
0
−0.05
−40_ C
−0.10
−0.15
−0.4
−0.20
−0.5
0
15
30
45
60
75
90
105
120
135 150
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
VIN − VOUT (V)
IOUT (mA)
Figure 4.
Figure 5.
DROPOUT VOLTAGE vs OUTPUT CURRENT
DROPOUT VOLTAGE vs TEMPERATURE
50
50
TPS73125DBV
+125_ C
40
30
+25_ C
20
10
40
VDO (mV)
VDO (mV)
+25_ C
+125_C
0.05
0
30
60
90
120
30
20
10
−40_C
0
TPS73125DBV
IOUT = 150mA
0
−50
150
IOUT (mA)
−25
0
25
50
75
100
125
Temperature (_ C)
Figure 6.
Figure 7.
OUTPUT VOLTAGE ACCURACY HISTOGRAM
OUTPUT VOLTAGE DRIFT HISTOGRAM
30
18
I OUT = 10mA
16
25
I OUT = 10mA
All Voltage Versions
Percent of Units (%)
Percent of Units (%)
14
20
15
10
12
10
8
6
4
5
2
0
8
−1.0
−0.9
−0.8
−0.7
−0.6
−0.5
−0.4
−0.3
−0.2
−0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
10
20
30
40
50
60
70
80
90
100
0
VOUT Error (%)
Worst Case dVOUT/dT (ppm/_ C)
Figure 8.
Figure 9.
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Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
TYPICAL CHARACTERISTICS (continued)
For all voltage versions at TJ= 25°C, VIN = VOUT(nom) + 0.5 V, IOUT = 10 mA, VEN = 1.7 V, and COUT = 0.1 μF,
unless otherwise noted
GROUND PIN CURRENT vs TEMPERATURE
700
600
600
500
500
IGND (µA)
IGND (µA)
GROUND PIN CURRENT vs OUTPUT CURRENT
700
400
300
200
400
300
VIN = 5.5V
VIN = 4V
VIN = 2V
200
VIN = 5.5V
VIN = 4V
VIN = 2V
100
100
0
0
30
60
90
120
0
−50
150
−25
0
25
50
75
100
I OUT (mA)
Temperature (_ C)
Figure 10.
Figure 11.
CURRENT LIMIT vs VOUT
(FOLDBACK)
GROUND PIN CURRENT in SHUTDOWN
vs TEMPERATURE
400
125
1
VENABLE = 0.5V
VIN = VO + 0.5V
350
ICL
300
250
IGND (µA)
Current Limit (mA)
IOUT = 150mA
ISC
200
150
0.1
100
50
TPS73133
0
0
0.5
1.0
1.5
2.0
2.5
3.0
0.01
−50
3.5
0
25
50
Temperature (_C)
Figure 12.
Figure 13.
CURRENT LIMIT vs VIN
75
100
125
CURRENT LIMIT vs TEMPERATURE
500
500
450
450
400
400
Current Limit (mA)
Current Limit (mA)
−25
VOUT (V)
350
300
250
200
350
300
250
200
150
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
150
−50
−25
0
25
50
VIN (V)
Temperature (_C)
Figure 14.
Figure 15.
Copyright © 2006–2007, Texas Instruments Incorporated
75
100
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TPS73132-EP TPS73133-EP TPS73150-EP
125
9
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
TYPICAL CHARACTERISTICS (continued)
For all voltage versions at TJ= 25°C, VIN = VOUT(nom) + 0.5 V, IOUT = 10 mA, VEN = 1.7 V, and COUT = 0.1 μF,
unless otherwise noted
PSRR (RIPPLE REJECTION) vs FREQUENCY
PSRR (RIPPLE REJECTION) vs VIN – VOUT
90
40
IO = 1mA
CO = Any
70
IO = 1mA
CO = 1 m F
IO = 1mA
CO = 10mF
35
30
PSRR (dB)
60
IO = 100mA
C O = 1m F
50
IO = 100mA
CO = Any
40
PSRR (dB)
80
30
25
20
15
10
20
10
VIN = VOUT = 1.25V
0
10
1k
100
10k
Frequency = 100kHz
COUT = 10µF
VOUT = 2.5V
5
IO = Any
CO = 0 mF
0
100k
1M
10M
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Frequency (Hz)
VIN − VOUT (V)
Figure 16.
Figure 17.
NOISE SPECTRAL DENSITY
CNR = 0 μF
NOISE SPECTRAL DENSITY
CNR = 0.01 μF
1
1.8
2.0
1
COUT = 0µF
0.1
COUT = 10µF
eN (µV/√Hz)
eN (µV/√Hz)
C OUT = 1µF
COUT = 1µF
0.1
COUT = 0µF
COUT = 10µF
I OUT = 150mA
I OUT = 150mA
0.01
0.01
10
100
1k
10k
100k
10
100
1k
Frequency (Hz)
Frequency (Hz)
Figure 18.
Figure 19.
RMS NOISE VOLTAGE vs COUT
10k
100k
RMS NOISE VOLTAGE vs CNR
60
140
50
120
VOUT = 5.0V
VOUT = 5.0V
100
30
VN (RMS)
VN (RMS)
40
VOUT = 3.3V
20
10
0.1
10
20
CNR = 0.01µF
10Hz < Frequency < 100kHz
0
1
10
VOUT = 3.3V
60
40
VOUT = 1.5V
0
80
VOUT = 1.5V
COUT = 0µF
10Hz < Frequency < 100kHz
1p
10p
100p
COUT (µF)
CNR (F)
Figure 20.
Figure 21.
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1n
10n
Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
TYPICAL CHARACTERISTICS (continued)
For all voltage versions at TJ= 25°C, VIN = VOUT(nom) + 0.5 V, IOUT = 10 mA, VEN = 1.7 V, and COUT = 0.1 μF,
unless otherwise noted
TPS73133
LOAD TRANSIENT RESPONSE
VIN = 3.8V
TPS73133
LINE TRANSIENT RESPONSE
COUT = 0µF
40mV/tick
IOUT = 150mA
VOUT
COUT = 0µF
50mV/div
COUT = 1µF
40mV/tick
COUT = 10µF
40mV/tick
VOUT
VOUT
VOUT
COUT = 100µF
50mV/div
IOUT
25mA/tick
10mA
4.5V
1V/div
VIN
10µs/div
10µs/div
Figure 23.
TPS73133
TURN-ON RESPONSE
TPS73133
TURN-OFF RESPONSE
RL = 20Ω
COUT = 10µF
VOUT
RL = 20Ω
CO UT = 1µF
= 0.5V/µs
dt
Figure 22.
RL = 1kΩ
COUT = 0µF
R L = 20Ω
C OUT = 1µF
1V/div
RL = 1kΩ
COUT = 0µF
RL = 20Ω
COUT = 10µF
VOUT
2V
2V
VEN
1V/div
1V/div
0V
0V
VEN
100µs/div
100µs/div
Figure 24.
Figure 25.
TPS73133
POWER UP / POWER DOWN
IENABLE vs TEMPERATURE
10
6
5
4
VIN
VOUT
IENABLE (nA)
3
Volts
dVIN
5.5V
150mA
1V/div
VOUT
2
1
1
0.1
0
−1
−2
50ms/div
0.01
−50
−25
0
25
50
75
100
125
Temperature (_C)
Figure 26.
Copyright © 2006–2007, Texas Instruments Incorporated
Figure 27.
Submit Documentation Feedback
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
11
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
TYPICAL CHARACTERISTICS (continued)
For all voltage versions at TJ= 25°C, VIN = VOUT(nom) + 0.5 V, IOUT = 10 mA, VEN = 1.7 V, and COUT = 0.1 μF,
unless otherwise noted
TPS73101
IFB vs TEMPERATURE
60
160
55
140
50
120
45
100
IFB (nA)
VN (rms)
TPS73101
RMS NOISE VOLTAGE vs CADJ
40
35
30
25
80
60
VOUT = 2.5V
COUT = 0µF
R1 = 39.2kΩ
10Hz < Frequency < 100kHz
20
10p
100p
40
20
1n
10n
0
−50
−25
0
25
50
75
100
CFB (F)
Temperature (_C)
Figure 28.
Figure 29.
TPS73101
LOAD TRANSIENT, ADJUSTABLE VERSION
TPS73101
LINE TRANSIENT, ADJUSTABLE VERSION
CFB = 10nF
R1 = 39.2kΩ
COUT = 0µF
50mV/div
VOUT
COUT = 0µF
COUT = 10µF
50mV/div
VOUT = 2.5V
CFB = 10nF
100mV/div
COUT = 10µF
100mV/div
125
VOUT
VOUT
VOUT
4.5V
150mA
3.5V
VIN
10mA
25µs/div
Figure 30.
12
Submit Documentation Feedback
IOUT
5µs/div
Figure 31.
Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
APPLICATION INFORMATION
The TPS731xx belongs to a family of new generation
LDO regulators that use an NMOS pass transistor to
achieve ultra-low-dropout performance, reverse
current blockage, and freedom from output capacitor
constraints. These features, combined with low noise
and an enable input, make the TPS731xx ideal for
portable applications. This regulator family offers a
wide selection of fixed output voltage versions and an
adjustable output version. All versions have thermal
and over-current protection, including foldback
current limit.
Figure 32 shows the basic circuit connections for the
fixed voltage models. Figure 33 gives the connections
for the adjustable output version (TPS73101).
Optional input capacitor.
May improve source
impedance, noise, or PSRR.
VIN
Optional output capacitor.
May improve load transient,
noise, or PSRR.
IN
VOUT
OUT
TPS731xx
EN
GND
NR
Figure 32. Typical Application Circuit for
Fixed-Voltage Versions
VIN
Optional output capacitor.
May improve load transient
noise, or PSRR.
IN
EN
VOUT
OUT
TPS73101
GND
R1
CFB
FB
R2
VOUT =
(R1 + R2)
R2
x 1.204
Although an input capacitor is not required for
stability, it is good analog design practice to connect
a 0.1 μF to 1 μF low ESR capacitor across the input
supply near the regulator. This counteracts reactive
input sources and improves transient response, noise
rejection, and ripple rejection. A higher-value
capacitor may be necessary if large, fast rise-time
load transients are anticipated or the device is
located several inches from the power source.
The TPS731xx does not require an output capacitor
for stability and has maximum phase margin with no
capacitor. It is designed to be stable for all available
types and values of capacitors. In applications where
VIN – VOUT < 0.5 V and multiple low ESR capacitors
are in parallel, ringing may occur when the product of
COUT and total ESR drops below 50 nΩF. Total ESR
includes all parasitic resistances, including capacitor
ESR and board, socket, and solder joint resistance.
In most applications, the sum of capacitor ESR and
trace resistance will meet this requirement.
OUTPUT NOISE
Optional bypass
capacitor to reduce
output noise.
Optional input capacitor.
May improve source
impedance, noise, or PSRR.
INPUT AND OUTPUT CAPACITOR
REQUIREMENTS
Optional capacitor
reduces output noise
and improves
transient response.
Figure 33. Typical Application Circuit for
Adjustable-Voltage Versions
R1 and R2 can be calculated for any output voltage
using the formula shown in Figure 33. Sample
resistor values for common output voltages are
shown in Figure 3. For the best accuracy, make the
parallel combination of R1 and R2 approximately
19 kΩ.
A precision band-gap reference is used to generate
the internal reference voltage, VREF. This reference is
the dominant noise source within the TPS731xx and
it generates approximately 32 μVRMS (10 Hz to
100 kHz) at the reference output (NR). The regulator
control loop gains up the reference noise with the
same gain as the reference voltage, so that the noise
voltage of the regulator is approximately given by:
VOUT
(R1 ) R2)
V N + 32mVRMS
+ 32mVRMS
R2
VREF
(1)
Since the value of VREF is 1.2 V, this relationship
reduces to:
mV RMS
V N(mVRMS) + 27
V OUT(V)
V
(2)
ǒ
Ǔ
for the case of no CNR.
An internal 27 kΩ resistor in series with the noise
reduction pin (NR) forms a low-pass filter for the
voltage reference when an external noise reduction
capacitor, CNR, is connected from NR to ground. For
CNR = 10 nF, the total noise in the 10 Hz to 100 kHz
bandwidth is reduced by a factor of ~3.2, giving the
approximate relationship:
ǒmVV Ǔ
V N(mVRMS) + 8.5
RMS
V OUT(V)
(3)
for CNR = 10nF.
Copyright © 2006–2007, Texas Instruments Incorporated
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TPS73132-EP TPS73133-EP TPS73150-EP
13
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
www.ti.com
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
This noise reduction effect is shown as RMS Noise
Voltage vs CNR in the Typical Characteristics section.
The TPS73101 adjustable version does not have the
noise-reduction pin available. However, connecting a
feedback capacitor, CFB, from the output to the FB pin
reduces output noise and improves load transient
performance.
The TPS731xx uses an internal charge pump to
develop an internal supply voltage sufficient to drive
the gate of the NMOS pass element above VOUT. The
charge pump generates ~250 μV of switching noise
at ~4 MHz; however, charge-pump noise contribution
is negligible at the output of the regulator for most
values of IOUT and COUT.
DROPOUT VOLTAGE
The TPS731xx uses an NMOS pass transistor to
achieve extremely low dropout. When (VIN – VOUT) is
less than the dropout voltage (VDO), the NMOS pass
device is in its linear region of operation and the
input-to-output resistance is the RDS-ON of the NMOS
pass element.
For large step changes in load current, the TPS731xx
requires a larger voltage drop across it to avoid
degraded transient response. The boundary of this
transient dropout region is approximately twice the dc
dropout. Values of VIN – VOUT above this line ensure
normal transient response.
To improve ac performance such as PSRR, output
noise, and transient response, it is recommended that
the PCB be designed with separate ground planes for
VIN and VOUT, with each ground plane connected only
at the GND pin of the device. In addition, the ground
connection for the bypass capacitor should connect
directly to the GND pin of the device.
Operating in the transient dropout region can cause
an increase in recovery time. The time required to
recover from a load transient is a function of the
magnitude of the change in load current rate, the rate
of change in load current, and the available
headroom (VIN to VOUT voltage drop). Under
worst-case conditions (full-scale instantaneous load
change with (VIN – VOUT) close to dc dropout levels),
the TPS731xx can take a couple of hundred
microseconds to return to the specified regulation
accuracy.
INTERNAL CURRENT LIMIT
TRANSIENT RESPONSE
The TPS731xx internal current limit helps protect the
regulator during fault conditions. Foldback current
helps to protect the regulator from damage during
output short-circuit conditions by reducing current
limit when VOUT drops below 0.5 V. See Figure 12 in
the Typical Characteristics section for a graph of
IOUT vs VOUT.
The low open-loop output impedance provided by the
NMOS pass element in a voltage follower
configuration allows operation without an output
capacitor for many applications. As with any
regulator, the addition of a capacitor (nominal value
1 μF) from the output pin to ground reduces
undershoot magnitude but increases duration. In the
adjustable version, the addition of a capacitor, CFB,
from the output to the adjust pin also improves the
transient response.
BOARD LAYOUT RECOMMENDATION TO
IMPROVE PSRR AND NOISE PERFORMANCE
SHUTDOWN
The Enable pin is active high and is compatible with
standard TTL-CMOS levels. VEN below 0.5 V (max)
turns the regulator off and drops the ground pin
current to approximately 10 nA. When shutdown
capability is not required, the Enable pin can be
connected to VIN. When a pullup resistor is used and
operation down to 1.8 V is required, use pullup
resistor values below 50 kΩ.
The TPS731xx does not have active pulldown when
the output is overvoltage. This allows applications
that connect higher voltage sources, such as
alternate power supplies, to the output. This also
results in an output overshoot of several percent if the
load current quickly drops to zero when a capacitor is
connected to the output. The duration of overshoot
can be reduced by adding a load resistor. The
overshoot decays at a rate determined by output
capacitor COUT and the internal/external load
resistance. The rate of decay is given by:
(Fixed voltage version)
VOUT
dVńdt +
C OUT 80kW ø R LOAD
14
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(4)
Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
www.ti.com
(Adjustable voltage version)
V OUT
dVńdt +
C OUT 80kW ø (R 1 ) R 2) ø R LOAD
TPS73101-EP,, TPS73115-EP
TPS731125-EP, TPS73118-EP, TPS73125-EP, TPS73130-EP
TPS73132-EP, TPS73133-EP, TPS73150-EP
SGLS347A – JUNE 2006 – REVISED SEPTEMBER 2007
(5)
REVERSE CURRENT
The NMOS pass element of the TPS731xx provides
inherent protection against current flow from the
output of the regulator to the input when the gate of
the pass device is pulled low. To ensure that all
charge is removed from the gate of the pass element,
the enable pin must be driven low before the input
voltage is removed. If this is not done, the pass
element may be left on due to stored charge on the
gate.
After the enable pin is driven low, no bias voltage is
needed on any pin for reverse current blocking. Note
that reverse current is specified as the current flowing
out of the IN pin due to voltage applied on the OUT
pin. There is additional current flowing into the OUT
pin due to the 80-kΩ internal resistor divider to
ground (see Figure 2 and Figure 3).
For the TPS73101, reverse current may flow when
VFB is more than 1 V above VIN.
THERMAL PROTECTION
Thermal protection disables the output when the
junction temperature rises to approximately 160°C,
allowing the device to cool. When the junction
temperature cools to approximately 140°C, the output
circuitry is again enabled. Depending on power
dissipation, thermal resistance, and ambient
temperature, the thermal protection circuit may cycle
on and off. This limits the dissipation of the regulator,
protecting it from damage due to overheating.
Any tendency to activate the thermal protection circuit
indicates excessive power dissipation or an
inadequate heatsink. For reliable operation, junction
temperature should be limited to 125°C maximum. To
estimate the margin of safety in a complete design
(including
heatsink),
increase
the
ambient
temperature until the thermal protection is triggered;
use worst-case loads and signal conditions. For good
reliability, thermal protection should trigger at least
Copyright © 2006–2007, Texas Instruments Incorporated
35°C above the maximum expected ambient
condition of your application. This produces a
worst-case junction temperature of 125°C at the
highest
expected
ambient
temperature
and
worst-case load.
The internal protection circuitry of the TPS731xx has
been designed to protect against overload conditions.
It was not intended to replace proper heatsinking.
Continuously running the TPS731xx into thermal
shutdown will degrade device reliability.
POWER DISSIPATION
The ability to remove heat from the die is different for
each
package
type,
presenting
different
considerations in the PCB layout. The PCB area
around the device that is free of other components
moves the heat from the device to the ambient air.
Performance data for JEDEC low-K and high-K
boards are shown in the Power Dissipation Ratings
table. Using heavier copper increases the
effectiveness in removing heat from the device. The
addition of plated through-holes to heat-dissipating
layers also improves the heatsink effectiveness.
Power dissipation depends on input voltage and load
conditions. Power dissipation is equal to the product
of the output current times the voltage drop across
the output pass element (VIN to VOUT):
PD = (VIN – VOUT) × IOUT
Power dissipation can be minimized by using the
lowest possible input voltage necessary to ensure the
required output voltage.
Package Mounting
Solder pad footprint recommendations for the
TPS731xx are presented in Application Bulletin
Solder Pad Recommendations for Surface-Mount
Devices (AB-132), available from the Texas
Instruments web site at www.ti.com.
Submit Documentation Feedback
Product Folder Link(s): TPS73101-EP TPS73115-EP TPS731125-EP TPS73118-EP TPS73125-EP TPS73130-EP
TPS73132-EP TPS73133-EP TPS73150-EP
15
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
TPS73101MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKAM
TPS731125MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PMMM
TPS73115MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKBM
TPS73118MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKCM
TPS73125MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKDM
TPS73130MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKEM
TPS73132MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKFM
TPS73133MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKHM
TPS73150MDBVREP
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKIM
V62/06652-01XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKAM
V62/06652-02XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKBM
V62/06652-03XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKCM
V62/06652-04XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKDM
V62/06652-05XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKEM
V62/06652-06XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKFM
V62/06652-07XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKHM
V62/06652-08XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PKIM
V62/06652-09XE
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-55 to 125
PMMM
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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