参数资料
型号: TPS2074
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24
封装: PLASTIC, SSOP-24
文件页数: 24/24页
文件大小: 389K
代理商: TPS2074
TPS2074, TPS2075
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS288 – SEPTEMBER 2000
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
thermal shutdown
PARAMETER
MIN
TYP
MAX
UNIT
TJ
Thermal shutdown
First
140
°C
TJ
Thermal shutdown
Second
150
°C
Hysteresis
First
15
°C
Hysteresis
Second
25
°C
IN
OUT
DUT
+
TEST CIRCUIT
Current
Meter
Figure 1. Current Limit Response
toff
tpd(off)
ton
tpd(on)
50%
90%
10%
tr
tf
90%
10%
VI(ENx)
VO(OUTx)
TIMING
Figure 2. Timing and Internal Voltage Regulator
Transition Waveforms
0
2
4
6
8
10
12
14
16
18
20
VI(BP) = 5 V
TA = 25°C
CL = 10 F
RL = 50
t – time – ms
VI(EN)
(2 V/div)
VO(out)
(2 V/div)
VI(BP) = 5 V
TA = 25°C
CL = 10 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
141618
20
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