RT917207 Просмотр технического описания (PDF) - Richtek Technology
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RT917207 Datasheet PDF : 15 Pages
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RT9172
Electrical Characteristics
(Limits in standard typeface are for TA = 25°C, unless otherwise specified: VIN = VO(NOM) + 1.0V, IL = 10mA,
COUT = 10μF(Electrolytic), VEN = VIN)
Parameter
Symbol
Test Conditions
Min Typ
Max
Units
Output Voltage Tolerance
-1.5
0 +1.5 %
Input Voltage Range
Line Regulation
VIN
2.25 --
5.5
V
ΔVLINE VOUT + 0.4V < VIN < 5.5V
-- 0.35 1
%
Note 1
--
0.4
1
Load Regulation
ΔVLOAD Note 2
Note 3
--
0.1 0.4
%
--
0.1 0.4
Dropout Voltage
Quiescent Current
Shutdown Supply Current
Peak Output Current
Short Circuit Protection
VDROP
IQ
IGSD
IO(PEAK)
IL = 3A
VEN = 0V
--
400 700 mV
--
1.2
3
mA
--
0.5
5
μA
3.5
5
--
A
Current Limit
Over Temperature Protection
ILIMIT
3.5
5
--
A
Shutdown Threshold
Thermal Shutdown Hysteresis
Shutdown Function
TSD
Guaranteed by design
Guaranteed by design
--
170
--
°C
--
10
--
°C
EN Pin Shutdown Threshold
Output = High
VEN
Output = Low
1.2
VIN
--
V
--
0
0.4
EN Input Current
FLG Pin Leakage Current
FLG Pin Sink Current
VEN = VIN
ILEAKAGE
VFLG = 0.5V
--
0.1
--
nA
--
1
--
nA
2
--
--
mA
Note 1. RT9172-CX, RT9172F-XXCX5, 10mA < IL < 3A
Note 2. RT9172S-XXCX5, RT9172N-XXCX5, 10mA < IL < 3A
Note 3. RT9172CS, 10mA < IL < 1.5A
Note 4. 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. The case point of θJC is on the center of the exposed pad. The pad size
is 125mm2 on TO-263 packages.
DS9172-14 March 2007
www.richtek.com
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