RT8253A データシートの表示（PDF） - Richtek Technology
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RT8253A Datasheet PDF : 15 Pages
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RT8253A
Parameter
Input Under Voltage Lockout
Threshold
Input Under Voltage Lockout
Threshold Hysteresis
EN Threshold Logic-High
Voltage
Logic-Low
Soft-Start Current
Soft-Start Period
Thermal Shutdown
Symbol
VIH
VIL
ISS
tSS
TSD
Test Conditions
VIN Rising
VSS = 0V
CSS = 0.1μF
Min Typ Max Unit
3.8
4.2
4.5
V
--
320
--
mV
2.7
--
5.5
V
--
--
0.4
--
6
--
μA
--
13.5
--
ms
--
150
--
°C
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
Note 2. θJA is measured in natural convection at TA = 25°C on a high effective thermal conductivity four-layer test board of
JEDEC 51-7 thermal measurement standard. The measurement case positions of θJC are on the lead of the SOP
package and the expose pad for the SOP(Exposed Pad) package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
DS8253A-02 March 2011
www.richtek.com
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