TPS2112A_06 Datasheet, PDF (1/21 Pages) Texas Instruments – AUTOSWITCHING POWER MUX

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TPS2112A
TPS2113A
SBVS045A − MARCH 2004 − REVISED FEBRUARY 2006
AUTOSWITCHING POWER MUX
FEATURES
D Two-Input, One-Output Power Multiplexer
With Low r_DS(on) Switches:
− 84 mΩ Typ (TPS2113A)
− 120 mΩ Typ (TPS2112A)
D Reverse and Cross-Conduction Blocking
D Wide Operating Voltage Range . . . .2.8 V to
5.5 V
D Low Standby Current . . . . 0.5-µA Typ
D Low Operating Current . . . . 55-µA Typ
D Adjustable Current Limit
D Controlled Output Voltage Transition Times,
Limits Inrush Current and Minimizes Output
Voltage Hold-Up Capacitance
D CMOS- and TTL-Compatible Control Inputs
D Auto-Switching Operating Mode
D Thermal Shutdown
D Available in TSSOP-8 and 3mm x 3mm SON-8
Packages
APPLICATIONS
D PCs
D PDAs
D Digital Cameras
D Modems
D Cell Phones
D Digital Radios
D MP3 Players
PW PACKAGE
(TOP VIEW)
STAT 1
EN 2
VSNS 3
ILIM 4
8 IN1
7 OUT
6 IN2
5 GND
DRB PACKAGE
(TOP VIEW)
STAT 1
EN 2
VSNS 3
ILIM 4
GND
8 IN1
7 OUT
6 IN2
5 GND
DESCRIPTION
The TPS211xA family of power multiplexers enables seamless transition between two power supplies, such as a battery
and a wall adapter, each operating at 2.8−5.5 V and delivering up to 1 A. The TPS211xA family includes extensive protection
circuitry, including user-programmable current limiting, thermal protection, inrush current control, seamless supply
transition, cross-conduction blocking, and reverse-conduction blocking. These features greatly simplify designing power
multiplexer applications.
TYPICAL APPLICATION
IN1: 2.8 − 5.5 V
TPS2113APW
1
STAT
IN1 8
2
EN
OUT ⁷
3
VSNS
4 _ILIM
6
IN2
5
GND
0.1 µF
Switch
Status
R1
CL
RL
IN2: 2.8 − 5.5 V
RILIM
0.1 µF
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