參數(shù)資料
型號: TPS2346PWG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24
封裝: GREEN, TSSOP-24
文件頁數(shù): 9/30頁
文件大?。?/td> 490K
代理商: TPS2346PWG4
TPS2346
SLUS529 – MAY 2002
17
www.ti.com
TYPICAL CHARACTERISTICS
Figure 17
PRECHARGE OUTPUT VOLTAGE
vs
OUTPUT CURRENT, SOURCING
IO(PCHG) – Output Current – mA
V
O(PCHG)
Output
V
o
ltage
V
–8
–7
–5
0.4
0.9
1.1
0.5
0.6
0.7
0.8
1.0
–6
–4
–2
–3
–10
VI(VIN2) = 4.75 V
VI(VIN3) = 3.30 V
VI(VIN1) =VI(VIN4) =FLOAT
TA = 25_C
Figure 18
PRECHARGE OUTPUT VOLTAGE
vs
OUTPUT CURRENT, SINKING
IO(PCHG) – Output Current – mA
V
O(PCHG)
Output
V
o
ltage
V
0.8
1.0
1.1
1.2
1.4
0.9
1.3
2
04
8
6
10
121416
VI(VIN2) = 5.25 V
VI(VIN3) = 3.30 V
VI(VIN1) =VI(VIN4) =FLOAT
TA = 25_C
APPLICATION INFORMATION
The connections to set up the TPS2346 for operation in an ONET plug-in are shown in the typical application
diagram.The TPS2346 works in conjunction with four external N-channel MOSFETs to provide isolation of the
back-end power planes when disabled, and to provide a low-impedance power path when the load voltages are
at the full-input dc potential. For proper operation, each channel of the device must be connected to the
appropriate supply as listed in Table 1.
Table 1. TPS2346 Channel to Back-Plane Supply Connections
TPS2346
CHANNEL
BACKPLANE
SUPPLY
1
5.15 V
2
5 V
3
3.3 V
4
–5.2 V
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