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RT9183 Datasheet(PDF) 5 Page - Richtek Technology Corporation

Part No. RT9183
Description  Ultra Low Dropout 1.5A Linear Regulator
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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RT9183 Datasheet(HTML) 5 Page - Richtek Technology Corporation

 
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RT9183
5
DS9183-14 April 2008
www.richtek.com
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Current Limit
ILIM
2
3.2
4.2
A
IOUT = 0.5A
--
110
300
IOUT = 1.0A
--
220
400
Dropout Voltage
(Note 4)
VDROP
IOUT = 1.5A
--
330
500
mV
Line Regulation
ΔVLINE
VOUT + 0.7V < VIN < 5.5V
IOUT = 10mA
--
0.035
0.18
%/V
Load Regulation
(Note 5)
(Fixed Output Voltage)
ΔVLOAD
1mA < IOUT < 1.5A
--
22
45
mV
Thermal Shutdown Temperature
TSD
--
170
--
°C
Thermal Shutdown Hysteresis
ΔTSD
--
30
--
°C
Logic-Low Voltage
VIL
VIN = 5.5V
--
--
0.6
EN Threshold
Logic-High Voltage
VIH
VIN = 5.5V
1.8
--
--
V
Enable Pin Current
IEN
VIN = 5.5V, Enable
--
0.1
1
uA
ADJ
Reference Voltage Tolerance
VREF
0.784
0.8
0.816
V
Adjust Pin Current
IADJ
VADJ = VREF
--
10
100
nA
Adjust Pin Threshold
VTH(ADJ)
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. 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 20ms current pulse. Devices are tested for
load regulation in the load range from 10mA to 1.5A.
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 ). It is measured with VIN = 5.5V.
Note 8.
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.


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