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TPS2115A Datasheet(PDF) 6 Page - Texas Instruments

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Part # TPS2115A
Description  AUTOSWITCHING POWER MUX
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS2115A Datasheet(HTML) 6 Page - Texas Instruments

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TPS2114A
TPS2115A
SBVS044A − MARCH 2004 − REVISED MAY 2004
www.ti.com
6
TRUTH TABLE
D1
D0
VI(IN2) > VI(IN1)
STAT
OUT(1)
0
0
X
Hi-Z
IN2
0
1
No
0
IN1
0
1
Yes
Hi-Z
IN2
1
0
X
0
IN1
1
1
X
0
Hi-Z
X = Don’t care.
(1)The under-voltage lockout circuit causes the output OUT to go Hi-Z if the
selected power supply does not exceed the IN1/IN2 UVLO, or if neither
of the supplies exceeds the internal VDD UVLO
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
D0
2
I
TTL- and CMOS-compatible input pins. Each pin has a 1-
µA pull-up. The truth table shown above illustrates the
functionality of D0 and D1.
D1
3
I
TTL- and CMOS-compatible input pins. Each pin has a 1-
µA pull-up. The truth table shown above illustrates the
functionality of D0 and D1.
GND
5
I
Ground
IN1
8
I
Primary power switch input. The IN1 switch can be enabled only if the IN1 supply is above the UVLO threshold and at
least one supply exceeds the internal VDD UVLO.
IN2
6
I
Secondary power switch input. The IN2 switch can be enabled only if the IN2 supply is above the UVLO threshold and
at least one supply exceeds the internal VDD UVLO.
ILIM
4
I
A resistor RILIM from ILIM to GND sets the current limit IL to 250/RILIM and 500/RILIM for the TPS2114A and TPS2115A,
respectively.
OUT
7
O
Power switch output
STAT
1
O
STAT is an open-drain output that is Hi-Z if the IN2 switch is ON. STAT pulls low if the IN1 switch is ON or if OUT is Hi-Z
(i.e., EN is equal to logic 0).


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