XC9110/9111 Series
PFM Controlled Step-Up DC/DC Converter / Controller ICs
July 5, 2004 V3
"
Maximum Duty Cycle
75%
56%/75% Variable
"
Operating (Input) Voltage Range
"
Output Voltage Range
"
Output Voltage Accuracy
"
Low Supply Current
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Built-in transistor type
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External transistor type
XC9110 Series
XC9111 Series
0.9V ~ 10.0V
1.5V ~ 7.0V
±2.5%
2.0µA
(When operating, VOUT=3V)
XC9110 / XC9111 C & E Series
XC9110 / XC9111 D & F Series
"
APPLICATIONS
#
Cellular phones
#
PDAs
#
Cameras, VCRs
#
Portable Communication Equipment
"
GENERAL DESCRIPTION
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 2.5Ω N-channel driver transistor,
the XC9110C/E and XC9111C/E types provide a step-up operation by using
only a coil, a capacitor, and a diode connected externally.
The XC9110/9111D 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 100mV (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
(D and E versions) can be provided for applications which require larger currents.
"
FEATURES
Operating (Input) Voltage Range
Output Voltage Range
Maximum Oscillation Frequency
Built-in Switching N-ch Transistor
External Transistor Types
Ultra Small Package
Lx Limit Voltage
0.9V ~ 10.0V
1.5V ~ 7.0V
(100mV step, accuracy +2.5%)
100kHz (accuracy +15%)
180kHz (for the XC9111 series,
duty ratio : 56% at light loads)
C/E type
ON Resistance 2.5Ω (VDD=3.0V)
D/F type
SOT-25, USP-6C
E type : more than VDD=2.0V
C type : more than VOUT=2.0V
"
TYPICAL APPLICATION CIRCUIT
#
C type circuit
L
5
4
(TOP VIEW)
SOT-25
VIN +
CIN
VOUT
SD
+
CL
(Tantalum)
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TYPICAL PERFORMANCE CHARACTERISTICS
XC9111E331MR
100
L=100
µ
H(CR54),CL47
µ
F(Tantalum)
SD:XB01SB04A2BR
80
Efficiency:EFFI(%)
1
2
3
60
1.5V
40
1.2V
VIN=0.9V
20
2.4V
3.0V
GND
CE
0
0
50
100
150
200
Output Current:IOUT(mA)
250
300
Data Sheet
1
DC000004
XC9110/9111 Series
PFM Controlled Step-Up DC/DC Converter / Controller ICs
"
PIN CONFIGURATION
Lx/EXT
V SS
5
4
VSS
6
NC
5
1
VOUT/VDD
2
NC
3
CE/VOUT
* Please do not connect a heat dissipation pad to the circuitry.
If the pad needs to be connected to other pins, it should be
connected to the pin No. 1.
1
2
3
Lx/EXT
4
CE/V OUT V OUT/V DD NC
SOT-25 (TOP VIEW)
USP-6C (BOTTOM VIEW)
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PIN ASSIGNMENT
PIN NUMBER
SOT-25
USP-6C
D
E
F
C
D
E
-
4
5
-
1
2
3
2
4
-
5
-
1
3
2
4
5
-
-
1
3
-
6
-
4
3
1
2,5
-
6
4
-
3
1
2,5
1
6
-
4
-
3
2,5
PIN NAME
C
VDD
VSS
EXT
Lx
CE
VOUT
NC
-
4
-
5
1
2
3
FUNCTIONS
F
1
6
4
-
-
3
2,5
Internal Power Supply
Ground
External switching transistor drive <Connect to the gate pin of N-ch Power MOSFET>
Switch
Chip Enable <Connect to the VOUT pin when Active and the VSS pin when stand-by>
Output voltage monitor
No connection
"
PRODUCT CLASSIFICATION
#
Selection Guide
START
DUTY RATIO
75%
Tr. Built-in
CE Funciton
XC9110C
VDD/VOUT separated type
XC9110E
External Tr.
CE Funciton
XC9110D
VDD/VOUT separated type
XC9110F
DUTY RATIO
56% / 75% (2 steps)
Tr. Built-in
CE Funciton
XC9111C
VDD/VOUT separated type
XC9111E
External Tr.
CE Funciton
XC9111D
VDD/VOUT separated type
XC9111F
Data Sheet
2
DC000004
XC9110/9111 Series
PFM Controlled Step-Up DC/DC Converter / Controller ICs
"
PRODUCT CLASSIFICATION (Continued)
#
Ordering Information
XC9110
123456
/ XC9111
123456
XC9110 series < PFM control, 75% duty >
XC9111 series < PFM control, 56% / 75% duty variable >
DESIGNATOR
DESCRIPTION
SYMBOL
DESCRIPTION
CE pin (5 pin)
CE pin (5 pin)
VDD / VOUT separated type (5 pin)
VDD / VOUT separated type (5 pin)
ex. 3.5V output
!
2
= 3,
3
= 5
100kHz
SOT-25
USP-6C
Embossed tape, standard feed
Embossed tape, reverse feed
Built-in Transistor
External Transistor
Built-in Transistor
External Transistor
1
23
4
5
6
CE Function
Output Voltage
Maximum Oscillation Frequency
Package
Device Orientation
C
D
E
F
Integer
1
M
D
R
L
"
MARKING RULE
#
SOT-25
Represents product series
Mark
1
MARK
FUNCTION
L
M
N
P
R
T
U
V
CE
CE
VDD/VOUT
VDD/VOUT
CE
CE
VDD/VOUT
VDD/VOUT
Tr. Built-in
External Tr.
Tr. Built-in
External Tr.
Tr. Built-in
External Tr.
Tr. Built-in
External Tr.
PRODUCT SERIES
XC9110Cxxxxx
XC9110Dxxxxx
XC9110Exxxxx
XC9110Fxxxxx
XC9111Cxxxxx
XC9111Dxxxxx
XC9111Exxxxx
XC9111Fxxxxx
5
4
1234
1
2
3
SOT-25 (TOP VIEW)
Represents the integer of output voltage and oscillation frequency
Mark
2
SYMBOL
OUTPUT
VOLTAGE
FOSC=100kHz
1.x
2.x
3.x
4.x
5.x
6.x
7.x
1
2
3
4
5
6
7
Represents the decimal point of output voltage and oscillation frequency
Mark
3
OUTPUT
SYMBOL
VOLTAGE
FOSC=100kHz
x.0
x.1
x.2
x.3
x.4
x.5
x.6
x.7
x.8
x.9
Mark
4
0
1
2
3
4
5
6
7
8
9
Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
Data Sheet
3
DC000004
XC9110/9111 Series
PFM Controlled Step-Up DC/DC Converter / Controller ICs
"
MARKING RULE (Continued)
#
USP-6C
Represents product series
Mark
1
MARKING
PRODUCT SERIES
M
N
XC9110xxx1Dx
XC9111xxx1Dxx
1
2
3
6
5
4
USP-6C (TOP VIEW)
Represents series type
Mark
2
MARKING
FUNCTION
C
D
E
F
CE
CE
VDD/VOUT
VDD/VOUT
Tr. Built-in
External Tr.
Tr. Built-in
External Tr.
PRODUCT SERIES
XC911xCxx1Dx
XC911xDxx1Dx
XC911xExx1Dx
XC911xFxx1Dx
1 23
456
Represents the integer of output voltage
Mark
3
MARKING
OUTPUT VOLTAGE
1
2
3
4
5
6
7
1.x
2.x
3.x
4.x
5.x
6.x
7.x
Represents the decimal point of output voltage
Mark
4
MARKING
OUTPUT VOLTAGE
0
1
2
3
4
5
6
7
8
9
Mark
5
MARKING
1
Mark
6
x.0
x.1
x.2
x.3
x.4
x.5
x.6
x.7
x.8
x.9
Represents oscillation frequency
OSCILLATION FREQUENCY
x.0
Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
* No character inversion is used.
PRODUCT SERIES
XC911xxxx1Dx
Data Sheet
4
DC000004
XC9110/9111 Series
PFM Controlled Step-Up DC/DC Converter / Controller ICs
"
BLOCK DIAGRAM
#
XC9110 / 9111 C and D series
Lx
Buffer
VSS
VLx limiter
Only C type
VDD
Vref
VOUT
PFM Control OSC
100kHz (180kHz)
DUTY Selector
Only XC9111
+
-
PFM Comparator
EXT
CE
Chip Enable
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 (FOSC) is 100kHz. The duty ratio of the XC9111
series automatically varies between 56% (oscillation frequency 180kHz) and 75% (oscillation frequency (FOSC) 100kHz).
The VLx limit function only applies to the XC9110/9111 C versions.
* The duty ratio depends on power supply.
output voltage you use.
Please refer to the electrical characteristics on page 6 on duty against
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XC9110 / 9111 E and F series
VDD
Lx
Buffer
PFM Control OSC
100kHz (180kHz)
VSS
VLx limiter
Only E type
VDD
Vref
VOUT
DUTY Selector
Only XC9111
+
-
PFM Comparator
EXT
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 VDD pin. The XC9110 series' duty ratio is 75% and
oscillation frequency (FOSC) is 100kHz. The duty ratio of the XC9111 series automatically varies between
56% (oscillation frequency 180kHz) and 75% (oscillation frequency (FOSC) 100kHz). The VLx limit
function only applies to the XC9110/9111 C versions.
* The duty ratio depends on power supply.
output voltage you use.
Please refer to the electrical characteristics on page 7 on duty against
Data Sheet
5
DC000004
