XC9504
Series
2 ch. Step-Up / Inverting DC/DC Controller ICs
ETR0704_001
☆Green
Operation Compatible
■GENERAL
DESCRIPTION
The XC9504 series are PWM control, PWM/PFM switching, 2 channel (step-up and inverting) DC/DC controller ICs.
With 0.9V of standard voltage supply internal, and using externally connected components, the output 1 voltage (step-up
DC/DC controller) can be set freely within a range of 1.5V ~ 30V. Since output 2 (inverting DC/DC controller) has a built-in
0.9V reference voltage (accuracy ±2%), a negative voltage can be set with the external components.
With a 180kHz frequency, the size of the external components can be reduced. Oscillation frequencies of 300kHz are also
available as custom designed products.
The control of the XC9504 series can be switched between PWM control and PWM/PFM automatic switching control using
external signals. Control switches from PWM to PFM during light loads when automatic switching is selected and the series
is highly efficient from light loads through to large output currents. Noise is easily reduced with PWM control since the
frequency is fixed.
The series gives freedom of control selection so that control suited to the application can be selected.
Soft-start time is internally set to 10ms (output 1) which offers protection against rush currents and voltage overshoot when
the power is switched on.
■APPLICATIONS
●Power
supplies for LCD
●PDAs
●Palm
top computers
●Portable
audio systems
●Various
multi-function power supplies
■FEATURES
2ch. DC/DC Controller (Step-Up + Inverting)
<Output 1: Step-Up DC/DC Controller>
Output Voltage Range : 1.5V ~ 30V (set by FB1 pin)
Output Current
: More than 20mA
(V
IN
=3.3V, V
OUT
=15V)
Soft-Start Internally Set-Up
<Output 2: Inverting DC/DC Controller >
Output Voltage Range : -30V ~ 0V (set by FB2 pin)
Output Current
:
≧-20mA
(V
IN
=3.3V, V
OUT
=-7.0V)
<Common>
Supply Voltage Range : 2.0V ~ 10.0V
Input Voltage Range : 0.9V ~ 10.0V
Oscillation Frequency : 180kHz (±15%)
*300kHz, 500kHz custom
Maximum Duty Cycle : 80% (TYP.)
Control Method
: PWM or PWM/PFM Selectable
Stand-by Function
: 3.0μF(MAX.)
Packages
: MSOP-10, USP-10
■TYPICAL
APPLICATION CIRCUIT
＜XC9504B092A
Input: 3.3V, Output
①:
15V, Output
②:
-7V＞
■TYPICAL
PERFORMANCE
CHARACTERISTICS
●Output
Voltage vs. Output Current
1/53
XC9504
Series
■PIN
CONFIGURATION
USP-10
(BOTTOM VIEW)
■PIN
ASSIGNMENT
PIN NUMBER PIN NAME
1
2
3
4
5
EXT 1
V
DD
FB1
PWM1
EN1
FUNCTION
Channel 1: External Transistor Drive Pin
<Connected to N-ch Power MOSFET Gate>
Supply Voltage
Channel 1: Output Voltage Monitor Feedback Pin <Threshold value: 0.9V. Output voltage
can be set freely by connecting split resistor between V
OUT1
and GND.>
Channel 1: PWM/PFM Switching Pin <Control Output 1. PMW control when connected
to V
DD
, PWM/PFM auto switching when connected to GND.>
Channel 1: Enable Pin <Connected to GND when Output 1 is in stand-by mode.
Connected to V
DD
when Output 1 is active. EXT1 is low when in stand-by mode.>
Channel 2: Enable Pin <Connected to GND when Output 2 is in stand-by mode.
Connected to V
DD
when Output 2 is active. EXT1 is high when in stand-by mode.>
Channel 2: PWM/PFM Switching Pin <Control Output 2．PMW control when connected
to V
DD
, PWM/PFM auto switching when connected to GND.>
Channel 2: Output Voltage Monitor Feedback Pin <Threshold value: 0.9V. Output voltage
can be set freely by connecting split resistor between V
OUT2
and GND.>
Ground
Channel 2: External Transistor Drive Pin <Connected to P-ch Power MOSFET Gate>
←
13mm
→
6
7
8
9
10
EN2
PWM2
FB2
GND
EXT2/
■PRODUCT
CLASSIFICATION
●Ordering
Information
XC9504
①②③④⑤⑥
DESIGNATOR
①
②
④
③
DESCRIPTION
Type of DC/DC Controller
Output Voltage
Oscillation Frequency
SYMBOL
B
09
2
3
5
A
D
R
L
DESCRIPTION
: Standard type (10 pin)
: FB products
②=0, ③=9
fixed
: 180kHz
: 300kHz (custom)
: 500kHz (custom)
: MSOP-10
: USP-10
: Embossed tape, standard feed
: Embossed tape, reverse feed
⑤
⑥
Packages
Device Orientation
2/53
XC9504
Series
■BLOCK
DIAGRAM
■ABSOLUTE
MAXIMUM RATINGS
Ta=25℃
PARAMETER
V
DD
Pin Voltage
FB1, 2 Pin Voltage
EN1, 2 Pin Voltage
PWM1, 2 Pin Voltage
EXT1, 2 Pin Voltage
EXT1, 2 Pin Current
MSOP-10
Power Dissipation
USP-10
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
DD
V
FB
V
EN
V
PWM
V
EXT
I
EXT
Pd
Topr
Tstg
RATINGS
- 0.3 ~ 12.0
- 0.3 ~ 12.0
- 0.3 ~ 12.0
- 0.3 ~ 12.0
- 0.3 ~ V
DD
+ 0.3
±100
150
150
- 40 ~ + 85
- 55 ~ + 125
UNITS
V
V
V
V
V
mA
mW
℃
℃
3/53
XC9504
Series
■ELECTRICAL
CHARACTERISTICS
XC9504B092A Common Characteristics
PARAMETER
Supply Voltage
(*1)
Output Voltage Range
(*3)
SYMBOL
V
DD
V
DD
≧2.0V
V
OUTSET
V
IN
≧0.9V
Supply Current 1
Supply Current 1-1
Supply Current 1-2
Supply Current 2
Stand-by Current
Oscillation Frequency
EN1, 2 "High" Voltage
EN1, 2 "Low" Voltage
EN1, 2 "High" Current
EN1, 2 "Low" Current
PWM1, 2 "High" Current
PWM1, 2 "Low" Current
FB1, 2 "High" Current
FB1, 2 "Low" Current
I
DD1
I
DD1-1
I
DD1-2
I
DD2
I
STB
F
OSC
V
ENH
V
ENL
I
ENH
I
ENL
I
PWMH
I
PWML
I
FBH
V
FBL
I
OUT
=1mA
(*2)
(FOSC = 180kHz)
CONDITIONS
V
OUT1
V
OUT2
V
OUT1
V
OUT2
MIN.
2.0
0.9
-
2.0
-
-
-
-
-
-
153
0.65
-
-
-
-
-
-
-
TYP.
-
-
-
-
-
90
60
80
70
1.0
180
-
-
-
-
-
-
-
-
MAX. UNITS
10.0
-
0.0
10.0
0.0
190
120
150
132
3.0
207
-
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
V
V
V
V
V
μA
μA
μA
μA
μA
kHz
V
V
μA
μA
μA
μA
μA
μA
Ta=25℃
CIRCUIT
-
①
②
③
③
③
③
③
③
③
③
③
③
③
③
③
③
I
OUT
=1mA
FB=0V, FB2=0.1
EN1=3.0V, EN2=0V, FB1=0V
EN2=3.0V, EN1=0V, FB2=1.2V
FB1=0V, FB2=0V
FB1=1.2V, FB2=1.2V
FB1=1.2V, FB2=0V
Same as I
DD1
, EN1=EN2=0V
Same as I
DD1
FB1=3.0V, FB2=0V
FB1=3.0V, FB2=0V
FB1=3.0V, FB2=0V
EN1, 2=0V, FB1=3.0V, FB2=0V
FB1=3.0V, FB2=0V, PWM1, 2=3.0V
FB1=3.0V, FB2=0V, PWM1, 2=0V
FB1=3.0V, FB2=0.8V
FB1=1.0V, FB2=0V
Unless otherwise stated, V
DD
=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Output 1 Characteristics
PARAMETER
FB1 Voltage
Operating Start Voltage 1
(*2)
Step-Up Controller
SYMBOL
V
FB1
V
ST1-1
V
ST2-1
MINDTY1
MAXDTY1
PFMDTY1
EFFI1
TSS1
R
EXTBH1
R
EXTBL1
V
PWMH1
V
PWML1
CONDITIONS
V
DD
=3.0V, V
IN
=1.5V, I
OUT
=10mA
Using Tr: 2SD1628,
I
OUT
=1.0mA, R
FB11
=200kΩ, R
FB12
=75kΩ
V
DD
≠V
OUT1
: I
OUT1
=10mA
FB1=0V
Same as I
DD1
Same as I
DD2
No Load, V
PWM1
=0V
I
OUT1
= 130mA, N-ch MOSFET: XP161A1355P
V
OUT1
×0.95V,
EN1=0V→0.65V
FB1=0V, EXT1=V
DD
-0.4V
EN1=FB1=1.2V, EXT1=0.4V
No Load
No Load
MIN.
0.882
-
-
-
75
-
22
-
5.0
-
-
0.65
-
(FOSC = 180kHz)
TYP.
0.900
-
-
-
80
-
30
85
10.0
28
22
-
-
MAX. UNITS
0.918
0.9
2.0
0.8
87
0
38
-
20.0
47
30
-
0.20
V
V
V
V
%
%
%
%
ms
Ω
Ω
V
V
Ta=25℃
CIRCUIT
④
②
①
③
③
③
⑤
⑤
⑤
⑥
⑥
⑤
⑤
Oscillation Start Voltage 1
Maximum Duty Ratio 1
Minimum Duty Ratio 1
PFM Duty Ratio 1
Efficiency 1
Soft-Start Time 1
EXT1 "High" ON Resistance
EXT1 "Low" ON Resistance
PWM1 "High" Voltage
PWM1 "Low" Voltage
Unless otherwise stated, V
DD
=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, V
IN
=1.8V
Output 2 Characteristics
PARAMETER
FB2 Voltage
Operation Start Voltage 2
Oscillating Start Voltage 2
Maximum Duty Ratio 2
Minimum Duty Ratio 2
PFM Duty Ratio 2
Efficiency 2
EXT2 "High" ON Resistance
EXT2 "Low" ON Resistance
PWM2 "High" Voltage
PWM2 "Low" Voltage
Inverting DC/DC Controller
SYMBOL
V
FB2
V
ST1-2
V
ST2-2
MAXDTY2
MINDTY2
PFMDTY2
EFFI2
R
EXTBH2
R
EXTBL2
V
PWMH2
V
PWML2
CONDITIONS
V
DD
=3.0V
I
OUT
=1.0mA, R
FB11
=200kΩ, R
FB12
=75kΩ
R
FB21
=17.5kΩ, R
FB22
=10kΩ,
EN1=P
WM1
=3.0V
FB2=1.2V
Same as I
DD1
Same as I
DD2
No Load, V
PWM2
=0V
I
OUT2
=-150mA, P-ch MOSFET: XP162A12A6P
EN2=FB2= 0V, EXT2=V
DD
-0.4V
FB2=3.0V, EXT2=0.4V
No Load
No Load
MIN.
0.882
-
-
75
-
22
-
-
-
0.65
-
(FOSC = 180kHz)
TYP.
0.900
-
-
80
-
30
76
28
22
-
-
MAX. UNITS
0.918
2.0
2.0
87
0
38
-
47
30
-
0.20
V
V
V
%
%
%
%
Ω
Ω
V
V
Ta=25℃
CIRCUIT
③
①②
③
③
③
⑦
⑦
⑥
⑥
⑦
⑦
Unless otherwise stated, V
DD
=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, V
IN
=3.0V
4/53
XC9504
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
XC9504B093A
Common Characteristics
SYMBOL
V
DD
(*3)
(FOSC = 300kHz)
CONDITIONS
MIN.
2.0
0.9
-
2.0
-
-
-
-
-
-
255
0.65
-
-
-
-
-
-
-
TYP.
-
-
-
-
-
110
80
90
80
1.0
300
-
-
-
-
-
-
-
-
MAX. UNITS
10.0
V
-
V
0.0
10.0
V
0.0
250
μA
150
200
160
3.0
345
-
0.20
0.50
-0.50
0.50
-0.50
0.50
-0.50
μA
μA
μA
μA
kHz
V
V
μA
μA
μA
μA
μA
μA
Ta=25℃
CIRCUIT
-
①
②
③
③
③
③
③
③
③
③
③
③
③
③
③
③
PARAMETER
(*1)
Supply Voltage
Output Voltage Range
V
OUTSET
Supply Current 1
Supply Current 1-1
Supply Current 1-2
Supply Current 2
Stand-by Current
Oscillation Frequency
EN1, 2 "High" Voltage
EN1, 2 "Low" Voltage
EN1, 2 "High" Current
EN1, 2 "Low" Current
PWM1, 2 "High" Current
PWM1, 2 "Low" Current
FB1, 2 "High" Current
FB1, 2 "Low" Current
I
DD1
I
DD1-1
I
DD1-2
I
DD2
I
STB
FOSC
V
ENH
V
ENL
I
ENH
I
ENL
I
PWMH
I
PWML
I
FBH
V
FBL
V
DD
≧2.0V,
I
OUT
=1mA
V
DD
≠V
OUT
(*2)
V
IN
≧0.9V,
I
OUT
=1mA
V
DD
=V
OUT
FB=0V, FB2=1.2V
EN1=3.0V, EN2=0, FB1=0V
EN2=3.0V, EN1=0V, FB2=1.2V
FB1=0V, FB2=0V
FB1=1.2V, FB2=1.2V
FB1=1.2V, FB2=0V
Same as I
DD1
, EN1=EN2=0V
Same as I
DD1
FB1=0V, FB2=3.0V
FB1=0V, FB2=3.0V
FB1=3.0V, FB2=0V
EN1, 2=0V, FB1=3.0V, FB2=0V
FB1=3.0V, FB2=0V, PWM1, 2=3.0V
FB1=3.0V, FB2=0V, PWM1, 2=0V
FB1=3.0V, FB2=0.8V
FB1=1.0V, FB2=0V
V
OUT1
V
OUT2
V
OUT1
V
OUT2
Unless otherwise stated, V
DD
=3.0V, PWM1, 2=3.0V, EN1, 2 = 3.0V
Output 1 Characteristics
PARAMETER
FB 1 Voltage
Operating Start Voltage 1
(*2)
Step-Up Controller
SYMBOL
V
FB1
V
ST1-1
CONDITIONS
V
DD
=3.0V, V
IN
=1.5V, I
OUT1
=10mA
Using Tr: 2SD1628,
I
OUT
=1.0mA, R
FB11
=200kΩ, R
FB12
=75kΩ
V
DD
≠V
OUT1
: I
OUT1
=10mA
FB1=0V
Same as I
DD1
Same as I
DD2
No Load, V
PWM1
=0V
I
OUT1
= 130mA, N-ch MOSFET: XP161A1355P
V
OUT1
×0.95V,
EN1=0V→0.65V
FB1=0V, EXT1=V
DD
-0.4V
EN1=FB1=1.2V, EXT1=0.4V
No Load
No Load
MIN.
0.882
-
-
-
75
-
22
-
5.0
-
-
0.65
-
(FOSC = 300kHz)
TYP.
0.900
-
-
-
80
-
30
85
10.0
28
22
-
-
MAX. UNITS
0.918
V
0.9
2.0
0.8
87
0
38
-
20.0
47
30
-
0.20
V
V
V
%
%
%
%
ms
Ω
Ω
V
V
Ta=25℃
CIRCUIT
④
②
①
③
③
③
⑤
⑤
⑤
⑥
⑥
⑤
⑤
Oscillation Start Voltage 1
V
ST2-1
Maximum Duty Ratio 1
MINDTY1
Minimum Duty Ratio 1
MAXDTY2
PFM Duty Ratio 1
PFMDTY1
Efficiency 1
EFFI1
Soft-Start Time 1
T
SS1
EXT1 "High" ON Resistance R
EXTBH1
EXT1 "Low" ON Resistance R
EXTBL1
PWM1 "High" Voltage
V
PWMH1
PWM1 "Low" Voltage
V
PWML1
Unless otherwise stated, V
DD
=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, V
IN
=1.8V
Output 2 Characteristics
PARAMETER
FB 2 Voltage
Operating Start Voltage 2
Inverting DC/DC Controller
SYMBOL
V
FB2
V
ST1-2
CONDITIONS
V
DD
=3.0V
I
OUT2
=1.0mA, R
FB11
=200kΩ, R
FB12
=75kΩ
R
FB21
=17.5kΩ,R
FB22
=10k, EN1=PWM1=3.0V
MIN.
0.882
-
(FOSC = 300kHz)
TYP.
0.900
-
MAX. UNITS
0.918
V
2.0
2.0
87
0
38
-
47
30
-
0.20
V
V
%
%
%
%
Ω
Ω
V
V
Ta=25℃
CIRCUIT
③
①②
③
③
③
⑦
⑦
⑥
⑥
⑦
⑦
Oscillation Start Voltage 2
V
ST2-2
FB2=1.2V
-
-
Maximum Duty Ratio 2
MAXDTY2 Same as I
DD1
75
80
Minimum Duty Ratio 2
MINDTY3 Same as I
DD2
-
-
PFM Duty Ratio 2
PFMDTY2 No Load, V
PWM2
=0V
22
30
Efficiency 2 (*4)
EFFI2
I
OUT2
= -150mA, P-ch MOSFET: XP162A12A6P
-
75
EXT2 "High" ON Resistance R
EXTBH2
EN2=FB2= 0V, EXT2=V
DD
-0.4V
-
28
EXT2 "Low" ON Resistance R
EXTBL2
FB2=3.0V, EXT2=0.4V
-
22
PWM2 "High" Voltage
V
PWMH2
No Load
0.65
-
PWM2 "Low" Voltage
V
PWML2
No Load
-
-
Unless otherwise stated, V
DD
=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, V
IN
=3.0V
5/53
