INTEGRATED LDO. TPS51103 Datasheet

TPS51103 LDO. Datasheet pdf. Equivalent

Part TPS51103
Description INTEGRATED LDO
Feature TPS51103 www.ti.com ................................................................................
Manufacture etcTI
Datasheet
Download TPS51103 Datasheet



TPS51103
TPS51103
www.ti.com ...................................................................................................................................................................................................... SLUS808 – JUNE 2008
INTEGRATED LDO WITH SWITCHOVER CIRCUIT FOR NOTEBOOK COMPUTERS
FEATURES
1
Wide Input Voltage Range: 4.5 V to 28 V
5-V/3.3-V, 100-mA, LDO Output
Glitch Free Switch Over Circuit
Always-On 3.3-V, 5-mA LDO Output for RTC
250 kHz Clock Output for Charge Pump
Thermal Shutdown (Non-latch)
10Ld QFN (DRC) Package
APPLICATIONS
Notebook Computers
Mobile Digital Consumer Products
TYPICAL APPLICATION CIRCUIT
DESCRIPTION
The TPS51103 integrates three LDOs. The 5-V and
3.3-V LDOs are both rated at 100 mA and also
include a glitch-free switch-over feature allowing for
optimized battery life. An additional 3.3-V LDO is
designed to provide an always on power output for
the real time clock (RTC). The TPS51103 integrates
a clock output to use with an external charge pump.
The TPS51103 offers an innovative solution for
optimizing the complex and multiple power rails
typically found in a Notebook Computer. The
TPS51103 is available in the 10-pin QFN package
and is specified from –40°C to 85°C.
A2
V15
C2
C8
1 mF
AC1
C5
0.1 mF
AC2
C1
A1
5V_IN
C4 C6 C7
0.1 mF 0.1 mF 0.1 mF
TPS51103DRC
1 VCLK
V5IN 10
2 GND
VREG5 9
3.3 V/5 mA
3 VRTC3
VIN 8
EN5
4 EN5
VREG3 7
5 EN3
EN3
C3
1 mF
V3IN 6
5V_IN
5 V/100 mA
VIN
(4.5 V to 28 V
3.3 V/100 mA
3.3V_IN
C2 C1 C0
10 mF 10 mF 10 mF
UDG-08017
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.
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



TPS51103
TPS51103
SLUS808 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com
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.
ORDERING INFORMATION
TA
–40°C to 85°C
PACKAGE
Plastic DRC(1)
PART NUMBER
TPS51103DRCT
TPS51103DRCR
TAPE & REEL
QUANTITY
250
3000
ECO-PLAN
Green (RoHS and No
Sb/Br)
(1) For the most current package and ordering information, seet he Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted) (1)
Input voltage range(2)
Output voltage range(2)
Junction temperature, TJ
Storage temperature, Tst
VIN
EN3, EN5, V3IN
V5IN
V5IN , (VVIN< 5.7 V)
VRTC3, VCLK, VREG3, VREG5
VALUE
–0.3 to 30
–0.3 to 6
–0.3 to 6
–0.3 to VVIN + 0.3
–0.3 to 6
150
–55 to 150
UNIT
V
°C
°C
(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 recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability
(2) All voltage values are with respect to the network ground terminal unless otherwise noted.
DISSIPATION RATINGS(1)
PACKAGE
10-pin DRC
POWER RATING
BELOW AND AT TA = 25°C
1.256 W
DERATING FACTOR
ABOVE TA = 25°C
12.6 mW/°C
(1) θJA (junction to air) for high-K board in still air environment is 80°C/W.
TA = 85°C
POWER RATING
0.502 W
RECOMMENDED OPERATING CONDITIONS
VIN
Input voltage range
EN5, EN3, V3IN
V5IN
Output voltage range
V5IN, (VVIN< 5.5 V)
VCLK, VRTC3, VREG3, VREG5
Operating free-air temperature, TA
MIN
4.5
–0.1
–0.1
–0.1
–0.1
–40
TYP
MAX
28
5.5
5.5
VVIN
5.5
85
UNIT
V
°C
2
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Product Folder Link(s): TPS51103
Copyright © 2008, Texas Instruments Incorporated





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