The XC9110/9111 series is a group of PFM controlled step-up DC/DC converter/controller ICs designed to generate low supply
voltage by the combination of PFM control and CMOS structure. The series is ideal for applications where a longer battery life is
needed such as in portable communication equipment. With a built-in 2.5ΩN-channel driver transistor, the XC9110A/C/E and
XC9111A/C/E types provide a step-up operation by using only a coil, a capacitor, and a diode connected externally.
The XC9110/9111B, D and F versions can be used with an external transistor for applications requiring larger currents.
Output voltage is internally programmable in a range from 1.5V to 7.0V in increments of 0.1V (accuracy:± 2.5%).
Maximum oscillation frequency is set to 100kHz for XC9110/9111 series. (At light loads, it is set to 180kHz for the XC9111
series.) Options include products equipped with a CE pin (C and D versions) that allows the IC to be shut down thereby
reducing supply current and with separated VDD/VOUT pins (E and F versions) to separate the power supply block and the
output voltage detect block. With the XC9110 series, maximum duty cycle is set to 75% (VDD=3.3V) making it suitable for
use with large current operations. The XC9111 series automatically switches duty ratio between 56% & 75% (VDD=3.3V)
when it senses changes in load to drop output ripple voltage and can support both large and small currents. The external
transistor types (B/D/F types) can be provided for applications, which require larger currents
■APPLICATIONS
●Mobile phones
●Various palm top equipment
●Cameras, VCRs
●Various portable equipment
■ FEATURES
Operating (Input) Range
Output Voltage Range : 1.5V~7.0V in 0.1V increments
Output Accuracy : ±2.5%
Max Oscillation Frequency : 100 kHz ±15%
180 kHz (at 56% duty of XC9111)
Built-in Switch Types : A/C/E type
N-ch FET On-Resistance : 2.5Ω@ V
External Transistor Types : B/D/F type
Lx Limit Voltage : E type: more than V
: A/C type: more than V
Max Duty Cycles : 75% (for XC9110)
: 56%/75% two steps (for XC9111)
Low Supply Current : 2.0μA @ V
Operating Ambient Temperature
Packages : SOT-23 ,SOT89 (for XC9111),
SOT-25, USP-6C
Environmentally Friendly: EU RoHS Compliant, Pb Free
.
: 0.9V ~ 10.0V
: -40℃~+85℃
=3.0V
DD
OUT
=3V
=2.0V
DD
OUT
=2.0V
■TYPICAL APPLICATION CIRCUIT
●C type circuit
54
(TOP VIEW)
SOT-25
23
1
+
SD
CL
(Tantalum)
GND
VOUT
VIN
L
CIN
+
CE
■TYPICAL PERFORMANCE
CHARACTERISTICS
C9111E331MR
L=100μH(CR54), CL47μF(Tantalum)
80
60
40
Effic iency: EFFI(% )
VIN=0.9V
20
0
05 01 001502 002503 00
1.5V
1.2V
Output Current:IOUT(mA)
SD: XBS104S14R-G
2.4V
3.0V
1/36
XC9110/XC9111Series
■PIN CONFIGURATION
SOT-23 (TOP VIEW)
■PIN ASSIGNMENT
●
XC9111A/B
Lx/EXT
54
123
CE/V OUT
V OUT/V DD
SOT-25 (TOP VIEW)
PIN NUMBER
SOT-23 SOT-89
A B A B
1 1 1 1 VSS Ground
3 3 2 2 VOUTOutput Voltage Montior, Internal Power Supply
2 - 3 - LX Switch
*The dissipation pad for the USP-6C package
should be solder-plated in recommended mount
pattern and metal masking so as to enhance
mounting strength and heat release. If the pad
needs to be connected to other pins, it should be
connected to the pin No.1.
PIN NAME FUNCTIONS
PIN NAME FUNCTIONS
External switching transistor drive
<Connect to the gate pin of N-ch Power MOSFET>
The “-G” suffix denotes Halogen and Antimony free as well as being fully RoHS compliant.
■BLOCK DIAGRAMS
●XC9111 A and B series
(*1)
Note: The XC9110 series, Tr. Built-in type, uses the Lx pin and the XC9111 series, external Tr. Type, uses the EXT pin.
The duty ratio of the XC9111 series automatically varies between 56% (oscillation frequency 180kHz) and 75%
(oscillation frequency (f
* The duty ratio depends on power supply. Please refer to the electrical characteristics on duty against output voltage
you use.
: PFM control, 56% / 75% duty variable
A VDD / V
B VDD / V
CE Function
C CE pin (5 pin) Built-in Transistor
D CE pin (5 pin) External Transistor
E VDD / V
F V
Output Voltage 15 ~ 70
Maximum Oscillation
Frequency
1 100kHz
MR
Packages
(Order Unit)
MR-G
PR
PR-G
ER
ER-G
) 100kHz). The VLx limit function only applies to the XC9110/9111 A types.
OSC
common type (for XC9111series) Built-in Transistor
OUT
common type (for XC9111series) External Transistor
Note: The XC9110 series, Tr. Built-in type, uses the Lx pin and the XC9111 series, external Tr. Type, uses the EXT pin.
The XC9110 series' duty ratio is 75% and oscillation frequency (f
automatically varies between 56% (oscillation frequency 180kHz) and 75% (oscillation frequency (f
V
Lx limit function only applies to the XC9110/9111 C versions.
* The duty ratio depends on power supply. Please refer to the electrical characteristics on duty against output voltage
you use.
●XC9111 E and F series
Note: The XC9110 series, Tr. Built-in type, uses the Lx pin and the XC9111 series, external Tr. Type, uses the EXT pin.
The XC9110 / 9111 series E and F series have the V
oscillation frequency (f
56% (oscillation frequency 180kHz) and 75% (oscillation frequency (f
The V
Lx limit function only applies to the XC9110/9111 C versions.
* The duty ratio depends on power supply.
Please refer to the electrical characteristics on duty against output voltage you use.
) is 100kHz. The duty ratio of the XC9111 series
OSC
) is 100kHz. The duty ratio of the XC9111 series automatically varies between
OSC
DD pin. The XC9110 series' duty ratio is 75% and
) 100kHz).
OSC
) 100kHz). The
OSC
XC9110/XC9111
Series
5/36
XC9110/XC9111Series
■ELECTRICAL CHARACTERISTICS
PAR AMETER SYMBOL RATINGS UNITS
VOUT Input Voltage VOUT– 0.3 ~ 12.0 V
Lx Pin Voltage VLx– 0.3 ~ 12.0 V
Lx Pin Current ILx 400 mA
EXT Pin Voltage VEXT VSS – 0.3 ~ VOUT+0.3 V
EXT Pin Current IEXT±100 mA
CE Input Voltage VCE– 0.3 ~ 12.0 V
VDD Input Voltage VDD– 0.3 ~ 12.0 V
SOT-23, 25 250
Power Dissipation
SOT-89 500
USP-6C
Operating Ambient Temperature Topr – 40 ~ + 85 ℃
Storage Temperature Tstg – 55 ~ +125 ℃
Pd
* Define as VSS with a standard of all the voltage.
120
mW
6/36
XC9110/XC9111
Series
■ ABSOLUTE MAXIMUM RATINGS
XC9111Axx1MR
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Output Voltage VOUTConnected to external components ×0.975VOUT×1.025 V ①
Output Voltage Temperature
Characteristics
△VOUT
△
V
OUT
・△
topr
Connected to external components
- 40℃≦Topr≦85℃
- ±100 -
Maximum Input Voltage VIN 10 - - V ①
Operating Start Voltage VST1
OUT=1mA,
Connected to external components
- 0.8 0.9 V ①
I
Oscillation Start Voltage VST2Applied 0.8V to VOUT, Vpull=1.0V - - 0.8 V ②
Operating Hold Voltage VHLD
OUT=1mA,
Connected to external components
0.7 - - V ①
I
Input Current at No Load IIN IOUT=0mA (*1) - E1-1(*) E1-2(*) μA ①
Supply Current 1 (*2) IDD1Applied (output voltage×0.95) to VOUT - E2-1(*) E2-2(*) μA ②
Supply Current 2 IDD2Applied (output voltage+0.5) to VOUT - E3-1(*) E3-2(*) μA ②
Lx Switch ON Resistance RSWON Same as IDD1, VLx=0.4V (*3) - E4-1(*) E4-2(*) Ω ②
Lx Leak Current ILxLSame as IDD2, VLx=7V - - 1 μA ③
Duty Ratio DTY Same as IDD1, measure Lx waveform E7-1(*) E7-2(*) E7-3(*) % ②
Duty Ratio 2 DTY2
Maximum Oscillation
Frequency
Maximum Oscillation
Frequency 2
MAXf
MAXf
Lx Limit Voltage (*4) VLxLMT
I
Connect to external components
Same as IDD1 85 100 115 kHz ②
OSC
Same as IDD1 153 180 207 kHz ②
OSC2
Same as I
DD1, VLx when max. oscillation
frequency is more than double
48 56 64 % ①
0.7 - 1.1 V ②
OUT=1mA, measure Lx ON time.
Efficiency (*5) EFFI Connect to external components - E8(*) - % ①
Test condition : Unless otherwise specified, V
NOTE:
*1: TOREX SBD, XBS104S14R-G is used, reverse current IR < 1μA (when reverse voltage V
parts.
*2: Supply Current 1 is the value when the IC is constantly switching. In actual operation, the oscillator periodically switches, resulting in
lower power consumption. Please refer to Input Current (I
input power supply (V
*3: Lx switch ON resistance can be calculated by (V
*4: The Lx limit voltage function becomes stable when V
*5: Please be aware of the absolute maximum ratings of the external components.
(*): Please refer to the charts.
△VOUT
△
V
OUT
・△topr
R
EXTHSame as IDD1, VEXT=VOUT-0.4V (*2) - E5-1(*) E5-2(*) Ω ②
R
EXTLSame as IDD1, VEXT=0.4V (*3) - E6-1(*) E6-2(*) Ω ②
MAXf
OSC
MAXf
OSC2
Connected to external components
Same as IDD1 85 100 115 kHz ⑦
Same as IDD1153 180 207 kHz ⑦
- 40℃≦Topr≦85℃
I
OUT=1mA, Connected to external
components
I
OUT=1mA,
Connected to external components
I
OUT=1mA, measure Lx ON time.
Connect to external components
EXT – Vpull). * Change Vpull so that VEXT will become VOUT-0.4V.
EXT x Rp) / ( Vpull- VEXT). * Change Vpull so that VEXT will become 0.4V.
- ±100 -
- 0.8 0.9 V ⑥
0.7 - - V ⑥
48 56 64 % ⑥
ppm/
℃
Ta = 2 5 ℃
CIRCUIT
⑥
8/36
XC9110/XC9111
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9110Cxx1MR, XC9111Cxx1MR
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITCIRCUIT
Output Voltage VOUTConnect to external components ×0.975 VOUT×1.025 V ①
Output Voltage
Temperature Characteristics
△VOUT
△VOUT・△topr
Connect to external components
- 40℃≦Topr≦85℃
- ±100 -
Maximum Input Voltage VIN 10 - - V ①
Operation Start Voltage VST1
OUT=1mA, connect to external
components
- 0.8 0.9 V ①
I
Oscillation Start Voltage VST2Applied 0.8V to VOUT, Vpull=1.0V - - 0.8 V ②
Operation Hold Voltage VHLD
OUT=1mA, connect to external
components
0.7 - - V ①
I
Input Current IIN IOUT=0mA (*1) - E1-1(*) E1-2(*) μA ①
Supply Current 1 (*2) IDD1Applied (output voltage×0.95) to VOUT - E2-1(*) E2-2(*) μA ②
Supply Current 2 IDD2Applied (output voltage+0.5V) to VOUT - E3-1(*) E3-2(*) μA ②
Lx Switch ON Resistance RSWONSame as IDD1, VLx=0.4V (*3) - E4-1(*) E4-2(*) Ω ②
Lx Leak Current ILxLSame as IDD2, VLx=7V - - 1 μA ③
Duty Ratio DTY Same as IDD1, measure Lx waveform E7-1(*) E7-2(*) E7-3(*) % ②
Duty Ratio 2 DTY2
Maximum
Oscillation Frequency
Maximum
Oscillation Frequency 2
MAXf
MAXf
I
only) Connect to external components
Same as IDD1 85 100 115 kHz ②
OSC
Same as IDD1 (XC9111 only) 153 180 207 kHz ②
OSC2
48 56 64 % ①
OUT=1mA, measure Lx ON time (XC9111
Stand-by Current ISTB Same as IDD1, VCE=0V - - 0.50 μA ④
CE “High” Voltage VCEHSame as IDD1, determine Lx oscillation 0.75 - - V ④
CE “Low” Voltage VCELSame as IDD1, determine Lx shut-down - - 0.20 V ④
CE “High” Current ICEHSame as IDD1, VCE=VOUT×0.95 - - 0.25 μA ⑤
CE “Low” Current ICELSame as IDD1, VCE=0V - - -0.25 μA ⑤
Lx Limit Voltage (*4) VLxLMT
Same as I
DD1, when max. oscillation
frequency is more than double.
0.7 - 1.1 V ②
Efficiency (*5) EFFI Connect to external components - E8(*) - % ①
Test condition : Unless otherwise specified, connect CE to VOUT, VIN=VOUT×0.6, IOUT=<C1(*)>, Vpull=5.0V
NOTE:
*1: TOREX SD, XBS104S14R-G is used, reverse current IR < 1μA (when reverse voltage V
parts.
*2: Supply Current 1 is the value when the IC is constantly switching. In actual operation, the oscillator periodically switches, resulting in
lower power consumption. Please refer to Input Current (I
input power supply (V
*3: Lx switch ON resistance can be calculated by (V
*4: The Lx. limit voltage function becomes stable when V
Lx x Rp) / (Vpull - VLx). * Change Vpull so that VLx will become 0.4V.
IN) under no load condition for the actual current, which is supplied from the
OUT of the XC9110/9111 series is over 2.0V.
R = 10V is applied), in case of using selected
*6: Please be aware of the absolute maximum ratings of the external components.
(*): Please refer to the charts.
ppm/
℃
Ta = 2 5 ℃
①
9/36
XC9110/XC9111Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9110Dxx1MR, XC9111Dxx1MR
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITCIRCUIT
Output Voltage VOUTConnect to external components ×0.975VOUT×1.025 V ⑥
Output Voltage
Temperature Characteristics
Maximum Input Voltage VIN10 - - V -
Operation Start Voltage VST1
Oscillation Start Voltage VST2Applied 0.8V to VOUT - - 0.8 V ⑦
Operation Hold Voltage VHLD
Supply Current 1 (*1) IDD1Applied (output voltage×0.95) to VOUT - E2-1(*) E2-2(*) μA ⑦
Supply Current 2 IDD2Applied (output voltage+0.5V) to VOUT- E3-1(*) E3-2(*) μA ⑦
EXT H ON Resistance REXTHSame as IDD1, VEXT=VOUT-0.4(*2) - E5-1(*) E5-2(*) Ω ②
EXT L ON Resistance REXTLSame as IDD1, VEXT=0.4V(*3) - E6-1(*) E6-2(*) Ω ②
Duty Ratio DTY Same as IDD1, measure Lx waveform E7-1(*)E7-2(*) E7-3(*) % ⑦
Duty Ratio 2 DTY2
Maximum Oscillation
Maximum Oscillation
Standby Current ISTB Same as IDD1, VCE=0V - - 0.50 μA ⑤
CE “High” Voltage VCEHSame as IDD1, determine Lx oscillation 0.75 - - V ⑧
CE “Low” Voltage VCELSame as IDD1, determine Lx shut-down- - 0.20 V ⑧
CE “High” Current ICEHSame as IDD1, VCE=VOUT×0.95 - - 0.25 μA ⑤
CE “Low” Current ICELSame as IDD1, VCE=0V - - -0.25 μA ⑤
The XC9110/9111 series are PFM controlled step-up DC/DC converter (A, C and E types) / controller ICs (B, D and F
types), which contain voltage reference source, PFM comparator, duty selector, PFM controlled OSC, VLx Limiter, driver
transistor and so on. With the XC9110 series, maximum duty ratio is set to 75% (maximum oscillation
frequency=MAXf
switches duty ratio between 56% (MAXf
can support both large and small currents.
<Reference Voltage Source (Vref) >
The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter.
< PFM Comparator >
The PFM comparator compares the feedback voltage divided by the internal split resistors with the internal reference
voltage. When the feedback voltage is higher than the reference voltage, PFM controlled OSC will be stopped. When
the feedback voltage is lower than the reference voltage, the PFM controlled OSC will be operated so that the output
voltage will be stable by sending a signal to the buffer drive circuit and controlling the internal or external driver transistor.
< Duty Selector >
With the XC9111 series, the duty selector automatically switches duty ratio between 56% and 75% when it senses
changes in load and can support both large and small currents.
< PFM Controlled Oscillator >
The PFM controlled OSC determines maximum oscillation frequency. The circuit generates the oscillation frequency of
100kHz at 75% duty and 180kHz at 56%.
< V
Lx Limiter>
The V
Lx circuit of the XC9110/9111 A, C and D types detects in-rush current and overcurrent, which flows from the VOUT
pin to the Lx pin during short-circuit. In overcurrent, the driver transistor will be OFF. When the overcurrent state is
eliminated, the IC resumes its normal operation.
<Chip Enable Function>
The chip enable function of the XC9110/9111 C and D types enables the IC to be in shut down mode when a low level
signal is input to the CE pin. During the shut down mode, the current consumption will be reduced to 0.5μA (MAX.).
<Separated V
With the separated V
: 100kHz) making it suitable for use with large current operations. The XC9111 series automatically
OSC
: 180kHz) and 75% (MAXf
OSC
DD/VOUT>
DD pin, the XC9110/9111 E and F types can be operated in both low and high voltage.
: 100kHz) when it senses changes in load and
OSC
16/36
XC9110/XC9111
Series
■EXTERNAL COMPONENTS
Tr.: *Using a MOSFET
XP151A13A0MR-G (N-ch Power MOSFET, TOREX)
Note : V
so please be careful with the power supply voltage.
If the power supply voltage is over 6V, Please use the
XP151A12A2MR-G with a V
●RB value example (when using NPN Transistor)
GS breakdown voltage of this Transistor is 8V
GS breakdown voltage of 12V.
VOUT (V) IOUT (mA) VIN (V)
RB (Ω)
1.8 10 1.2 4.5 3.3 5 1.2 6.5
1.8 10 1.5 6.0 3.3 5 1.5 6.5
1.8 30 1.2 2.0 3.3 10 1.2 5.0
1.8 30 1.5 2.0 3.3 10 1.5 4.5
1.8 50 1.2 1.2 3.3 30 1.2 3.5
1.8 50 1.5 1.5 3.3 30 1.5 3.5
* Tr.: 2SD1628
SD: XBS104S14R-G (TOREX)
MA2Q735 (MATSUSHITA)
L: 16V, 47μF (Tantalum type, KYOCERA TAJ)
C
CIN: 16V, 47μF (Tantalum type, KYOCERA TAJ)
16V, 220μF (Electrolytic Capacitor)
L: <XC9110/9111A, C and E series (Transistor built-in)> <XC9110/9111B, D and F series(Transistor external)>
100μH (CR54,SUMIDA) 22μH, 47μH (CR54, SUMIDA)
100μH (CDRH6D28,SUMIDA)
■NOTES ON USE
1. Please do not exceed the value of stated absolute maximum ratings.
2. The DC/DC converter / controller IC's performance is greatly influenced by not only the ICs' characteristics, but also by
those of the external components. Care must be taken when selecting the external components.
3. The Lx limit voltage function becomes stable when V
XC9110/9111E series is over 2.0V.
4. Make sure that the PCB GND traces are as thick as possible, as variations in ground potential caused by high ground
currents at the time of switching may result in instability of the IC.
5. Please mount each external component as close to the IC as possible and use thick, short connecting traces to reduce
the circuit impedance.
* Using a NPN Transistor
2SD1628 (SANYO)
R
B: 500Ω (Adjust in accordance with load and Tr’s hFE.)
C
B: 2200pF (Ceramic)
C
B
≦
1 / ( 2TT x RB x FOSC x 0.7 )
VOUT (V) IOUT (mA) VIN (V)
OUT of the XC9110/9111C series is over 2.0V and the VDD of the