參數(shù)資料
型號: TPS2114APW
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: GREEN, PLASTIC, TSSOP-8
文件頁數(shù): 24/27頁
文件大?。?/td> 574K
代理商: TPS2114APW
IN1
OUT
IN2
GND
8
7
6
5
STAT
D0
D1
ILIM
1
2
3
4
GND
STAT
D0
D1
ILIM
IN1
OUT
IN2
GND
1
2
3
4
8
7
6
5
SBVS044E
– MARCH 2004 – REVISED APRIL 2011
Table 1. Truth Table
D1
D0
VI(IN2) > VI(IN1)
STAT
OUT(1)
0
X(2)
Hi-Z
IN2
0
1
No
0
IN1
0
1
Yes
Hi-Z
IN2
1
0
X
0
IN1
1
X
0
Hi-Z
(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.
(2)
X = Don
’t care.
PIN CONFIGURATIONS
PW PACKAGE
DRB PACKAGE
TSSOP-8
3mm
× 3mm SON-8
(TOP VIEW)
TERMINAL FUNCTIONS
TERMINAL
NAME
NO.
I/O
DESCRIPTION
TTL- and CMOS-compatible input pins. Each pin has a 1-
μA pull-up. Table 1 illustrates the
D0
2
I
functionality of D0 and D1.
TTL- and CMOS-compatible input pins. Each pin has a 1-
μA pull-up. Table 1 illustrates the
D1
3
I
functionality of D0 and D1.
GND
5
I
Ground
Primary power switch input. The IN1 switch can be enabled only if the IN1 supply is above
IN1
8
I
the UVLO threshold and at least one supply exceeds the internal VDD UVLO.
Secondary power switch input. The IN2 switch can be enabled only if the IN2 supply is
IN2
6
I
above the UVLO threshold and at least one supply exceeds the internal VDD UVLO.
A resistor RILIM from ILIM to GND sets the current limit IL to 250/RILIM and 500/RILIM for the
ILIM
4
I
TPS2114A and TPS2115A, respectively.
OUT
7
O
Power switch output
STAT is an open-drain output that is Hi-Z if the IN2 switch is ON. STAT pulls low if the IN1
STAT
1
O
switch is ON or if OUT is Hi-Z (i.e., EN is equal to logic 0).
PAD
I
Tie to GND. Connect to internal planes for improved heatsinking with multiple vias.
6
Copyright
2004–2011, Texas Instruments Incorporated
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