參數(shù)資料
型號(hào): TPS2346PWRG4
廠商: Texas Instruments
文件頁(yè)數(shù): 17/30頁(yè)
文件大?。?/td> 490K
描述: IC HOT SWAP POWER MGR 24-TSSOP
標(biāo)準(zhǔn)包裝: 2,000
類型: 熱交換控制器
應(yīng)用: 光纖學(xué)網(wǎng)絡(luò)(ONET)
內(nèi)部開關(guān):
電源電壓: -5.2V,3.3V,5V,5.15V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 24-TSSOP
包裝: 帶卷 (TR)
TPS2346
 
SLUS529  MAY 2002
17
www.ti.com
TYPICAL CHARACTERISTICS
Figure 17
PRECHARGE OUTPUT VOLTAGE
vs
OUTPUT CURRENT, SOURCING
I
O(PCHG)
  Output Current  mA
8
7
5
0.4
0.9
1.1
0.5
0.6
0.7
0.8
1.0
6
4
2
3
1
0
V
I(VIN2)
 = 4.75 V
V
I(VIN3)
 = 3.30 V
V
I(VIN1)
 = V
I(VIN4)
 = FLOAT
T
A
 = 25_C
Figure 18
PRECHARGE OUTPUT VOLTAGE
vs
OUTPUT CURRENT, SINKING
I
O(PCHG)
  Output Current  mA
0.8
1.0
1.1
1.2
1.4
0.9
1.3
2
0
4
8
6
10
12
14
16
V
I(VIN2)
 = 5.25 V
V
I(VIN3)
 = 3.30 V
V
I(VIN1)
 = V
I(VIN4)
 = FLOAT
T
A
 = 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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