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PDF XC9103 Data sheet ( Hoja de datos )
| Número de pieza | XC9103 | |
| Descripción | Step-Up DC/DC Converters | |
| Fabricantes | Torex Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de XC9103 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
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XC9103/XC9104/XC9105 Series
Ceramic Capacitor Compatible, Step-up DC/DC Controllers
ETR0404_008
☆GreenOperation Compatible
■GENERAL DESCRIPTION
The XC9103/XC9104/XC9105 series are PWM, PWM/PFM auto switching /manual switching controlled universal step-up
DC/DC converter controllers.
Output will be stable no matter which load capacitors are used but should a low ESR capacitor be used, RSENSE of about 0.1Ω
will be required and phase compensation will be achieved. This allows the use of ceramic capacitors and enables to obtain lower
output ripple and small PCB design. Tantalum and electrolytic capacitors can also be used, in which case, RSENSE becomes
unnecessary.
With 0.9V internal voltage reference and by using externally connected two resistors, output voltage can be set freely within a
range of 1.5V to 30V. The series is available in 300 kHz and 180 kHz frequencies, the size of the external components can be
reduced. 100 kHz and 500 kHz are also available in custom options.
The XC9103 offers PWM operation. The XC9104 offers PWM/PFM automatic switching operation. The PWM operation is shifted to
the PFM operation automatically at light load so that it maintains high efficiency over a wide range of load currents. The XC9105
offers both PWM and PWM/PFM auto switching operations and it can be selected by external signal.
A current limiter circuit is built-in to the IC (except with the 500 kHz version) and monitors the ripple voltage on the FB pin.
Operation is shut down when the ripple voltage is more than 250mV. 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.
■APPLICATIONS
●E-book Readers / Electronic dictionaries
●Smart phones / Mobile phones
●Note PCs / Tablet PCs
●Digital audio equipments
●Multi-function power supplies
■FEATURES
Input Voltage Range : 0.9V ~ 10V
Supply Voltage Range : 1.8V ~ 10V
Output Voltage Range : 1.5V ~ 30V
Set freely with the reference voltage
0.9V(±2.0%) and two resistors
Oscillation Frequency : 100, 180, 300, 500kHz (±15%)
180, 300kHz only for XC9103/04/05B
type (with current limiter)
Output Current
Controls
: more than 400mA
(VIN=1.8V, VOUT=3.3V)
: PWM (XC9103)
PWM/PFM auto-switching (XC9104)
PWM/PFM manual switching
(XC9105)
High Efficiency
Stand-by Current
Load Capacitors
Current
Limiter Function
: 85% (TYP.)
: ISTB=1.0μA (MAX.)
: Low ESR capacitors compatible
: Operates when
ripple voltage=250mV
Also available without current limiter
(100kHz and 500kHz types are
available only without current limiter)
Packages
: SOT-25, USP-6B
Environmentally Friendly : EU RoHS Compliant, Pb Free
■TYPICAL APPLICATION CIRCUIT ■ TYPICAL PERFORMANCE
CHARACTERISTICS
1/25
1 page  
XC9103/XC9104/XC9105
Series
■ELECTRICAL CHARACTERISTICS
XC9103B092MR, XC9104B092MR, XC9105B092MR
XC9103D092MR, XC9104D092MR, XC9105D092MR
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
Output Voltage Range
FB Control Voltage
Supply Voltage Range
(*1)
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
VOUT
VOUTSET
VFB
VDD
VST1
VST2
VHLD
IDD1
IDD2
ISTB
fOSC
MAXDTY
PFMDTY
VLMT
EFFI
tSS
VCEH
VCEL
VPWMH
VPWML
REXTH
REXTL
ICEH
ICEL
IFBH
IFBL
VIN=VOUTSETx0.6, VDD=3.3V
IOUT=10mA, Using 2SD1628
Recommended circuit using 2SD1628,
IOUT=1.0mA
No external components, CE connected
to VDD, Voltage applied, FB=0V
Recommended circuit using 2SD1628,
IOUT=1.0mA
Same as VST2, VDD=3.3V
Same as IDD1, FB=1.2V
Same as IDD1, CE=0V
Same as IDD1
Same as IDD1
No load
(XC9104B/D, XC9105B/D)
Step input to FB (Pulse width: 2.0μs or
more), EXT=Low level voltage
(XC9103B, XC9104B, XC9105B)
Recommended circuit using XP161A1355
Same as IDD1
Same as IDD1
IOUT=1.0mA
IOUT=1.0mA
(XC9105B/D)
(XC9105B/D)
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD2, VEXT=0.4V
Same as IDD2, CE=VDD
Same as IDD2, CE=0V
Same as IDD2, FB=VDD
Same as IDD2, FB=1V
MIN.
3.234
1.5
0.882
1.8
-
-
-
-
-
-
153
75
20
170
-
5.0
0.65
-
VDD-0.2
-
-
-
-
-
-
-
(fOSC=180kHz)
TYP. MAX.
3.300 3.366
- 30.0
0.900 0.918
- 10.0
- 0.9
- 0.8
- 0.7
45 64
17 24
- 1.0
180 207
81 87
28 36
250 330
85
10.0
-
-
-
-
24
-
20.0
-
0.20
VDD-1.0
36
16 24
- 0.1
- - 0.1
- 0.1
- - 0.1
Ta=25℃
UNITS CIRCUIT
V①
V②
V④
V
V③
V④
V③
μA ④
μA ④
μA ⑤
kHz ④
%④
%①
mV ⑥
%①
ms ①
V⑤
V⑤
V①
V①
Ω④
Ω④
μA ⑤
μA ⑤
μA ⑤
μA ⑤
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.
5/25
5 Page 
■ TEST CIRCUITS
Circuit ①
OSC
Circuit ②
OSC
Circuit ③
OSC
Circuit ④
OSC
XC9103/XC9104/XC9105
Series
Circuit ⑤
Circuit ⑥
Pulse voltage is applied at the FB pin using the test circuit ①
11/25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet XC9103.PDF ] | |
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