XCL208/XCL209
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
2) XCL208Bxx3DR/XCL209Bxx3DR
PARAMETER
Output Voltage
Operating Voltage Range
Maximum Output Current
UVLO Voltage
Supply Current (XCL208)
Supply Current (XCL209)
Stand-by Current
Oscillation Frequency
PFM Switching Current
(*11)
Ta=25℃
CONDITIONS
When connected to external components,
V
IN
=V
CE
=5.0V, I
OUT
=30mA
V
IN
=V
OUT(T)
+2.0V, V
CE
=1.0V,
(*8)
When connected to external components
V
CE
=V
IN
, V
OUT
=0V,
(*1),(*10)
Voltage which Lx pin holding “L” level
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT(T)
×1.1
V
IN
=5.0V, V
CE
=0V, V
OUT
=V
OUT(T)
×1.1
When connected to external components,
V
IN
=V
OUT(T)
+2.0V, V
CE
=1.0V, I
OUT
=100mA
When connected to external components,
V
IN
=V
OUT(T)
+2.0V, V
CE
=V
IN
, I
OUT
=1mA
V
CE
=V
IN
=<C-1>, I
OUT
=1mA
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT(T)
×0.9
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT(T)
×1.1
When connected to external components,
V
CE
=V
IN
=V
OUT(T)
+1.2V, I
OUT
=100mA
V
IN
=V
CE
=5.0V, V
OUT
=0V, I
LX
=100mA
(*3)
V
IN
=V
CE
=3.6V, V
OUT
=0V, I
LX
=100mA
(*4)
V
IN
=V
CE
=5.0V
(*4)
V
IN
=V
CE
=3.6V
V
IN
=V
OUT
=5.0V, V
CE
=0V, V
LX
=0V
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT(T)
×0.9V
I
OUT
=30mA, -40℃≦Topr≦85℃,
V
OUT
=0V, Applied voltage to V
CE
Voltage
*10
changes Lx to “L” level
（ ）
V
OUT
=0V, Applied voltage to V
CE
Voltage
*10
changes Lx to “L” level
（ ）
V
IN
=V
CE
=5.0V, V
OUT
=0V
V
IN
=5.0V, V
CE
=0V, V
OUT
=0V
When connected to external components,
V
CE
=0V→V
IN
, I
OUT
=1mA
V
IN
=V
CE
=5.0V, V
OUT
=0.8×V
OUT(T)
,
(*6)
Short Lx at 1Ω resistance
Sweeping V
OUT
, V
IN
=V
CE
=5.0V,
Short Lx at 1Ω resistance, V
OUT
voltage which
Lx becomes “L” level within 1ms
V
IN
=5.0V, L
X
=5.0V, V
CE
=0V, V
OUT
=Open
Test Frequency=1MHz
ΔT=+40℃
(*7)
(*3)
SYMBOL
V
OUT
V
IN
I
OUTMAX
V
UVLO
I
DD
I
STB
f
OSC
I
PFM
DTY
LIMIT_PFM
D
MAX
D
MIN
EFFI
R
LxH1
R
LxH2
R
LxL1
R
LxL2
I
LeakH
I
LIM
ΔV
OUT
/
(V
OUT
½ΔTopr)
V
CEH
V
CEL
I
CEH
I
CEL
t
SS
t
LAT
V
SHORT
R
DCHG
L
I
DC
MIN.
<E-1>
2.0
400
1.00
-
-
-
2.55
<E-4>
-
100
-
-
-
-
-
-
-
600
-
0.65
V
SS
-0.1
-0.1
-
1
<E-8>
200
-
-
TYP.
<E-2>
-
-
1.40
46
21
0
3.00
<E-5>
200
-
-
<E-7>
0.35
0.42
0.45
0.52
0.01
800
±100
-
-
-
-
<E-11>
-
<E-9>
300
1.5
700
MAX.
<E-3>
6.0
-
1.78
65
35
1
3.45
<E-6>
300
-
0
-
0.55
0.67
0.65
0.77
1.00
1000
-
V
IN
0.25
0.1
0.1
<E-12>
20
<E-10>
450
-
-
UNIT
V
V
mA
V
μA
μA
MHz
mA
%
%
%
%
Ω
Ω
Ω
Ω
μA
mA
ppm/℃
V
V
μA
μA
ms
ms
V
Ω
μH
mA
CIRCUIT
①
①
①
③
②
②
①
⑩
①
③
③
①
④
④
-
-
⑨
⑥
①
③
③
⑤
⑤
①
⑦
⑦
⑧
-
-
PFM Duty Limit
Maximum Duty Cycle
Minimum Duty Cycle
Efficiency
(*2)
(*11)
L
X
SW "H" ON Resistance 1
L
X
SW "H" ON Resistance 2
L
X
SW "L" ON Resistance 1
L
X
SW "L" ON Resistance 2
L
X
SW "H" Leakage Current
Current Limit
(*9)
(*5)
Output Voltage Temperature
Characteristics
CE "H" Voltage
CE "L" Voltage
CE "H" Current
CE "L" Current
Soft-start Time
Latch Time
Short Protection Threshold Voltage
CL Discharge
Inductance Value
Allowed Inductor Current
Test conditions: Unless otherwise stated, V
IN
=5.0V, V
OUT (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)= (V
IN
- 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 V
OUT
with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.
(*7)
When V
IN
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”=V
IN
~V
IN
-1.2V, “L”=+0.1V~-0.1V
(*11)
IPFM and DTY
LIMIT_PFM
are defined only for the XCL209 series which have PFM control function. (Not for the XCL 208 series)
6/22
TOREX [ TOREX SEMICONDUCTOR ]
