XCL208/XCL209
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
3) XCL208F083DR/XCL209F083DR
PARAMETER
FB Voltage
Operating Voltage Range
Maximum Output Current
UVLO Voltage
Supply Current (XCL208)
Supply Current (XCL209)
Stand-by Current
Oscillation Frequency
PFM Switching Current
PFM Duty Limit
(*11)
(*11)
Ta=25℃
CONDITIONS
V
IN
=V
CE
=5.0V, V
FB
voltage which Decrease
V
FB
from 0.9V, Lx becomes “L”
(*10)
SYMBOL
V
FB
V
IN
I
OUTMAX
V
UVLO
I
DD
I
STB
f
OSC
I
PFM
DTY
LIMIT_PFM
MAXDTY
MINDTY
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.
level
0.784
1.8
TYP.
0.800
-
-
1.40
46
21
0
3.00
<E-5>
200
-
-
<E-7>
0.35
0.42
0.45
0.52
0.01
800
±100
-
-
-
-
0.25
-
0.200
300
1.5
700
MAX.
0.816
6.0
-
1.78
65
35
1.0
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
0.40
20
0.250
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
③
①
①
③
②
③
①
⑩
①
③
③
①
④
④
-
-
⑨
⑥
①
③
③
⑤
⑤
①
⑦
⑦
⑧
-
-
V
IN
=3.2V, V
CE
=1.0V,
(*8)
When connected to external components
V
CE
=V
IN
, V
FB
=0.4V,
Voltage which Lx pin holding “L” level
V
IN
=V
CE
= 5.0V, V
FB
=0.88V
V
IN
=5.0V, V
CE
=0V, V
FB
=0.88V
When connected to external components,
V
IN
=3.2V, V
CE
=1.0V, I
OUT
=100mA
When connected to external components,
V
IN
=3.2V, V
CE
= V
IN
, I
OUT
=1mA
V
IN
=V
CE
=2.2V, I
OUT
=1mA
V
IN
=V
CE
=5.0V, V
FB
=0.72V
V
IN
=V
CE
=5.0V, V
FB
=0.88V
When connected to external components,
V
CE
=V
IN
=2.4V, I
OUT
=100mA
V
IN
=V
CE
=5.0V, V
FB
=0.72V, I
LX
=100mA
V
IN
=V
CE
=3.6V, V
FB
=0.72V, I
LX
=100mA
V
IN
=V
CE
=5.0V
V
IN
=V
CE
=3.6V
(*4)
(*4)
(*3)
(*3)
(*1), (*10)
400
1.00
-
-
-
2.55
<E-4>
-
100
-
-
-
-
-
-
-
600
-
0.65
V
SS
-0.1
-0.1
-
1
0.150
200
-
-
Maximum Duty Cycle
Minimum Duty Cycle
Efficiency
(*2)
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
LX SW "H" Leakage Current
PFM Duty Limit
(*9)
(*5)
V
IN
=V
FB
=5.0V, V
CE
=0V, V
LX
=0V
V
IN
=V
CE
=5.0V, V
FB
=0.72V
(*7)
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
C
L
Discharge
Inductance Value
Allowed Inductor Current
I
OUT
=30mA, -40℃≦Topr≦85℃,
V
FB
=0.72V, Applied voltage to V
CE
,
Voltage changes L
X
to “L” level
Voltage changes L
X
to “L” level
V
IN
=V
CE
=5.0V, V
FB
=0.72V
V
IN
=5.0V, V
CE
=0V, V
FB
=0.72V
When connected to external components,
V
CE
=0V→V
IN
, I
OUT
=1mA
V
IN
=V
CE
=5.0V, V
FB
=0.64V,
Short Lx at 1Ω resistance
(*6)
(*10)
V
FB
=0.72V, Applied voltage to V
CE
,
(*10)
V
IN
=V
CE
=5.0V, V
FB
voltage which Decrease
V
FB
from 0.9V, Lx becomes “L”
Test Frequency=1MHz
ΔT=40℃
(*10)
level
V
IN
=5.0V, L
X
=5.0V, V
CE
=0V, V
FB
=Open
Test conditions: Unless otherwise stated, V
IN
=5.0V, V
OUT(T)
=Nominal Voltage, and the order of voltage application is
V
FB
→V
IN
→V
CE
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)
I
PFM
and DTY
LIMIT_PFM
are defined only for the XCL209 series which have PFM control function.
7/22
TOREX [ TOREX SEMICONDUCTOR ]
