RT9027A/B
Parameter
Symbol
Test Conditions
Min Typ Max Units
FON Function (RT9027A)
Logic-Low Voltage
FON Threshold
Logic-High Voltage
FON Bias Pin Current
EN Function (RT9027B)
EN Threshold Logic-Low Voltage VIL
Logic-High Voltage VIH
EN Bias Pin Current
IEN
Over Temperature Protection
Thermal Shutdown Temperature TSD
Thermal Shutdown Hysteresis
VFON = 0
VEN = 0
--
--
0.4
V
1.6
--
--
V
--
1.5 15
uA
--
--
0.4
V
1.6
--
--
V
--
10
15 uA
-- 140 --
°C
--
30
--
°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. Devices are ESD sensitive. Handling precaution is recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θJA is measured in the natural convection at TA = 25°C on a high effective four layers thermal conductivity test board of
JEDEC 51-7 thermal measurement standard.
www.richtek.com
4
Downloaded from Elcodis.com electronic components distributor
DS9027A/B-01 October 2008
Free Datasheet http://www.Datasheet-PDF.com/