RT9183A Ver la hoja de datos (PDF) - Richtek Technology
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RT9183A Datasheet PDF : 17 Pages
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RT9183A
Parameter
Current Limit
Dropout Voltage (Note 7)
Line Regulation
Symbol
Test Conditions
ILIM
VDROP
IOUT = 0.5A
IOUT = 1.0A
IOUT = 1.5A
ΔVLINE
VOUT + 0.7V < VIN < 5.5V
IOUT = 10mA
Min Typ Max Unit
2
3.2 4.2
A
--
110 300
--
220 400 mV
--
330 500
-- 0.035 0.18 %/V
Load Regulation (Note 8)
(Fixed Output Voltage)
ΔVLOAD 1mA < IOUT < 1.5A
--
22 45 mV
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
EN Threshold
Logic-Low Voltage
Logic-High Voltage
Enable Pin Current
ADJ
Reference Voltage Tolerance
Adjust Pin Current
Adjust Pin Threshold
TSD
ΔTSD
VIL
VIH
IEN
VREF
IADJ
VTH(ADJ)
VIN = 5.5V
VIN = 5.5V
VIN = 5.5V, Enable
VADJ = VREF
--
170
--
°C
--
30
--
°C
--
--
0.6
V
1.8
--
--
--
0.1
1
μA
0.792 0.8 0.808 V
--
10 100 nA
0.05 0.1 0.2
V
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 (still air) at TA = 25°C with the component mounted on a low effective
thermal conductivity test board of JEDEC 51-3 thermal measurement standard. And the copper area of PCB
layout is 4mm x 2.5mm on SOT-223, 10mm x 10mm on TO-252, 14mm x 14mm on TO-263 for thermal
measurement.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. 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 6. Standby current is the input current drawn by a regulator when the output voltage is disabled by a shutdown
signal (VEN >1.8V ). It is measured with VIN = 5.5V.
Note 7. The dropout voltage is defined as VIN − VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV.
Note 8. Regulation is measured at constant junction temperature by using a 20ms current pulse. Devices are tested for
load regulation in the load range from 10mA to 1.5A.
DS9183A-01 April 2011
www.richtek.com
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