參數(shù)資料
型號: TPS2112PWRG4
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): 18/21頁
文件大?。?/td> 373K
代理商: TPS2112PWRG4
TPS2112
TPS2113
SLVS446 – DECEMBER 2002
www.ti.com
6
TRUTH TABLE
EN
VI(VSNS) > 0.8V
VI(IN2) > VI(IN1)
STAT
OUT(1)
Yes
X
0
IN1
0
No
0
IN1
0
No
Yes
Hi-Z
IN2
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.
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
EN
2
I
EN is a TTL and CMOS compatible input with a 1-
A pull-up. The truth table shown above illustrates the functionality of
EN.
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 TPS2112 and TPS2113,
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)
VSNS
3
I
An internal power FET connects OUT to IN1 if the VSNS voltage is greater than 0.8 V. Otherwise, the FET connects OUT
to the higher of IN1 and IN2. The truth table shown above illustrates the functionality of VSNS.
相關(guān)PDF資料
PDF描述
TPS2113PWG4 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
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