Product
Folder
Sample &
Buy
Support &
Community
Tools &
Software
Technical
Documents
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
TPS715 50-mA, 24-V, 3.2-μA Supply Current Low-Dropout Linear Regulator
in SC70 Package
1 Features
3 Description
•
•
•
•
•
The TPS715 low-dropout (LDO) voltage regulators
offer the benefits of high input voltage, low-dropout
voltage, low-power operation, and miniaturized
packaging. The devices, which operate over an input
range of 2.5 V to 24 V, are stable with any capacitor
greater than or equal to 0.47 μF. The low dropout
voltage and low quiescent current allow operation at
extremely low power levels. Therefore, the devices
are ideal for powering battery management ICs.
Specifically, because the devices are enabled as
soon as the applied voltage reaches the minimum
input voltage, the output is quickly available to power
continuously operating battery charging ICs.
1
•
•
•
•
•
24-V Maximum Input Voltage
Low 3.2-μA Quiescent Current at 50 mA
Stable With Any Capacitor ≥ 0.47 μF
50-mA Low-Dropout Regulator
Available in 1.8 V, 1.9 V, 2.3 V, 2.5 V, 3 V,
3.3 V, 3.45 V, 5 V, and
Adjustable (1.2 V to 15 V)
Designed to Support MSP430 Families:
– 1.9-V Version Ensured to be Higher Than
Minimum VIN of 1.8 V
– 2.3-V Version Ensured to Meet 2.2-V Minimum
VIN for Flash on MSP430F2xx
– 3.45-V Version Ensured to be Lower Than
Maximum VIN of 3.6 V
– Wide Variety of Fixed-Output Voltage Options
to Match VIN to the Minimum Required for
Desired MSP430 Speed
Minimum and Maximum Specified Current Limit
5-Pin SC70 (DCK)
–40°C to +125°C Specified Junction
Temperature Range
For 80-mA Rated Current and Higher Power
Package, see TPS715A
The usual PNP pass transistor has been replaced by
a PMOS pass element. Because the PMOS pass
element behaves as a low-value resistor, the low
dropout voltage, typically 415 mV at 50 mA of load
current, is directly proportional to the load current.
The low quiescent current (3.2 µA typically) is stable
over the entire range of output load current (0 mA to
50 mA).
Device Information(1)
PART NUMBER
TPS715
PACKAGE
SC70 (5)
BODY SIZE (NOM)
2.00 mm × 1.25 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
•
•
•
Ultralow Power Microcontrollers
Cellular and Cordless Handsets
Portable and Battery-Powered Equipment
Typical Application Schematic
TPS715xx
IN
Solar
Cell
OUT
MSP430
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
4
6.1
6.2
6.3
6.4
6.5
6.6
4
4
4
4
5
6
Absolute Maximum Ratings .....................................
ESD Ratings ............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Typical Characteristics ..............................................
Detailed Description .............................................. 8
7.1
7.2
7.3
7.4
Overview ...................................................................
Functional Block Diagrams .......................................
Feature Description...................................................
Device Functional Modes..........................................
8
8
8
9
8
Application and Implementation ........................ 10
8.1 Application Information............................................ 10
8.2 Typical Application .................................................. 10
8.3 Do's and Don'ts ....................................................... 12
9 Power Supply Recommendations...................... 12
10 Layout................................................................... 13
10.1 Layout Guidelines ................................................. 13
10.2 Layout Example .................................................... 13
10.3 Power Dissipation ................................................. 13
11 Device and Documentation Support ................. 14
11.1
11.2
11.3
11.4
11.5
Device Support......................................................
Documentation Support .......................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
14
14
14
14
14
12 Mechanical, Packaging, and Orderable
Information ........................................................... 14
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision Q (January 2014) to Revision R
Page
•
Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
•
Changed front-page figure ..................................................................................................................................................... 1
•
Changed Pin Configuration and Functions section; updated table format ............................................................................ 3
•
Deleted Continuous total power dissipation row in Absolute Maximum Ratings.................................................................... 4
Changes from Revision P (November 2008) to Revision Q
•
2
Page
Changed test condition for VOUT accuracy parameter ............................................................................................................ 5
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
TPS715
www.ti.com
SLVS338R – MAY 2001 – REVISED APRIL 2015
5 Pin Configuration and Functions
DCK PACKAGE
5-Pin SC70
Top View
FB/NC
1
GND
2
NC
3
5
OUT
4
IN
Pin Functions
PIN
NAME
SC70
I/O
DESCRIPTION
FIXED
ADJUSTABLE
FB
—
1
I
GND
2
2
—
IN
4
4
I
NC
1, 3
3
—
No connection
5
5
O
Output of the regulator. Any output capacitor ≥ 0.47 μF can be used for stability.
OUT
Adjustable version only. This terminal is used to set the output voltage.
Ground
Input supply
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
3
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
www.ti.com
6 Specifications
6.1 Absolute Maximum Ratings
Over operating temperature range (unless otherwise noted). (1) (2)
Voltage
MIN
MAX
VIN
–0.3
24
VOUT
–0.3
16.5
Peak output current
Temperature
(1)
(2)
UNIT
V
Internally limited
Junction, TJ
–40
150
Storage, Tstg
–65
150
°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values are with respect to network ground terminal.
6.2 ESD Ratings
VALUE
Electrostatic
discharge
V(ESD)
(1)
(2)
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins (1)
±2000
Charged device model (CDM), per JEDEC specification JESD22-C101, all
pins (2)
±500
UNIT
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
VIN
Input supply voltage
IOUT
NOM
MAX
UNIT
2.5
24
V
Output current
0
50
mA
CIN
Input capacitor
0
0.047
µF
COUT
Output capacitor
0.47
1
µF
6.4 Thermal Information
TPS715
THERMAL METRIC (1)
DCK [SC70]
UNIT
5 PINS
RθJA
Junction-to-ambient thermal resistance
253.8
RθJC(top)
Junction-to-case (top) thermal resistance
73.7
RθJB
Junction-to-board thermal resistance
84.6
ψJT
Junction-to-top characterization parameter
1.1
ψJB
Junction-to-board characterization parameter
83.9
(1)
4
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
TPS715
www.ti.com
SLVS338R – MAY 2001 – REVISED APRIL 2015
6.5 Electrical Characteristics
Over operating junction temperature range (TJ = –40°C to 125°C), VIN = VOUT(nom) + 1 V, IOUT = 1 mA, and COUT = 1 μF, unless
otherwise noted. Typical values are at TJ = 25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
2.5
24
IO = 50 mA
3
24
1.2
15
–4%
4%
VIN
Input voltage (1)
VOUT
Output voltage
(TPS71501)
VOUT
Accuracy (1)
IGND
Ground pin current (2)
ΔVOUT(ΔIOUT)
Load regulation
IOUT = 100 μA to 50 mA
22
ΔVOUT(ΔVIN)
Output voltage line
regulation (1)
VOUT + 1 V < VIN ≤ 24 V
20
Vn
Output noise voltage
BW = 200 Hz to 100 kHz, COUT = 10 μF,
IOUT = 50 mA
ICL
Output current limit
PSRR
Power-supply ripple
rejection
f = 100 kHz, COUT = 10 μF
VDO
Dropout voltage
VIN = VOUT(nom) – 0.1 V
IOUT = 50 mA
Over VIN,
IOUT, and T
VOUT + 1 V ≤ VIN ≤ 24 V
100 μA ≤ IOUT ≤ 50 mA
0 ≤ IOUT ≤ 50 mA, TJ = –40°C to 85°C
3.2
4.2
0 mA ≤ IOUT ≤ 50 mA
3.2
4.8
0 mA ≤ IOUT ≤ 50 mA, VIN = 24 V
(1)
(2)
MAX
IO = 10 mA
UNIT
V
V
μA
5.8
mV
60
mV
μVrms
575
VOUT = 0 V, VIN ≥ 3.5 V
125
750
mA
VOUT = 0 V, VIN < 3.5 V
90
750
mA
60
415
dB
750
mV
Minimum VIN = VOUT + VDO or the value shown for Input voltage in this table, whichever is greater.
See Figure 10. The TPS715 family employs a leakage null control circuit. This circuit is active only if output current is less than pass
FET leakage current. The circuit is typically active when output load is less than 5 μA, VIN is greater than 18 V, and die temperature is
greater than 100°C.
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
5
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
www.ti.com
6.6 Typical Characteristics
3.32
3.320
VIN = 4.3 V
COUT = 1 mF
TJ = 25°C
3.31
VOUT − Output Voltage − V
VOUT − Output Voltage − V
3.315
3.310
3.305
3.300
3.295
10
20
30
40
50
IO − Output Current − mA
Figure 1. Output Voltage vs Output Current
IOUT = 50 mA
3.29
3.28
3.27
VIN = 4.3 V
COUT = 1 mF
3.26
Figure 2. Output Voltage vs Junction Temperature
4.5
Hz
8
VIN = 4.3 V
VOUT = 3.3 V
IOUT = 1 mF
7
Output Spectral Noise Density −
6
3.5
3
2.5
2
−40 −25 −10 5
20 35 50 65 80 95 110 125
5
IOUT = 50 mA
4
3
2
1
0
100
TJ − Junction Temperature − °C
Figure 3. Quiescent Current vs Junction Temperature
100 k
600
14
V DO − Dropout Voltage − mV
VIN = 4.3 V
VOUT = 3.3 V
COUT = 1 mF
TJ = 25°C
16
Zo − Output Impedance − W
1k
10 k
f − Frequency − Hz
Figure 4. Output Spectral Noise Density vs Frequency
18
12
10
8
6
IOUT = 1 mA
4
2
0
VIN = 3.2 V
COUT = 1 mF
500
TJ = 125°C
400
TJ = 25°C
300
200
TJ = −40°C
100
IOUT = 50 mA
10
6
VIN = 4.3 V
VOUT = 3.3 V
COUT = 1 mF
IOUT = 1 mA
m V/
4
IGND − Ground Current − mA
3.30
3.25
−40 −25 −10 5 20 35 50 65 80 95 110 125
TJ − Junction Temperature − °C
3.290
0
IOUT = 1 mA
100
1k
10k
100k
1M
0
10 M
f − Frequency − Hz
0
10
20
30
40
IOUT − Output Current − mA
Figure 5. Output Impendence vs Frequency
Figure 6. Dropout Voltage vs Output Current
Submit Documentation Feedback
50
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
TPS715
www.ti.com
SLVS338R – MAY 2001 – REVISED APRIL 2015
Typical Characteristics (continued)
1
600
IOUT = 50 mA
VIN = 3.2 V
V DO − Dropout Voltage − V
0.8
V DO − Dropout Voltage − mV
0.9
TJ = 125°C
0.7
TJ = 25°C
0.6
0.5
0.4
TJ = −40°C
0.3
0.2
500
IOUT = 50 mA
400
300
200
IOUT = 10 mA
100
0.1
0
−40 −25 −10 5 20 35 50 65 80 95 110 125
0
0
3
6
9
12
15
TJ − Junction Temperature − °C
Figure 7. TPS71501 Dropout Voltage vs Input Voltage
Figure 8. Dropout Voltage vs Junction Temperature
PSRR − Power Supply Ripple Rejection − dB
VIN − Input Voltage − V
100
VIN = 4.3 V
VOUT = 3.3 V
COUT = 10 mF
TJ = 25°C
90
80
70
60
IOUT = 1 mA
50
40
30
20
IOUT = 50 mA
10
0
10
100
1k
10k
100k
1M
10 M
f − Frequency − Hz
Figure 9. Power Supply Ripple Rejection vs Frequency
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
7
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
www.ti.com
7 Detailed Description
7.1 Overview
The TPS715 family of LDOs consume only 3.2 µA of current while offering a wide input voltage range and lowdropout voltage in a small package. The devices, which operate over an input range of 2.5 V to 24 V, are stable
with any capacitor greater than or equal to 0.47 μF. The low quiescent current makes the TPS715 ideal for
powering battery management ICs. Specifically, because the TPS715 is enabled as soon as the applied voltage
reaches the minimum input voltage, the output is quickly available to power continuously operating battery
charging ICs.
7.2 Functional Block Diagrams
V(OUT)
V(IN)
Current
Sense
Leakage Null
Control Circuit
ILIM
_
GND
R1
+
FB
Bandgap
Reference
R2
Vref = 1.205 V
Figure 10. Functional Block Diagram—Adjustable Version
V(OUT)
V(IN)
Current
Sense
Leakage Null
Control Circuit
ILIM
_
GND
Bandgap
Reference
R1
+
Vref = 1.205 V
R2
Figure 11. Functional Block Diagram—Fixed Version
7.3 Feature Description
7.3.1 Wide Supply Range
This device has an operational input supply range of 2.5 V to 24 V, allowing for a wide range of applications. This
wide supply range is ideal for applications that have either large transients or high DC voltage supplies.
7.3.2 Low Supply Current
This device only requires 3.2 µA (typical) of supply current from –40°C to 85°C and has a maximum current
consumption of 5.8 µA at –40°C to 125°C.
7.3.3 Stable With Any Capacitor ≥ 0.47 µF
Any capacitor, including both ceramic and tantalum, greater than or equal to 0.47 μF properly stabilizes this loop.
8
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
TPS715
www.ti.com
SLVS338R – MAY 2001 – REVISED APRIL 2015
Feature Description (continued)
7.3.4 Internal Current Limit
The internal current limit circuit is used to protect the LDO against high-load current faults or shorting events. The
LDO is not designed to operate in a steady-state current limit. During a current limit event, the LDO sources
constant current. Therefore, the output voltage falls when load impedance decreases.
NOTE
if a current limit occurs and the resulting output voltage is low, excessive power is
dissipated across the LDO, resulting in possible damage to the device.
7.3.5 Reverse Current
The TPS715 PMOS-pass transistor has a built-in back diode that conducts current when the input voltage drops
below the output voltage (for example, during power down). Current is conducted from the output to the input and
is not internally limited. If extended reverse voltage operation is anticipated, external limiting may be required.
7.4 Device Functional Modes
Table 1 provides a quick comparison between the normal, dropout, and disabled modes of operation.
Table 1. Device Functional Mode Comparison
OPERATING MODE
PARAMETER
VIN
IOUT
Normal
VIN > VOUT(nom) + VDO
IOUT < ICL
Dropout
VIN < VOUT(nom) + VDO
IOUT < ICL
Disabled
—
—
7.4.1 Normal Operation
The device regulates to the nominal output voltage under the following conditions:
• The input voltage is greater than the nominal output voltage plus the dropout voltage (VOUT(nom) + VDO).
• The output current is less than the current limit (IOUT < ICL).
• The device junction temperature is less than 125°C.
7.4.2 Dropout Operation
If the input voltage is lower than the nominal output voltage plus the specified dropout voltage, but all other
conditions are met for normal operation, the device operates in dropout mode. In this mode, the output voltage
tracks the input voltage. During this mode, the transient performance of the device becomes significantly
degraded because the pass device is in the linear region and no longer controls the current through the LDO.
Line or load transients in dropout can result in large output-voltage deviations.
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
9
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
www.ti.com
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The TPS715 family of LDO regulators has been optimized for ultralow-power applications such as the MSP430
microcontroller. The ultralow-supply current of the TPS715 device maximizes efficiency at light loads, and its high
input voltage range makes it suitable for supplies such as unconditioned solar panels.
8.2 Typical Application
VIN
IN
C1
0.1 mF
TPS71533
OUT
GND
VOUT
0.47 mF
Figure 12. Typical Application Circuit (Fixed-Voltage Version)
OUTPUT VOLTAGE
PROGRAMMING GUIDE
VIN
IN
VOUT
OUT
TPS71501
R1
0.1mF
GND
CFB
0.47mF
FB
R2
R1 ö
æ
VOUT = VREF ´ ç 1 +
÷
è R2 ø
OUTPUT
VOLTAGE
R1
R2
1.8 V
0.499 MW
1 MW
2.8 V
1.33 MW
1 MW
5.0 V
3.16 MW
1 MW
Figure 13. TPS71501 Adjustable LDO Regulator Programming
8.2.1 Design Requirements
8.2.1.1 Power the MSP430 Microcontroller
Several versions of the TPS715 are ideal for powering the MSP430 microcontroller. Table 2 shows potential
applications of some voltage versions.
Table 2. Typical MSP430 Applications
DEVICE
VOUT (TYP)
TPS71519
1.9 V
APPLICATION
VOUT(min) > 1.8 V required by many MSP430s. Allows lowest power consumption operation.
TPS71523
2.3 V
VOUT(min) > 2.2 V required by some MSP430s flash operation.
TPS71530
3V
VOUT(min) > 2.7 V required by some MSP430s Flash operation.
TPS715345
3.45 V
VOUT(max) < 3.6 V required by some MSP430s. Allows highest speed operation.
The TPS715 family offers many output voltage versions to allow designers to optimize the supply voltage for the
MSP430, thereby minimizing the supply current consumed by the MSP430.
10
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
TPS715
www.ti.com
SLVS338R – MAY 2001 – REVISED APRIL 2015
8.2.2 Detailed Design Procedure
8.2.2.1 External Capacitor Requirements
Although not required, a 0.047-μF or larger input bypass capacitor, connected between IN and GND and located
close to the device, is recommended to improve transient response and noise rejection of the power supply as a
whole. A higher-value input capacitor may be necessary if large, fast-rise-time load transients are anticipated and
the device is located several inches from the power source.
The TPS715 requires an output capacitor connected between OUT and GND to stabilize the internal control loop.
Any capacitor (including ceramic and tantalum) greater than or equal to 0.47 μF properly stabilizes this loop. X7R
or X5R type capacitors are recommended due to their wider temperature spec and lower temperature coefficient,
but other types of capacitors may be used.
8.2.2.2 Dropout Voltage (VDO)
Generally speaking, the dropout voltage often refers to the voltage difference between the input and output
voltage (VDO = VIN – VOUT). However, in the Electrical Characteristics, VDO is defined as the VIN – VOUT voltage at
the rated current, where the pass-FET is fully on in the ohmic region of operation and is characterized by the
classic RDS(on) of the FET. VDO indirectly specifies a minimum input voltage above the nominal programmed
output voltage at which the output voltage is expected to remain within its accuracy boundary. If the input falls
below this VDO limit (VIN < VOUT + VDO), then the output voltage decreases in order to follow the input voltage.
Dropout voltage is always determined by the RDS(on) of the main pass-FET. Therefore, if the LDO operates below
the rated current, then the VDO for that current scales accordingly. RDS(on) can be calculated using Equation 1:
VDO
RDS(ON) =
IRATED
(1)
8.2.2.3 Setting VOUT for the TPS71501 Adjustable LDO
The TPS715 family contains an adjustable-version, TPS71501, which sets the output voltage using an external
resistor divider as shown in Figure 13. The output voltage operating range is 1.2 V to 15 V, and is calculated
using:
R1 ö
æ
VOUT = VREF ´ ç 1 +
÷
è R2 ø
where
•
VREF = 1.205 V (typical)
(2)
Resistors R1 and R2 should be chosen to allow approximately 1.5-μA of current through the resistor divider.
Lower value resistors can be used for improved noise performance, but will consume more power. Higher
resistor values should be avoided as leakage current into or out of FB across R1/R2 creates an offset voltage
that is proportional to VOUT divided by VREF. The recommended design procedure is to choose R2 = 1 MΩ to set
the divider current at 1.5 μA, and then calculate R1 using Equation 3:
æV
ö
R1 = ç OUT - 1÷ ´ 2
V
è REF
ø
(3)
Figure 13 shows this configuration.
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
11
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
www.ti.com
8.2.3 Application Curves
VIN − Input Voltage − V
6
5
4
3
VIN
2
VOUT
1
0
0
2
4
6
8 10 12 14
t − Time − ms
16 18
20
VIN − Input Voltage − V
VOUT = 3.3 V
RL = 66 W
COUT = 10 mF
7
VOUT − Output Voltage − V
∆VOUT − Change in
Output Voltage − mV
8
50
0
−50
5.3
4.3
DVOUT - Change in
Output Voltage - mV
Figure 14. Power Up and Power Down
IOUT - Output Current - mA
VOUT = 3.3 V
IOUT = 50 mA
COUT = 10 mF
100
0
50 100 150 200 250 300 350 400 450 500
t − Time − ms
Figure 15. Line Transient Response
VIN = 4.3 V
VOUT = 3.3 V
COUT = 10 mF
400
200
0
-200
60
40
20
0
0 100 200 300 400 500 600 700 800 900 1000
ms
t − Time −
Figure 16. Load Transient Response
8.3 Do's and Don'ts
Place at least one 0.47-µF capacitor as close as possible to the OUT and GND terminals of the regulator.
Do not connect the output capacitor to the regulator using a long, thin trace.
Connect an input capacitor as close as possible to the IN and GND terminals of the regulator for best
performance.
Do not exceed the absolute maximum ratings.
9 Power Supply Recommendations
The TPS715 is designed to operate from an input voltage supply range between 2.5 V and 24 V. The input
voltage range provides adequate headroom in order for the device to have a regulated output. This input supply
must be well regulated. If the input supply is noisy, additional input capacitors with low ESR can help improve the
output noise performance.
12
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
TPS715
www.ti.com
SLVS338R – MAY 2001 – REVISED APRIL 2015
10 Layout
10.1 Layout Guidelines
For best overall performance, place all circuit components on the same side of the printed-circuit-board and as
near as practical to the respective LDO pin connections. Place ground return connections for the input and output
capacitors as close to the GND pin as possible, using wide, component-side, copper planes. TI strongly
discourages using vias and long traces to create LDO circuit connections to the input capacitor, output capacitor,
or the resistor divider because that will negatively affect system performance. This grounding and layout scheme
minimizes inductive parasitics, and thereby reduces load-current transients, minimizes noise, and increases
circuit stability. A ground reference plane is also recommended and is either embedded in the PCB itself or
located on the bottom side of the PCB opposite the components. This reference plane serves to assure accuracy
of the output voltage and shield the LDO from noise.
10.2 Layout Example
GND
R2
NC
CIN
VIN
GND
FB
TPS71501DCK
IN
R1
OUT
COUT
GND
VOUT
Figure 17. Example Layout for TPS71501DCK
10.3 Power Dissipation
To ensure reliable operation, worst-case junction temperature should not exceed 125°C. This restriction limits the
power dissipation the regulator can handle in any given application. To ensure the junction temperature is within
acceptable limits, calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which
must be less than or equal to PD(max).
The maximum-power-dissipation limit is determined using Equation 4:
T max - TA
PD(max) = J
RqJA
where
•
•
•
TJmax is the maximum allowable junction temperature
RθJA is the thermal resistance junction-to-ambient for the package (see the Thermal Information table)
TA is the ambient temperature
The regulator dissipation is calculated using Equation 5:
PD = (VIN - VOUT ) ´ IOUT
(4)
(5)
For a higher power package version of the TPS715, see the TPS715A.
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
13
TPS715
SLVS338R – MAY 2001 – REVISED APRIL 2015
www.ti.com
11 Device and Documentation Support
11.1 Device Support
11.1.1 Development Support
11.1.1.1 Evaluation Module
An evaluation module (EVM) is available to assist in the initial circuit performance evaluation using the TPS715.
The TPS71533EVM evaluation module (and related user's guide) can be requested at the TI website through the
product folders or purchased directly from the TI eStore.
11.1.1.2 Spice Models
Computer simulation of circuit performance using SPICE is often useful when analyzing the performance of
analog circuits and systems. A SPICE model for the TPS715 is available through the product folders under Tools
& Software.
11.1.2 Device Nomenclature
Table 3. Device Nomenclature (1)
VOUT (2)
PRODUCT
TPS715xx yyy z
(1)
(2)
XX is nominal output voltage (for example, 28 = 2.8 V, 285 = 2.85 V, 01 = Adjustable).
YYY is package designator.
Z is package quantity.
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.
Output voltages from 1.25 V to 5.4 V in 50-mV increments are available through the use of innovative factory EEPROM programming;
minimum order quantities may apply. Contact factory for details and availability.
11.2 Documentation Support
11.2.1 Related Documentation
For related documentation see the following:
• TPS71533EVM LDO Evaluation Module User Guide, SLVU061
• TPS735: High Input Voltage, Micropower SON-Packaged, 80-mA LDO Linear Regulators, SBVS047
11.3 Trademarks
All trademarks are the property of their respective owners.
11.4 Electrostatic Discharge Caution
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.
11.5 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
12 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
14
Submit Documentation Feedback
Copyright © 2001–2015, Texas Instruments Incorporated
Product Folder Links: TPS715
PACKAGE OPTION ADDENDUM
www.ti.com
13-Aug-2021
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)
HPA00328DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 85
AQI
HPA00423DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
ARB
HPA00681DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
ARB
TPS71501DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green NIPDAU | NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
ARB
TPS71501DCKRG4
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
ARB
TPS71518DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
ARD
TPS71518DCKRG4
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
ARD
TPS71519DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
BOX
TPS71523DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green NIPDAU | NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
BNX
TPS71525DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green NIPDAU | NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
AQL
TPS71525DCKRG4
ACTIVE
SC70
DCK
5
3000
RoHS & Green
Level-1-260C-UNLIM
-40 to 125
AQL
TPS71530DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green NIPDAU | NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
AQM
TPS71530DCKRG4
ACTIVE
SC70
DCK
5
3000
RoHS & Green
Level-1-260C-UNLIM
-40 to 125
AQM
TPS71533DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green NIPDAU | NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
AQI
TPS71533DCKRG4
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
AQI
TPS715345DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green
NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
BNY
TPS71550DCKR
ACTIVE
SC70
DCK
5
3000
RoHS & Green NIPDAU | NIPDAUAG
Level-1-260C-UNLIM
-40 to 125
T48
TPS71550DCKRG4
ACTIVE
SC70
DCK
5
3000
RoHS & Green
Level-1-260C-UNLIM
-40 to 125
T48
(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
NIPDAUAG
NIPDAUAG
NIPDAUAG
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
13-Aug-2021
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
工商网监
湘ICP备2023018690号
