RT9187 データシートの表示（PDF） - Richtek Technology
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RT9187 Datasheet PDF : 9 Pages
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RT9187
Parameter
Symbol
Test Conditions
Min Typ Max Units
Power Supply
Rejection Rate
f = 100Hz
f = 10kHz
P SR R
IOUT = 300mA
--
−60
--
dB
--
−50
--
Line Regulation
Start-Up Time
ΔVLINE
VIN = (VOUT+0.5) to 5.5V,
IOUT = 1mA
--
TStart_Up RLOAD = 3Ω, 1nF ≤ CBP ≤ 0.1μF
--
--
0.3 %
40
--
μs
Thermal Shutdown Temperature TSD
Thermal Shutdown Hysteresis ΔTSD
--
170
--
°C
--
30
--
ADJ
Reference Voltage Tolerance
ADJ Pin Current
V REF
IA DJ
VADJ = VREF
0.784 0.8 0.816 V
--
10 100 nA
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. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) - 100mV.
Note 5. Regulation is measured at constant junction temperature by using a 2ms current pulse. Devices are tested for load
regulation in the load range from 10mA to 1.0A.
Note 6. Quiescent, or ground current, is the difference between input and output currents. It is defined by IQ = IIN - IOUT under no
load condition (IOUT = 0mA). The total current drawn from the supply is the sum of the load current plus the ground pin
current.
Note 7. Standby current is the input current drawn by a regulator when the output voltage is disabled by a shutdown signal (VEN
>1.8V ).
Note 8. Performance at -5°C ≤ TA ≤ 85°C is assured by design.
Note 9. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard.
DS9187-09 April 2008
www.richtek.com
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