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XC9508 Datasheet(PDF) 6 Page - Torex Semiconductor

Part No. XC9508
Description  Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator plus Voltage Detector
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Maker  TOREX [Torex Semiconductor]
Homepage  http://www.torex.co.jp
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XC9508 Datasheet(HTML) 6 Page - Torex Semiconductor

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6
XC9508 Series
Data Sheet
ud200541
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS CIRCUIT
Output Voltage
VROUT(E)
IROUT=30mA
1.764
1.800
1.836
V
2
Maximum Output Current
Imax2
200
-
-
mA
2
Load Regulation
VROUT
1mA≦IROUT≦100mA
-
15
50
mV
2
Dropout Voltage 1 (*6)
Vdif 1
IROUT=30mA
-
30
200
mV
2
Dropout Voltage 2
Vdif 2
IROUT=100mA
-
100
200
mV
2
Line Regulation
VROUT
VIN・VROUT
IROUT=30mA
VROUT(T)+1V≦VIN≦6V
-
0.05
0.25
%/V
2
Current Limit
Ilim2
VROUT=VROUT(E) x 0.9
240
300
-
mA
7
Short-Circuit Current
Ishort
VROUT=VSS
-
30
-
mA
7
Ripple Rejection Rate
PSRR
VIN={VOUT(T)+1.0} VDC+0.5Vp-pAC,
IROUT=30mA, f=1kHz
-
60
-
dB
12
Output Voltage
Temperature Characteristics
VROUT
Topr・VROUT
IROUT=30mA
-40℃≦Topr≦85℃
-
±
100
-
ppm/
2
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS CIRCUIT
Detect Voltage
VDF(E)
CE=0V
2.646
2.700
2.754
V
8
Hysteresis Range
VHYS
VHYS=[VDR(E)
(*11) - VDF(E)] / VDF(E) x 100
2
5
8
%
8
VD Output Current
IVD
VDOUT=0.5V, CE=0V
1
-
-
mA
9
Output Voltage
Temperature Characteristics
VDF
Topr・VDF
-40℃≦Topr≦85℃
-
±
100
-
ppm/
8
XC9508xxxCAx (Continued)
Regulator (1.8V product)
Topr=25℃
Detector (2.7V product)
Test conditions: Unless otherwise stated:
DC/DC : VIN=3.6V [@ DCOUT:2.2V]
VR: VIN = 2.8V (VIN=VROUT(T) + 1.0V)
VD: VIN=5.0V
Common conditions for all test items: CE=VIN, MODE=0V
* VROUT(T) : Setting output voltage
NOTE:
*1 : Including VD supply current (VD operates when in stand-by mode.)
*2 : Including hysteresis operating voltage range.
*3 : ON resistance (Ω)= 0.05 (V) / ILX (A)
*4 : EFFI = { ( Output Voltage x Output Current ) / ( Input Voltage x Input Current) } x 100
*5 : Time until it short-circuits DCOUT with GND through 1Ω of resistance from a state of operation and is set to DCOUT=0V from
current limit pulse generating.
*6 : Vdif = (VIN1
(*7) - VROUT1 (*8) )
*7 : VIN 1 = The input voltage when VROUT1 appears as input voltage is gradually decreased.
*8 : VROUT1 = A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VROUT(T) + 1.0V} is input.
*9 : Current limit = When VIN is low, limit current may not be reached because of voltage falls caused by ON resistance or serial
resistance of coils.
*10: Integral latch circuit=latch time may become longer and latch operation may not work when VIN is 3.0V or more.
*11: VDR(E) = VD release voltage
*12: When temperature is high, a current of approximately 5.0μA (maximum) may leak.
ELECTRICAL CHARACTERISTICS (Continued)


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