參數(shù)資料
型號: TPS2070
廠商: Texas Instruments, Inc.
英文描述: "Pwr Controller for Bus/Self Pwrd Hub w/ 5V LDO Control
中文描述: 具有 5V LDO 控制、3.3V LDO、8 個電源開關(guān)、工作態(tài)低電平 BPMode Ind,用于總線/自供電集線器的功率控制器
文件頁數(shù): 15/29頁
文件大?。?/td> 472K
代理商: TPS2070
TPS2070, TPS2071
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS287A
SEPTEMBER 2000
REVISED FEBRUARY 2001
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
0
1
2
3
4
t
time
ms
5
6
7
8
9
10
VI(BP) = 5 V
TA = 25
°
C
BP_DIS = 5 V
VO(PG)
(2 V/div)
VO
(3.3V_OUT)
(1 V/div)
Figure 17. SP to BP Automatic
Switchover Disabled
0
40
80
120 160 200 240 280 320 360 400
t
time
ms
Figure 18. SP to BP Automatic
Switchover Enabled
VI(BP) = 5 V
TA = 25
°
C
BP_DIS = 0 V or Open
VO(PG)
(2 V/div)
VO
(DPO_RST)
(1 V/div)
VI(BP) = 5 V
TA = 25
°
C
BP_DIS = 5 V
t
time
ms
VO(PG)
(2 V/div)
VO
(DPO_RST)
(1 V/div)
Figure 19. SP to BP Automatic
Switchover Disabled
0
40
80
120 160 200 240 280 320 360 400
0
100 200 300 400 500 600 700 800 900 1000
t
time
μ
s
VI(BP)
4.25 V
VO
(3.3V_OUT)
(0.05 V/div)
5.25 V
Figure 20. Line Transient Response
TA = 25
°
C
CL (3.3 V
OUT) = 4.7
μ
F
IO (3.3 V
OUT) = 100 mA
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