參數(shù)資料
型號: TPS2070DAPR
廠商: Texas Instruments, Inc.
英文描述: FOUR-PORT USB HUB POWER CONTROLLERS
中文描述: 4端口USB集線器電源控制器
文件頁數(shù): 11/29頁
文件大?。?/td> 472K
代理商: TPS2070DAPR
TPS2070, TPS2071
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS287A
SEPTEMBER 2000
REVISED FEBRUARY 2001
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
IN
OUT
DUT
+
TEST CIRCUIT
Current
Meter
Figure 1. Current Limit Response
toff
tpd(off)
ton
tpd(on)
50%
50%
90%
90%
10%
10%
tr
tf
90%
90%
10%
10%
VI(ENx)
VO(OUTx)
VO(OUTx)
TIMING
Figure 2. Timing and Internal Voltage Regulator
Transition Waveforms
0
2
4
6
8
t
time
ms
10
12
14
16
18
20
VI(BP) = 5 V
TA = 25
°
C
CL = 10
μ
F
RL = 50
VI(EN)
(2 V/div)
VO(out)
(2 V/div)
VI(BP) = 5V
TA = 25
°
C
CL = 10
μ
F
RL = 50
t
time
ms
VI(EN)
(2 V/div)
VO(OUT)
(2 V/div)
Figure 3. Turnon Delay and Rise Time
(BP Switch)
Figure 4. Turnoff Delay and Fall Time
(BP Switch)
0
2
4
6
8
10
12
14
16
18
20
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