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TPS2115PWG4 Datasheet(PDF) 7 Page - Texas Instruments

No. de pieza TPS2115PWG4
Descripción Electrónicos  AUTOSWITCHING POWER MULTIPLEXER
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS2115PWG4 Datasheet(HTML) 7 Page - Texas Instruments

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FUNCTIONAL BLOCK DIAGRAM
Q2 is ON
1
STAT
Control
Logic
D1
D0
UVLO (IN1)
UVLO (IN2)
UVLO (VDD)
Q2 is ON
Q1 is ON
_
+
_
+
+
0.6 V
EN2
EN1
Cross-Conduction
Detector
_
+
Q2
Q1
Charge
Pump
0.5 V
TPS2114: k = 0.2%
TPS2115: k = 0.1%
k* IO(OUT)
_
+
VO(OUT) > VI(INx)
+
100 mV
_
+
IO(OUT)
Vf = 0 V
EN1
IN2
IN1
7
4
OUT
ILIM
Internal VDD
Vf = 0 V
VDD
ULVO
Thermal
Sense
1
µA
IN2
ULVO
1
µA
IN1
ULVO
8
6
2
3
5
IN1
IN2
D0
D1
GND
TPS2114
TPS2115
SLVS447A – DECEMBER 2002 – REVISED MARCH 2004
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
D0
2
I
TTL and CMOS compatible input pins. Each pin has a 1-µA pullup resistor. The truth table shown above illustrates
the functionality of D0 and D1.
D1
3
I
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 R(ILIM) from ILIM to GND sets the current limit IL to 250/R(ILIM) and 500/R(ILIM) for the TPS2114 and
TPS2115, 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).
7


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