XCL208/XCL209 Series
■ELECTRICAL CHARACTERISTICS (Continued)
Ta=25℃
2) XCL208Bxx3DR/XCL209Bxx3DR
PARAMETER
SYMBOL
CONDITIONS
When connected to external components,
VIN=VCE=5.0V, IOUT=30mA
MIN.
<E-1>
2.0
TYP.
<E-2>
-
MAX.
<E-3>
6.0
UNIT CIRCUIT
Output Voltage
VOUT
V
V
①
①
Operating Voltage Range
VIN
VIN=VOUT(T)+2.0V, VCE=1.0V,
Maximum Output Current
UVLO Voltage
IOUTMAX
VUVLO
400
-
-
mA
V
①
③
When connected to external components (*8)
VCE=VIN, VOUT=0V,
1.00
1.40
1.78
Voltage which Lx pin holding “L” level (*1),(*10)
Supply Current (XCL208)
Supply Current (XCL209)
Stand-by Current
-
-
-
46
21
0
65
35
1
IDD
VIN=VCE=5.0V, VOUT=VOUT(T) ×1.1
μA
μA
②
②
ISTB
VIN=5.0V, VCE=0V, VOUT=VOUT(T) ×1.1
When connected to external components,
VIN=VOUT(T)+2.0V, VCE=1.0V, IOUT=100mA
Oscillation Frequency
fOSC
2.55
3.00
3.45
MHz
mA
①
⑩
When connected to external components,
VIN=VOUT(T)+2.0V, VCE=VIN , IOUT=1mA
PFM Switching Current (*11)
IPFM
<E-4>
<E-5>
<E-6>
PFM Duty Limit (*11)
Maximum Duty Cycle
Minimum Duty Cycle
DTYLIMIT_PFM VCE=VIN=<C-1>, IOUT=1mA
-
100
-
200
-
-
300
-
0
%
%
%
①
③
③
DMAX
DMIN
VIN=VCE=5.0V, VOUT=VOUT(T)×0.9
VIN=VCE=5.0V, VOUT=VOUT(T)×1.1
When connected to external components,
VCE=VIN=VOUT(T)+1.2V, 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, VOUT=0V, ILX=100mA (*3)
VIN=VCE=3.6V, VOUT=0V, 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)
Current Limit (*9)
ILeakH
VIN=VOUT=5.0V, VCE=0V, VLX=0V
VIN=VCE=5.0V, VOUT=VOUT(T)×0.9V (*7)
IOUT=30mA, -40℃≦Topr≦85℃,
-
600
-
0.01
800
1.00
1000
-
μA
⑨
⑥
①
ILIM
ΔVOUT
mA
Output Voltage Temperature
Characteristics
/
±100
ppm/℃
(VOUT
･
ΔTopr)
VOUT=0V, Applied voltage to VCE Voltage
changes Lx to “L” level
CE "H" Voltage
CE "L" Voltage
VCEH
0.65
VSS
-
VIN
V
V
③
③
*10
）
（
VOUT=0V, Applied voltage to VCE Voltage
VCEL
0.25
*10
）
（
changes Lx to “L” level
VIN=VCE=5.0V, VOUT=0V
-
CE "H" Current
CE "L" Current
ICEH
ICEL
-0.1
-0.1
-
-
0.1
0.1
μA
μA
⑤
⑤
VIN=5.0V, VCE=0V, VOUT=0V
When connected to external components,
VCE=0V→VIN, IOUT=1mA
Soft-start Time
Latch Time
tSS
-
<E-11> <E-12>
ms
ms
①
⑦
VIN=VCE=5.0V, VOUT=0.8×VOUT(T)
Short Lx at 1Ω resistance(*6)
Sweeping VOUT, VIN=VCE=5.0V,
,
tLAT
1
-
20
Short Protection Threshold Voltage
VSHORT
<E-8>
<E-9>
<E-10>
V
⑦
Short Lx at 1Ω resistance, VOUT voltage which
Lx becomes “L” level within 1ms
CL Discharge
RDCHG
VIN=5.0V, LX=5.0V, VCE=0V, VOUT=Open
200
300
450
Ω
⑧
Inductance Value
Allowed Inductor Current
L
IDC
Test Frequency=1MHz
ΔT=+40℃
-
-
1.5
700
-
-
μH
mA
-
-
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T)=Nominal Voltage
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. (Not for the XCL 208 series)
6/22
TOREX [ Torex Semiconductor ]
