XC9103/XC9104/XC9105 Series
■ELECTRICAL CHARACTERISTICS
XC9103B092MR, XC9104B092MR, XC9105B092MR
XC9103D092MR, XC9104D092MR, XC9105D092MR
(FOSC=180kHz)
Ta=25℃
UNITS
CIRCUIT
PARAMETER
Output Voltage
SYMBOL
VOUT
CONDITIONS
MIN.
TYP.
MAX.
3.234
3.300
3.366
V
①
②
VIN=VOUTSETx0.6, VDD=3.3V
IOUT=10mA, Using 2SD1628
Output Voltage Range
VOUTSET
VFB
1.5
0.882
1.8
-
0.900
-
30.0
0.918
10.0
V
V
V
FB Control Voltage
Supply Voltage Range
(*1)
④
VDD
Recommended circuit using 2SD1628,
IOUT=1.0mA
Operation Start Voltage
VST1
VST2
VHLD
-
-
-
-
-
-
0.9
0.8
0.7
V
V
V
③
④
③
Oscillation Start Voltage
No external components, CE connected
to VDD, Voltage applied, FB=0V
Recommended circuit using 2SD1628,
IOUT=1.0mA
(*1)
Operation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Cycle
PFM Duty Rate
IDD1
IDD2
Same as VST2, VDD=3.3V
Same as IDD1, FB=1.2V
Same as IDD1, CE=0V
-
-
45
17
-
64
24
μA
μA
μA
kHz
%
④
④
⑤
④
④
①
ISTB
-
1.0
207
87
FOSC
Same as IDD1
153
75
20
180
81
28
MAXDTY Same as IDD1
PFMDTY No load
(XC9104B/D, 9105B/D)
36
%
Step input to FB (Pulse width: 2.0μS
or more), EXT=Low level voltage
(XC9103B, 9104B, 9105B)
Overcurrent
VLMT
170
250
330
mV
⑥
Sense Voltage (*3)
Efficiency
Soft-Start Time
EFFI
TSS
Recommended circuit using XP161A1355
-
5.0
0.65
-
85
-
%
ms
V
①
①
⑤
⑤
①
①
10.0
20.0
-
CE “High” Voltage (*2)
CE “Low” Voltage (*2)
PWM “High” Voltage (*2)
PWM “Low” Voltage (*2)
EXT “High”
VCEH
VCEL
Same as IDD1
Same as IDD1
-
-
-
-
0.20
V
VPWMH
VPWML
IOUT=1.0mA
IOUT=1.0mA
(XC9105B/D) VDD-0.2
V
(XC9105B/D)
-
VDD-1.0
V
Same as IDD1, VEXT=VOUT-0.4V
Ω
REXTH
REXTL
-
24
16
36
④
④
On Resistance
EXT “Low”
Same as IDD1, VEXT=0.4V
-
24
Ω
On Resistance
CE “High Current
CE “Low” Current
FB “High” Current
FB “Low” Current
ICEH
ICEL
IFBH
IFBL
Same as IDD2, CE=VDD
Same as IDD2, CE=0V
Same as IDD2, CE=VDD
Same as IDD2, CE=0V
-
-
-
-
-
-
-
-
0.1
- 0.1
0.1
μA
μA
μA
μA
⑤
⑤
⑤
⑤
- 0.1
Test Conditions: Unless otherwise stated, CL: ceramic, recommended MOSFET should be connected.
VOUT=3.3V, VIN=2.0V, IOUT=170mA
NOTE:
*1 Although the IC starts step-up operations from a VDD of 0.8V, the output voltage and oscillation frequency are stabilized at VDD>1.8V.
Therefore, a VDD of more than 1.8V is recommended when VDD is supplied from VIN 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 VDD -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 VDD -1.0V and more than VCEH.
*3 The overcurrent limit circuit of this IC is designed to monitor the ripple voltage so please select your external components carefully to
prevent VLMT 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 ]
