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TPS2557DRBT датащи(PDF) 3 Page - Texas Instruments

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номер детали TPS2557DRBT
подробное описание детали  PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
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домашняя страница  http://www.ti.com
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TPS2557DRBT датащи(HTML) 3 Page - Texas Instruments

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TPS2556
TPS2557
www.ti.com
SLVS931A
– NOVEMBER 2009 – REVISED FEBRUARY 2012
RECOMMENDED OPERATING CONDITIONS
MIN
MAX
UNIT
VIN
Input voltage, IN
2.5
6.5
V
VEN
TPS2556
0
6.5
Enable voltage
V
VEN
TPS2557
0
6.5
VIH
High-level input voltage on EN or EN
1.1
V
VIL
Low-level input voltage on EN or EN
0.66
IOUT
Continuous output current, OUT
0
5
A
Continuous FAULT sink current
0
10
mA
TJ
Operating virtual junction temperature
–40
125
°C
RILIM
Recommended resistor limit range
20k
187k
Ω
ELECTRICAL CHARACTERISTICS
over recommended operating conditions, V/EN = 0 V, or VEN = VIN (unless otherwise noted)
PARAMETER
TEST CONDITIONS(1)
MIN
TYP
MAX
UNIT
POWER SWITCH
TJ = 25°C
22
25
Static drain-source on-state
rDS(on)
m
resistance
–40 °C ≤TJ ≤ 125°C
35
VIN = 6.5 V
2
3
4
tr
Rise time, output
VIN = 2.5 V
1
2
3
CL = 1 μF, RL = 100 Ω,
ms
(see Figure 2)
VIN = 6.5 V
0.6
0.8
1.0
tf
Fall time, output
VIN = 2.5 V
0.4
0.6
0.8
ENABLE INPUT EN OR EN
Enable pin turn on/off threshold
0.66
1.1
V
Hysteresis
55(2)
mV
IEN
Input current
VEN = 0 V or 6.5 V, V/EN = 0 V or 6.5 V
–0.5
0.5
μA
ton
Turn-on time
9
ms
CL = 1 μF, RL = 100 Ω, (see Figure 2)
toff
Turn-off time
6
ms
CURRENT LIMIT
RILIM = 24.9 kΩ
4130
4450
4695
Current-limit threshold (Maximum DC output current IOUT delivered to
IOS
RILIM = 61.9 kΩ
1590
1785
1960
mA
load)
& Short-circuit current, OUT connected to GND
RILIM = 100 kΩ
935
1100
1260
tIOS
Response time to short circuit
VIN = 5.0 V (see Figure 3)
3.5(2)
μs
(1)
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account
separately.
(2)
These parameters are provided for reference only, and do no constitute part of TI
's published specifications for purposes of TI's product
warranty.
Copyright
© 2009–2012, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Link(s): TPS2556 TPS2557


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