XCL208/XCL209
Series
■ELECTRICAL CHARACTERISTICS (Continued)
Ta=25℃
3) XCL208F083DR/XCL209F083DR
PARAMETER
FB Voltage
SYMBOL
VFB
CONDITIONS
MIN.
TYP.
MAX.
0.816
UNIT
V
CIRCUIT
VIN=VCE=5.0V, VFB voltage which Decrease
VFB from 0.9V, Lx becomes “L” (*10) level
0.784
0.800
③
Operating Voltage Range
Maximum Output Current
VIN
1.8
-
-
6.0
-
V
①
①
VIN=3.2V, VCE=1.0V,
IOUTMAX
400
mA
When connected to external components (*8)
VCE=VIN, VFB=0.4V,
Voltage which Lx pin holding “L” level (*1), (*10)
UVLO Voltage
VUVLO
1.00
1.40
1.78
V
③
Supply Current (XCL208)
Supply Current (XCL209)
Stand-by Current
-
-
-
46
21
0
65
35
IDD
ISTB
fOSC
VIN=VCE= 5.0V, VFB=0.88V
μA
μA
②
③
①
VIN=5.0V, VCE=0V, VFB=0.88V
1.0
When connected to external components,
VIN=3.2V, VCE=1.0V, IOUT=100mA
Oscillation Frequency
2.55
3.00
3.45
MHz
When connected to external components,
VIN=3.2V, VCE= VIN, IOUT=1mA
PFM Switching Current (*11)
IPFM
<E-4>
<E-5>
<E-6>
mA
⑩
PFM Duty Limit (*11)
Maximum Duty Cycle
Minimum Duty Cycle
DTYLIMIT_PFM VIN=VCE=2.2V, IOUT=1mA
-
100
-
200
300
%
%
%
①
③
③
MAXDTY
MINDTY
VIN=VCE=5.0V, VFB=0.72V
VIN=VCE=5.0V, VFB=0.88V
-
-
-
0
When connected to external components,
VCE=VIN=2.4V, IOUT=100mA
Efficiency (*2)
EFFI
-
<E-7>
-
%
①
LX SW "H" ON Resistance 1
LX SW "H" ON Resistance 2
LX SW "L" ON Resistance 1
LX SW "L" ON Resistance 2
RLxH1
RLxH2
RLxL1
RLxL2
VIN=VCE=5.0V, VFB=0.72V, ILX=100mA (*3)
VIN=VCE=3.6V, VFB=0.72V, ILX=100mA (*3)
VIN=VCE=5.0V (*4)
-
-
-
-
0.35
0.42
0.45
0.52
0.55
0.67
0.65
0.77
Ω
Ω
Ω
Ω
④
④
-
VIN=VCE=3.6V (*4)
-
LX SW "H" Leakage Current (*5)
ILeakH
VIN=VFB=5.0V, VCE=0V, VLX=0V
VIN=VCE=5.0V, VFB=0.72V (*7)
IOUT=30mA, -40℃≦Topr≦85℃,
-
600
-
0.01
800
1.00
1000
-
μA
mA
⑨
⑥
①
PFM Duty Limit (*9)
Output Voltage Temperature
Characteristics
ILIM
ΔVOUT
(VOUT ΔTopr)
/
±100
ppm/
V
℃
･
VFB=0.72V, Applied voltage to VCE
Voltage changes LX to “L” level (*10)
VFB=0.72V, Applied voltage to VCE
,
CE "H" Voltage
CE "L" Voltage
VCEH
0.65
VSS
-
-
VIN
③
③
,
VCEL
0.25
V
Voltage changes LX to “L” level (*10)
CE "H" Current
CE "L" Current
ICEH
ICEL
VIN=VCE=5.0V, VFB=0.72V
-0.1
-0.1
-
-
0.1
0.1
μA
μA
⑤
⑤
VIN=5.0V, VCE=0V, VFB=0.72V
When connected to external components,
VCE=0V→VIN, IOUT=1mA
Soft-start Time
Latch Time
tSS
-
0.25
-
0.40
20
ms
ms
①
⑦
VIN=VCE=5.0V, VFB=0.64V,
tLAT
1
Short Lx at 1Ω resistance(*6)
VIN=VCE=5.0V, VFB voltage which Decrease
VFB from 0.9V, Lx becomes “L” (*10) level
VIN=5.0V, LX=5.0V, VCE=0V, VFB=Open
Test Frequency=1MHz
Short Protection Threshold Voltage
VSHORT
0.150
0.200
0.250
V
⑦
CL Discharge
Inductance Value
RDCHG
L
200
300
1.5
450
Ω
⑧
-
-
-
-
-
μH
mA
Allowed Inductor Current
IDC
ΔT=40℃
700
-
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT(T)=Nominal Voltage, and the order of voltage application is VFB→VIN→VCE
NOTE:
(*1) Including hysteresis operating voltage range.
(*2) EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
(*3) ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
(*4) Design value
(*5) When temperature is high, a current of approximately 10μA (maximum) may leak.
(*6) Time until it short-circuits VOUT with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.
(*7) When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
(*8) When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*9) Current limit denotes the level of detection at peak of coil current.
(*10) “H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
(*11) IPFM and DTYLIMIT_PFM are defined only for the XCL209 series which have PFM control function.
7/22
TOREX [ Torex Semiconductor ]
