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LM3525 数据表(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部件名 LM3525
功能描述  Single Port USB Power Switch and Over-Current Protection
Download  10 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LM3525 数据表(HTML) 4 Page - National Semiconductor (TI)

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AC Electrical Characteristics
Limits in standard typeface are for T
J = 25˚C, and limits in boldface type apply over the full operating temperature range. Un-
less otherwise specified: V
IN = 5.0V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
r
OUT Rise Time
R
L =10Ω
200
µs
t
f
OUT Fall Time
R
L =10Ω
20
µs
t
ON
Turn on Delay, EN to OUT
R
L =10Ω
200
µs
t
OFF
Turn off Delay, EN to OUT
R
L =10Ω
20
µs
t
OC
Over Current Flag Delay
R
L =0
1
ms
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
beyond its rated operating conditions. Products are not tested under negative Absolute Maximum conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX (maximum junction temperature), θJA (junction to am-
bient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDMAX = (TJMAX −TA)/θJA or the number
given in the Absolute Maximum Ratings, which ever is lower. The thermal resistance
θJA of the LM3525 in the SO-8 package is 150˚C/W.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k
Ω resistor into each pin.
Note 4: Thermal shutdown will protect the device from permanent damage.
Note 5: For the LM3525-L, OFF is EN
≥ 2.4V and ON is EN ≤ 0.8V. For the LM3525-H, OFF is EN ≤ 0.8V and ON is EN ≥ 2.4V
Pin Description
Pin Number
Pin Name
Pin Function
1EN
(LM3525-L)
EN
(LM3525-H)
Enable (Input): Logic-compatible enable input.
2
FLG
Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent, UVLO and thermal
shutdown.
3
GND
Ground
4, 5
NC
Not internally connected.
7
IN
Supply Input: This pin is the input to the power switch and the supply voltage for the IC.
6, 8
OUT
Switch Output: This pin is the output of the high side switch. Pins6&8 must be tied together.
Typical Application Circuit
DS101055-3
www.national.com
4


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