TPS781 Regulator Datasheet

TPS781 Datasheet, PDF, Equivalent


Part Number

TPS781

Description

150mA Low-Dropout Regulator

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download TPS781 Datasheet


TPS781
TPS781 Series
www.ti.com ........................................................................................................................................................... SBVS102B – MARCH 2008 – REVISED MAY 2008
150mA, Low-Dropout Regulator, Ultralow-Power, IQ 1µA
with Pin-Selectable, Dual-Level Output Voltage
FEATURES
1
2 Low IQ: 1µA
150mA, Low-Dropout Regulator with
Pin-Selectable Dual Voltage Level Output
Low Dropout: 200mV at 150mA
3% Accuracy Over Load/Line/Temperature
Available in Dual-Level, Fixed Output Voltages
from 1.5V to 4.2V Using Innovative Factory
EPROM Programming
Available in an Adjustable Version from 1.22V
to 5.25V or a Dual-Level Output Version
VSET Pin Toggles Output Voltage Between Two
Factory-Programmed Voltage Levels
Stable with a 1.0µF Ceramic Capacitor
Thermal Shutdown and Overcurrent Protection
CMOS Logic Level-Compatible Enable Pin
Available in DDC (TSOT23-5) or DRV (2mm ×
2mm SON-6) Package Options
APPLICATIONS
TI MSP430 Attach Applications
Power Rails with Programming Mode
Dual Voltage Levels for Power-Saving Mode
Wireless Handsets, Smartphones, PDAs, MP3
Players, and Other Battery-Operated Handheld
Products
DESCRIPTION
The TPS781 family of low-dropout (LDO) regulators
offer the benefits of ultralow power (IQ = 1µA),
miniaturized packaging (2×2 SON-6), and selectable
dual-level output voltage levels. An adjustable version
is also available, but does not have the capability to
shift voltage levels.
TPS781DDC
TSOT23-5
(TOP VIEW)
IN
GND
EN
1
2
3
5 OUT
4 VSET/FB
The VSET pin allows the end user to switch between
two voltage levels on-the-fly through a
microprocessor-compatible input. This LDO is
designed specifically for battery-powered applications
where dual-level voltages are needed. With ultralow
IQ (1µA), microprocessors, memory cards, and smoke
detectors are ideal applications for this device.
The ultralow-power and selectable dual-level output
voltages allow designers to customize power
consumption for specific applications. Designers can
now shift to a lower voltage level in a battery-powered
design when the microprocessor is in sleep mode,
further reducing overall system power consumption.
The two voltage levels are preset at the factory
through a unique architecture using an EPROM. The
EPROM technique allows for numerous output
voltage options between VSET low (1.5V to 4.2V) and
VSET high (2.0V to 3.0V) in the fixed output version
only. Consult with your local factory representative for
exact voltage options and ordering information;
minimum order quantities may apply.
The TPS781 series are designed to be compatible
with the TI MSP430 and other similar products. The
enable pin is compatible with standard CMOS logic.
This LDO is stable with any output capacitor greater
than 1.0µF. Therefore, implementations of this device
require minimal board space because of miniaturized
packaging and a potentially small output capacitor.
The TPS781 series IQ (1µA) also come with thermal
shutdown and current limit to protect the device
during fault conditions. All packages have an
operating temperature range of TJ = –40°C to
+125°C. For high-performance applications requiring
a dual-level voltage option, consider the TPS780
series, with an IQ of 500nA and dynamic voltage
scaling.
TPS781DRV
2mm x 2mm SON-6
(TOP VIEW)
OUT 1
6 IN
N/C
2
Thermal
Pad
5
GND
VSET/FB 3
4 EN
1
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.
2
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 © 2008, Texas Instruments Incorporated

TPS781
TPS781 Series
SBVS102B – MARCH 2008 – REVISED MAY 2008 ........................................................................................................................................................... www.ti.com
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.
ORDERING INFORMATION(1)(2)
PRODUCT
TPS781vvvxxxyyyz
VOUT
VVV is the nominal output voltage for VOUT(HIGH) and corresponds to VSET pin low.
XXX is the nominal output voltage for VOUT(LOW) and corresponds to VSET pin high.
YYY is the package designator.
Z is the tape and reel quantity (R = 3000, T = 250).
Adjustable version(3)(4)
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Additional output voltage combinations are available on a quick-turn basis using innovative, factory EPROM programming.
Minimum-order quantities apply; contact your sales representative for details and availability.
(3) To order the adjustable version, use TPS78101YYYZ.
(4) The device is either fixed voltage, dual-level VOUT, or adjustable voltage only. Device design does not permit a fixed and adjustable
output simultaneously.
ABSOLUTE MAXIMUM RATINGS(1)
At TJ = –40°C to +125°C, unless otherwise noted. All voltages are with respect to GND.
PARAMETER
Input voltage range, VIN
Enable and VSET voltage range, VEN and VVSET
Output voltage range, VOUT
Maximum output current, IOUT
Output short-circuit duration
Total continuous power dissipation, PDISS
ESD rating
Human body model (HBM)
Charged device model (CDM)
Operating junction temperature range, TJ
Storage temperature range, TSTG
TPS781 Series
UNIT
–0.3 to +6.0
–0.3 to VIN + 0.3(2)
–0.3 to VIN + 0.3V
Internally limited
V
V
V
Indefinite
See the Dissipation Ratings table
2 kV
500 V
–40 to +125
°C
–55 to +150
°C
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
(2) VEN and VVSET absolute maximum rating are VIN + 0.3V or +6.0V, whichever is less.
DISSIPATION RATINGS
BOARD
High-K (1)
High-K (1)
PACKAGE
DRV
DDC
RθJC
20°C/W
90°C/W
RθJA
65°C/W
200°C/W
DERATING FACTOR
ABOVE TA = +25°C
15.4mW/°C
5.0mW/°C
TA < +25°C
1540mW
500mW
TA = +70°C
845mW
275mW
TA = +85°C
615mW
200mW
(1) The JEDEC high-K (2s2p) board 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 top and bottom of the board.
2 Submit Documentation Feedback
Copyright © 2008, Texas Instruments Incorporated


Features TPS781 Series www.ti.com .............. ....................................... ....................................... ....................................... ........................ SBVS102B – M ARCH 2008 – REVISED MAY 2008 150mA, L ow-Dropout Regulator, Ultralow-Power, I Q 1µA with Pin-Selectable, Dual-Level Output Voltage FEATURES 1 •2 Low IQ: 1µA • 150mA, Low-Dropout Regulator with Pin-Selectable Dual Voltage Level Output • Low Dropout: 200mV at 150mA • 3% Accuracy Over Load/Line/Temperat ure • Available in Dual-Level, Fixed Output Voltages from 1.5V to 4.2V Using Innovative Factory EPROM Programming Available in an Adjustable Version f rom 1.22V to 5.25V or a Dual-Level Outp ut Version • VSET Pin Toggles Output Voltage Between Two Factory-Programmed Voltage Levels • Stable with a 1.0µF Ceramic Capacitor • Thermal Shutdown and Overcurrent Protection • CMOS Lo gic Level-Compatible Enable Pin • Ava ilable in DDC (TSOT23-5) or DRV (2mm × 2mm SON-6) Package Options APPLICATIONS • TI MSP430 .
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