XC9103/XC9104/XC9105
Series
■ELECTRICAL
CHARACTERISTICS
XC9103B092MR, XC9104B092MR, XC9105B092MR
XC9103D092MR, XC9104D092MR, XC9105D092MR
PARAMETER
Output Voltage
Output Voltage Range
FB Control Voltage
Supply Voltage Range
(*1)
SYMBOL
V
OUT
V
OUTSET
V
FB
V
DD
V
ST1
V
ST2
V
HLD
I
DD1
I
DD2
I
STB
FOSC
MAXDTY
PFMDTY
V
LMT
EFFI
T
SS
V
CEH
V
CEL
V
PWMH
V
PWML
R
EXTH
R
EXTL
I
CEH
I
CEL
I
FBH
I
FBL
CONDITIONS
V
IN=
V
OUTSET
x0.6, V
DD
=3.3V
I
OUT
=10mA, Using 2SD1628
MIN.
3.234
1.5
0.882
1.8
(FOSC=180kHz)
TYP.
MAX.
3.300
-
0.900
-
-
-
-
45
17
-
180
81
28
250
85
10.0
-
-
-
-
24
16
-
-
-
-
3.366
30.0
0.918
10.0
0.9
0.8
0.7
64
24
1.0
207
87
36
330
-
20.0
-
0.20
V
DD
-1.0
36
24
0.1
- 0.1
0.1
- 0.1
Ta=25℃
UNITS
CIRCUIT
V
V
V
V
V
V
V
μA
μA
μA
kHz
%
%
mV
%
ms
V
V
V
V
Ω
①
②
④
Operation Start Voltage
Oscillation Start Voltage
(*1)
Operation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Cycle
PFM Duty Rate
Overcurrent
Sense Voltage
(*3)
Efficiency
Soft-Start Time
CE “High” Voltage
(*2)
CE “Low” Voltage
(*2)
PWM “High” Voltage
(*2)
PWM “Low” Voltage
(*2)
EXT “High”
On Resistance
EXT “Low”
On Resistance
CE “High Current
CE “Low” Current
FB “High” Current
FB “Low” Current
Recommended circuit using 2SD1628,
I
OUT
=1.0mA
No external components, CE connected
to V
DD
, Voltage applied, FB=0V
Recommended circuit using 2SD1628,
I
OUT
=1.0mA
Same as V
ST2
, V
DD
=3.3V
Same as I
DD1
, FB=1.2V
Same as I
DD1
, CE=0V
Same as I
DD1
Same as I
DD1
No load
(XC9104B/D, 9105B/D)
Step input to FB (Pulse width: 2.0μS
or more), EXT=Low level voltage
(XC9103B, 9104B, 9105B)
Recommended circuit using XP161A1355
Same as I
DD1
Same as I
DD1
I
OUT
=1.0mA
(XC9105B/D)
I
OUT
=1.0mA
(XC9105B/D)
Same as I
DD1
, V
EXT
=V
OUT
-0.4V
Same as I
DD1
, V
EXT
=0.4V
Same as I
DD2
, CE=V
DD
Same as I
DD2
, CE=0V
Same as I
DD2
, CE=V
DD
Same as I
DD2
, CE=0V
-
-
-
-
-
-
153
75
20
170
-
5.0
0.65
-
V
DD
-0.2
-
-
-
-
-
-
-
③
④
③
④
④
⑤
④
④
①
⑥
①
①
⑤
⑤
①
①
④
④
⑤
⑤
⑤
⑤
Ω
μA
μA
μA
μA
Test Conditions: Unless otherwise stated, CL: ceramic, recommended MOSFET should be connected.
V
OUT
=3.3V, V
IN
=2.0V, I
OUT
=170mA
NOTE:
*1 Although the IC starts step-up operations from a V
DD
of 0.8V, the output voltage and oscillation frequency are stabilized at V
DD
>1.8V.
Therefore, a V
DD
of more than 1.8V is recommended when V
DD
is supplied from V
IN
or other power sources.
*2 With the XC9105 series, the CE pin also serves as a PWM/PFM switching pin. In operation, PWM control is selected when the voltage
at the CE pin is more than V
DD
-0.2V. On the other hand, PWM/PFM automatic switching control at a duty = 25% is selected when
the voltage at the CE pin is less than V
DD
-1.0V and more than V
CEH
.
*3 The overcurrent limit circuit of this IC is designed to monitor the ripple voltage so please select your external components carefully to
prevent V
LMT
being reached under low temperature conditions as well as normal operating conditions. Following current limiter
circuit operations, which in turn causes the IC's operations to stop, the operations of the IC can be returned to normal with a toggle of
the CE pin or by turning the power supply back on.
4/23
TOREX [ TOREX SEMICONDUCTOR ]
