RT9181 Просмотр технического описания (PDF) - Richtek Technology
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RT9181 Datasheet PDF : 10 Pages
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Preliminary
RT9181
Absolute Maximum Ratings
z Input Voltage, VIN
z CE Input Voltage
z Power Good Output Voltage
z Power Dissipation, PD @ TA = 25°C
SOT-25
z Junction Temperature Range
z Storage Temperature Range
z Operating Temperature Range
z Lead Temperature (Soldering, 10 sec.)
7V
7V
7V
570mW
-40°C ~ 125°C
-65°C ~ 150°C
0°C ~ 70°C
260°C
Electrical Characteristics
(VIN = 5V, CIN = COUT = 1µF, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Units
Input Voltage Range
Output Voltage Accuracy
Output Load Current
VIN
3
-- 5.5 V
∆VOUT
IL = 25mA
1.182
IL = 0.1mA, TA = 0°C to 70°C (Note) -2
1.2
--
1.218
+2
%
Continuous
150 --
-- mA
Current Limit
ILIMIT RLOAD = 1Ω
160 300 -- mA
GND Current
IG
No Load
90 160 250 µA
Line Regulation
∆VLINE VIN = 3 to 5.5V, IOUT = 0.1mA
-0.3 -- +0.3 %
Load Regulation
∆VLOAD IL = 0.1mA to 150mA
--
-- +3 %
Dropout Voltage
VDROP IL = 150mA
--
1
--
V
CE Input High Threshold
VIN = 3 to 5.5V
2
--
--
V
CE Input Low Threshold
VIN = 3 to 5.5V
--
-- 0.8 V
CE Input Bias Current
CE = GND or VIN
--
-- 100 nA
CE Supply Current
CE = GND
-- 0.01 -- µA
VPOGH Power Good Low Threshold
Output falls % of VOUT (power NOT
85
--
--
%
timer (Power good))
VPOGH Power Good High Threshold
Output reaches % of VOUT, start
delay timer (power good)
--
-- 90 %
VOL Power Good Output Logic Low
Fault condition, IOL = 100µA
--
-- 0.4 V
td(POG) Delay Time to Power Good
See timing diagram
1
2
5 mS
Power Up Overshoot
Maximum voltage overshoot allowed --
1
--
%
on output during power-up
Thermal Shutdown Temperature TSD
-- 150 -- °C
Thermal Shutdown Hysteresis
-- 20 -- °C
Output Voltage AC PSRR
100Hz, COUT = 1µF, RLOAD = 100Ω --
62
--
dB
Note: Assured by design, not tested in production
DS9181-00 February 2002
www.richtek-ic.com.tw
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