XCL205/XCL206/XCL207
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
●XCL205A183AR/XCL206A183AR/XCL207A183AR,
V
OUT
=1.8V, f
OSC
=3.0MHz, Ta=25℃
PARAMETER
Output Voltage
Operating Voltage Range
Maximum Output Current
UVLO Voltage
Supply Current (XCL205)
Supply Current (XCL206, XCL207)
Stand-by Current
Oscillation Frequency
PFM Switching Current
PFM Duty Limit
(*12)
(*12)
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
L
�½�
H
R
L
�½�
H
R
L
�½�
L
R
L
�½�
L
ILeakH
ILeakL
I
LIM
△V
OUT
/
(V
OUT
・△topr)
V
CEH
V
CEL
CONDITIONS
When connected to external components,
V
IN
=V
CE
=5.0V, I
OUT
=30mA
V
IN
=V
OUT(E)
+2.0V, V
CE
=1.0V
(*9)
When connected to external components
V
CE
=V
IN
,V
OUT
=0V,
(*1, *11)
Voltage which Lx pin holding “L” level
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT(T)
×1.1V
V
IN
=5.0V, V
CE
=0V, V
OUT
=V
OUT(T)
×1.1V
When connected to external components,
V
IN
=V
OUT(T)
+2.0V,V
CE
=1.0V, I
OUT
=100mA
When connected to external components,
(*12)
V
IN
=V
OUT(T)
+2.0V, V
CE
=V
IN
, I
OUT
=1mA
V
CE
= V
IN
=(C-1) I
OUT
=1mA
(*12)
MIN.
1.764
2.0
600
1.00
-
-
-
2550
170
-
100
-
-
-
-
-
-
-
-
900
-
0.65
V
SS
TYP.
1.800
-
-
1.40
46
21
0
3000
220
200
-
-
85
0.35
0.42
0.45
0.52
0.01
0.01
1050
±100
-
-
MAX.
1.836
6.0
-
1.78
65
35
1.0
3450
270
300
-
0
-
0.55
0.67
0.66
0.77
1.0
1.0
1350
-
V
IN
0.25
UNITS CIRCUIT
V
V
mA
V
μA
μA
kHz
mA
%
%
%
%
Ω
Ω
Ω
Ω
μA
μA
mA
ppm/
℃
V
V
①
①
①
③
②
②
①
⑩
①
③
③
①
④
④
-
-
⑤
⑤
⑥
①
③
③
Maximum Duty Cycle
Minimum Duty Cycle
Efficiency
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
(*5)
Lx SW "H" Leak Current
(*5)
Lx SW "L" Leak Current
(*10)
Current Limit
Output Voltage
Temperature Characteristics
CE "H" Voltage
CE "L" Voltage
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT (T)
×0.9V
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT (T)
×1.1V
When connected to external components,
V
CE
=V
IN
＝V
OUT (T)
+1.2V, I
OUT
= 100mA
(*3)
V
IN
=V
CE
=5.0V, V
OUT
=0V, IL
X
=100mA
(*3)
V
IN
=V
CE
=3.6V, V
OUT
=0V, IL
X
=100mA
(*4)
V
IN
=V
CE
=5.0V
(*4)
V
IN
=V
CE
=3.6V,
V
IN
=V
OUT
=5.0V, V
CE
=0V, L
X
=0V
V
IN
=V
OUT
=5.0V, V
CE
=0V, L
X
= 5.0V
(*8)
V
IN
=V
CE
=5.0V, V
OUT
=V
OUT (E)
×0.9V
I
OUT
=30mA
-40℃≦Topr≦85℃
V
OUT
=0V, Applied voltage to V
CE
,
(*11)
Voltage changes Lx to “H” level
V
OUT
=0V, Applied voltage to V
CE
,
(*11)
Voltage changes Lx to “L” level
When connected to external components,
(*6),
Voltage which oscillation
I
OUT
=1mA
(*13)
frequency becomes 2550kHz≦f
OSC
≦3450kHz
When connected to external components,
(*6)
I
OUT
=1mA , Voltage which oscillation
(*13)
frequency becomes f
OSC
＜2550kHz
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)
(*7)
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
Test frequency =1MHz
ΔT=40℃
PWM "H" Level Voltage
(*13)
V
PWMH
-
-
V
IN
- 1.0
V
①
PWM "L" Level Voltage
CE "H" Current
CE "L" Current
Soft Start Time
Latch Time
Short Protection
Threshold Voltage
(*13)
V
PWML
I
CEH
I
CEL
t
SS
t
LAT
V
SHORT
L
I
DC
V
IN
-
0.25
- 0.1
- 0.1
0.5
1.0
0.675
-
-
-
-
-
0.9
-
0.900
1.5
1000
-
0.1
0.1
2.5
20
1.125
-
-
V
μA
μA
ms
ms
V
μH
mA
①
⑤
⑤
①
⑦
⑦
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: The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than V
IN
minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than V
IN
minus 1.0V and equal to or greater than V
CEH
.
*7: Time until it short-circuits V
OUT
with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
*8: When V
IN
is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
*9: 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.
*10: Current limit denotes the level of detection at peak of coil current.
*11: “H”=V
IN
~V
IN
-1.2V, “L”=+0.1V~-0.1V
*12: IPFM and DTY
LIMIT_PFM
are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
*13: V
PWMH
and V
PWML
are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
5/26
TOREX [ TOREX SEMICONDUCTOR ]
