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XC9120B091ER Datasheet(PDF) 4 Page - Torex Semiconductor

Part # XC9120B091ER
Description  Step-Up DC/DC Controller IC,
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Manufacturer  TOREX [Torex Semiconductor]
Direct Link  http://www.torex.co.jp
Logo TOREX - Torex Semiconductor

XC9120B091ER Datasheet(HTML) 4 Page - Torex Semiconductor

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XC9120/XC9121/XC9122 Series
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNIT
CIRCUIT
FB Voltage
VFB
0.882
0.900
0.918
V
Supply Voltage Range
(*1)
VDD
1.8
-
6.0
V
Output Voltage Setting
Range
VOUTSET
Recommended circuit using 2SD1628,
VIN=VOUTSET×0.6, VDD=3.0V,
IOUT=1.0mA
1.5
-
30.0
V
Operation Start Voltage
VST1
Recommended circuit using 2SD1628
VOUT=3.3V, IOUT=1.0mA
-
-
0.9
V
Oscillation Start Voltage
(*1)
VST2
No external components,
CE connected to VDD, Voltage applied,
FB=0V
-
-
0.8
V
Operation Hold Voltage
VHLD
Recommended circuit using 2SD1628
VOUT=3.3V, IOUT=1.0mA
-
-
0.7
V
Supply Voltage 1
IDD1
Same as VST2, VDD=3.0V
-
25
50
μA
Supply Voltage 2
IDD2
Same as IDD1, FB=1.2V
-
13
30
μA
Stand-by Current
ISTB
Same as IDD1, CE=0V
-
-
1.0
μA
Oscillation Frequency
FOSC
Same as IDD1
85
100
115
kHz
Maximum Duty Ratio
MAXDTY Same as IDD1
89
93
96
%
PFM Duty Ratio
PFMDTY No Load (XC9121B/D, XC9122B/D types)
24
32
40
%
Over Current Sense
Voltage (*2)
VLMT
Step input to FB
(Pulse width: 2.0μs or more)
EXT= Low level voltage
(XC9120/9122/9122B type)
150
250
400
mV
Efficiency (*3)
EFFI
IOUT=10mA
-
85
-
%
Soft-Start Time
TSS
5.0
10.0
20.0
ms
CE "H" Voltage
VCEH
Same as IDD1
0.65
-
-
V
CE "L" Voltage
VCEL
Same as IDD1
-
-
0.20
V
EXT "H" ON Resistance
REXTH
Same as IDD1, VEXT=VOUT-0.4V
-
24
36
Ω
EXT "L" ON Resistance
REXTL
Same as IDD1, VEXT=0.4V
-
16
24
Ω
PWM ‘H’ Voltage (*4)
VPWMH
IOUT=1mA
(XC9122B/D type)
VDD-0.2
-
-
V
PWM ‘L’ Voltage (*4)
VPWML
IOUT=1mA
(XC9122B/D type)
-
-
VDD-1.0
V
CE "H" Current
ICEH
Same as IDD2, CE=VDD
-
-
0.1
μA
CE "L" Current
ICEL
Same as IDD2, CE=0V
-
-
-0.1
μA
FB "H" Current
IFBH
Same as IDD2, FB=VDD
-
-
0.1
μA
FB "L" Current
IFBL
Same as IDD2, FB=0V
-
-
-0.1
μA
Test Conditions: Unless otherwise stated, CL: ceramic, recommended MOSFET should be connected.
When VOUT is set at 15V, VIN=VDD=3.6V.
NOTE:
*1: Although the IC starts step-up operations from a VDD=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: 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
operation, which in turn causes the IC’s operations to stop, the IC resumes its operation with a toggle of the CE pin or by turning the power
supply back on.
*3: EFFI: {(output voltage) x (output current)} / {(input voltage) x (input current)} x 100
*4: The XC9122 series’ CE pin combines PWM/PFM external switch pin. In the operation state, PWM control becomes effective when the CE
pin is more than VDD-0.2V. When the CE pin is less than VDD-1.0V and more than VCEH, PWM/PFM automatic switching control becomes
effective with 32% duty.
■ELECTRICAL CHARACTERISTICS
(FOSC=100kHz)
Ta=25℃
XC9120B091, XC9121B091, XC9122B091
XC9120D091, XC9121D091, XC9122D091


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