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參數(shù)資料
| 型號： | TPS3825-50DBVTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | GREEN, PLASTIC, SOT-23, 5 PIN |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 460K |
| 代理商： | TPS3825-50DBVTG4 |
TPS3820xx, TPS3823xx,
TPS3824xx, TPS3825xx,
TPS3828xx
SLVS165G APRIL 1998 REVISED JANUARY 2008
www.ti.com
6
ELECTRICAL CHARACTERISTICS (continued)
Over operating free-air temperature range, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IIH(AV)
Average high-level input current
WDI
WDI = VDD,
time average (dc = 88%)
120
IIL(AV)
Average low-level input current
WDI
WDI = 0.3 V, VDD = 5.5 V
time average (dc = 12%)
15
WDI
WDI = VDD
140
190
A
IIH
High-level input current
MR
MR = VDD × 0.7,
VDD = 5.5 V
40
60
A
IIL
Low-level input current
WDI
WDI = 0.3 V, VDD = 5.5 V
140
190
IIL
Low-level input current
MR
MR = 0.3 V, VDD = 5.5 V
110
160
TPS382x-25
IOS
Output short-circuit
RESET
TPS382x-30
VDD = VIT, max + 0.2 V,
400
A
IOS
Output short-circuit
current(1)
RESET
TPS382x-33
VDD = VIT, max + 0.2 V,
VO = 0 V
400
A
current
TPS382x-50
VO = 0 V
800
IDD
Supply current
WDI and MR unconnected,
Outputs unconnected
15
25
A
Internal pullup resistor at MR
52
k
Ci
Input capacitance at MR, WDI
VI = 0 V to 5.5 V
5
pF
(1) The RESET short-circuit current is the maximum pullup current when RESET is driven low by a P bidirectional reset pin.
TIMING REQUIREMENTS AT RL = 1 M, CL = 50 PF, TA = 25°C
At RL = 1 M, CL = 50 pF, TA = +25°C.
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
at VDD
VDD = VIT + 0.2 V,
VDD = VIT- 0.2 V
6
s
tw
Pulse width
at MR
VDD ≥ VIT + 0.2 V,
VIL = 0.3 x VDD,
VIH = 0.7 x VDD
1
s
tw
Pulse width
at WDI
VDD ≥ VIT + 0.2 V,
VIL = 0.3 x VDD,
VIH = 0.7 x VDD
100
ns
SWITCHING CHARACTERISTICS
At RL = 1 M, CL = 50 pF, TA = +25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ttout
Watchdog time out
TPS3820
VDD ≥ VIT + 0.2 V,
112
200
310
ms
ttout
Watchdog time out
TPS3823/4/8
VDD ≥ VIT + 0.2 V,
See timing diagram
0.9
1.6
2.5
s
td
Delay time
TPS3820
VDD ≥ VIT +0.2 V,
15
25
37
ms
td
Delay time
TPS3823/4/5/8
VDD ≥ VIT +0.2 V,
See timing diagram
120
200
300
ms
tPHL
Propagation (delay) time,
high-to-low-level output
MR to RESET delay
(TPS3820/3/5/8)
VDD ≥ VIT +0.2 V,
VIL = 0.3 x VDD,
VIH = 0.7 x VDD
0.1
s
tPHL
high-to-low-level output
VDD to RESET delay
VIL = VIT- - 0.2 V,
VIH = VIT- + 0.2 V
25
s
tPLH
Propagation (delay) time,
low-to-high-level output
MR to RESET delay (TPS3824/5)
VDD ≥ VIT +0.2 V,
VIL = 0.3 x VDD,
VIH = 0.7 x VDD
0.1
s
tPLH
low-to-high-level output
VDD to RESET delay (TPS3824/5)
VIL = VIT- - 0.2 V,
VIH = VIT- + 0.2 V
25
s
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