XC9303 Series
ETR0602_004
High Efficiency, Synchronous Step-Up & Down DC / DC Controller ICs
☆Green Operation Compatible
■GENERAL DESCRIPTION
The XC9303 series is highly efficient, synchronous PWM, PWM/PFM switchable step-up & down DC/DC controller ICs.
A versatile, large output current and high efficiency, step-up/down DC/DC controller can be realized using only basic
external components - transistors, coil, diode, capacitors, and resistors for detecting voltages. High efficiency is obtained
through the use of a synchronous rectification topology. The operation of the XC9303 series can be switched between PWM
and PWM/PFM (auto switching) externally using the PWM pin. In PWM/PFM mode, the XC9303 automatically switches
from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of output loads conditions.
Output noise can be easily reduced with PWM control since the frequency is fixed. Synchronous rectification control can be
switched to non-synchronous by using external signals (MODE pin). High efficiency can be regulated at heavy loads when
synchronous operation. The XC9303 has a 0.9V (±2.0%) internal voltage supply and using externally connected
components, output voltage can be set freely between 2.0V to 6.0V. With an internal 300kHz switching frequency smaller
external components can be used. Soft-start time is internally set to 10ms and offers protection against in-rush currents
when the power is switched on and prevents voltage overshoot.
■FEATURES
■APPLICATIONS
●PDAs
Input Voltage Range
: 2.0V ~ 10V
Output Voltage Range
: 2.0V ~ 6.0V
(set freely with VFB=0.9V)
Oscillation Frequency
: 300kHz (±15%)
Output Current
: 800mA(VIN = 4.2V, VOUT=3.3V)
Stand-By Function
: 3.0μA (MAX.)
Maximum Duty Cycle
: 78% (TYP.)
High Efficiency
: 84% (TYP.)
Soft-Start Time
: 10ms (internally fixed)
●Palmtop computers
●Portable audios
●Various power supplies
Package
: MSOP-8A
Environmentally Friendly: EU RoHS Compliant, Pb Free
■TYPICAL APPLICATION CIRCUIT
●Efficiency vs. Output Current
<XC9303B093K OUTPUT= 3.3V>
L:22uH
CDRH127/LD
Tr1:Pch MOSFET
:CPH6315
■TYPICAL PERFORMANCE
CHARACTERISTICS
XC9303B093K(300kHz, VOUT =3.3V)
SD:CM S02
100
V OUT : 3 . 3 V
CE
V IN :2.0V~10V
EXT 2
V DD
GND
PWM
FB
CE
NC
Tr3:Nch MOSFET
:CPH3409
CFB
:62pF
RFB
:200 kΩ
RFB
:75 kΩ
CL :
47uF X2
Efficiency EFFI (%)
80
CIN :47uF
PWM
PW M/PFM Switching Control
90
Tr2:Nch M OSFET
:CPH3409
EXT 1
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
70
60
50
VIN=2.7V
40
4.2V
30
PW M Control
20
10
0
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
1/20
XC9303 Series
■PIN CONFIGURATION
1 EXT1
EXT2 8
2 VDD
GND 7
3 PWM
FB 6
4 CE
NC 5
MSOP-8A
(TOP VIEW)
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
1
EXT 1 /
2
VDD
FUNCTIONS
External Transistor Drive Pin <Connected to High Side of P-ch Power MOSFET Gate>
Supply Voltage
3
PWM
4
CE
PWM/PFM Switching Pin <PWM control when connected to VDD, PWM / PFM auto
switching when connected to Ground. >
Chip Enable Pin <Connected to Ground when output is stand-by mode. Connected to
VDD when output is active. EXT/1 is high and EXT2/ is high when in stand-by mode. >
5
NC
No Connection
6
FB
Output Voltage Monitor Feedback Pin <Threshold value: 0.9V. Output voltage can be set
freely by connecting split resistors between VOUT and Ground. >
7
GND
Ground
8
EXT2
External Transistor Drive Pin <Connected to Low side of N-ch Power MOSFET Gate>
■PRODUCT CLASSIFICATION
●Ordering Information
XC9303①②③④⑤⑥-⑦(*1)
(*1)
DESIGNATOR
ITEM
SYMBOL
DESCRIPTION
①
Type of DC/DC Controller
B
Standard type
②③
Output Voltage
09
FB Voltage: 0.9V
④
Oscillation Frequency
3
300kHz
⑤⑥-⑦(*１)
Packages (Order Unit)
KR
KR-G
MSOP-8A (1,000/Reel)
MSOP-8A (1,000/Reel)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
2/20
XC9303
Series
■ BLOCK DIAGRAM
Synchronou s
Blank Logic
EXT1/
PWM
Com pa rator
Error Am p
FB
EXT2
+
+
-
PWM /PFM
Con troll er
-
PWM
VIN
CE
Vref=0.9V
with Soft-Start,
CE
CE to
interna l ci rcui t
R am p Wave
Gene rator,
OSC
GND
■ ABSOLUTE MAXIMUM RATINGS
Ta = 25℃
PARAMETER
SYMBOL
RATINGS
UNITS
VDD Pin Voltage
VDD
- 0.3 ~ 12.0
V
FB Pin Voltage
VFB
- 0.3 ~ 12.0
V
CE Pin Voltage
VEN
- 0.3 ~ 12.0
V
PWM Pin Voltage
VPWM
- 0.3 ~ 12.0
V
EXT1, 2 Pin Voltage
VEXT
- 0.3 ~ VDD + 0.3
V
EXT1, 2 Pin Current
IEXT
±100
mA
Power Dissipation
Pd
150
mW
Operating Temperature Range
Topr
- 40 ~ + 85
℃
Storage Temperature Range
Tstg
- 55 ~ +125
℃
3/20
XC9303 Series
■ ELECTRICAL CHARACTERISTICS
(FOSC = 300kHz)
XC9303B093
PARAMETER
SYMBOL
Supply Voltage
VDD
Maximum Input Voltage
VIN
Output Voltage Range (*1)
VOUTSET
Supply Current 1
IDD1
Supply Current 2
CONDITIONS
Ta=25℃
MIN.
TYP.
MAX.
UNITS
CIRCUIT
2.0
-
10.0
V
①
10.0
-
-
V
①
2.0
-
6.0
V
①
FB = 0V
-
90
170
μA
②
IDD2
FB = 1.0V
-
55
110
μA
②
Stand-by Current
ISTB
Same as IDD1, CE = 0V
-
-
3.0
μA
②
Oscillation Frequency
FOSC
255
300
345
kHz
②
FB Voltage
VFB
0.882
0.900
0.918
V
③
Minimum Operation Voltage
VINmin
-
-
2.0
V
①
Maximum Duty Ratio
MAXDTY
Same as IDD1
72
78
88
%
②
Minimum Duty Ratio
MINDTY
Same as IDD2
-
-
0
%
②
PFM Duty Ratio
PFMDTY
No Load, VPWM=0V
22
30
38
%
④
Efficiency (*2)
EFFI
IOUT1=100mA (*3)
-
84
-
%
④
Soft-Start Time
TSS
VOUT×0.95V, CE=0V→0.65V
5.0
10.0
20.0
ms
④
EXT1 "High" ON Resistance
REXTBH1
CE = 0, EXT1= VDD - 0.4V
-
26
37
Ω
⑤
EXT1 "Low" ON Resistance
REXTBL1
FB = 0V, EXT1 = 0.4V
-
19
30
Ω
⑤
EXT2 "High" ON Resistance
REXTBH2
EXT2 = VDD - 0.4V
-
23
31
Ω
⑤
EXT2 "Low" ON Resistance
REXTBL2
CE = 0V, EXT2 = VDD - 0.4V
-
19
30
Ω
⑤
PWM "High" Voltage
VPWMH
No Load
0.65
-
-
V
④
PWM "Low" Voltage
VPWML
No Load
-
-
0.20
V
④
CE "High" Voltage
VCEH
FB = 0V
0.65
-
-
V
②
CE "Low" Voltage
VCEL
FB = 0V
-
-
0.2
V
②
CE "High" Current
ICEH
-
-
0.5
μA
②
CE "Low" Current
ICEL
-
-
- 0.5
μA
②
PWM "High" Current
IPWMH
-
-
0.5
μA
②
PWM "Low" Current
IPWML
-
-
- 0.5
μA
②
FB "High" Current
IFBH
-
-
0.50
μA
②
FB "Low" Current
IFBL
-
-
- 0.50
μA
②
VIN≧2.0V, IOUT=1mA
VOUT
Same as IDD1
VIN=3.0V, IOUT=10mA
CE = 0V
PWM=0V
FB = 1.0V
NOTE *1: Please be careful not to exceed the breakdown voltage level of the external components.
*2: EFFI={ [ (output voltage) x (output current) ] / [ (input voltage) x (input current) ] } x 100
*3: Tr1:
CPH6315
(SANYO)
Tr2:
CPH3409
(SANYO)
Tr3:
SD:
L:
CL:
CIN:
RFB1:
RFB2:
CFB:
4/20
CPH3409
CMS02
22μH
16V, 47μF x 2
16V, 47μF
200kΩ
75kΩ
62pF
(SANYO)
(TOSHIBA)
(CDRH127/LD, SUMIDA)
(Tantalum MCE Series, NICHICEMI)
(Tantalum MCE Series, NICHICEMI)
XC9303
Series
■ OPERATIONAL EXPLANATION
The XC9303 series are synchronous step-up & down DC/DC converter controller ICs with built-in high speed, low ON
resistance drivers.
<Error Amp.>
The error amplifier is designed to monitor the output voltage and it compares the feedback voltage (FB) with the reference
voltage. In response to feedback of a voltage lower than the reference voltage, the output voltage of the error amp.
decreases.
<OSC Generator>
This circuit generates the oscillation frequency, which in turn generates the source clock.
<Ramp Wave Generator>
The ramp wave generator generates a saw-tooth waveform based on outputs from the phase shift generator.
<PWM Comparator>
The PWM Comparator compares outputs from the error amp. and saw-tooth waveform. When the voltage from the error
amp's output is low, the external switch will be set to ON.
<PWM/PFM Controller>
This circuit generates PFM pulses. Control can be switched between PWM control and PWM/PFM automatic switching
control using external signals. The PWM/PFM automatic switching mode is selected when the voltage of the PWM pin is less
than 0.2V, and the control switches between PWM and PFM automatically depending on the load. As the PFM circuit
generates pulses based on outputs from the PWM comparator, shifting between modes occurs smoothly. PWM control mode
is selected when the voltage of the PWM pin is more than 0.65V. Noise is easily reduced with PWM control since the switching
frequency is fixed. Control suited to the application can easily be selected which is useful in audio applications, for example,
where traditionally, efficiencies have been sacrificed during stand-by as a result of using PWM control (due to the noise
problems associated with the PFM mode in stand-by).
<Synchronous, blank logic>
The synchronous, blank logic circuit is to prevent penetration of the transistor connected to EXT1 and EXT2.
<Vref with Soft Start>
The reference voltage, Vref (FB pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please
refer to next page). To protect against inrush current, when the power is switched on, and also to protect against voltage
overshoot, soft-start time is set internally to 10ms. It should be noted, however, that this circuit does not protect the load
capacitor (CL) from inrush current. With the Vref voltage limited and depending upon the input to the error amps, the operation
maintains a balance between the two inputs of the error amps and controls the EXT pin's ON time so that it doesn't increase
more than is necessary.
<Chip Enable Function>
This function controls the operation and shutdown of the IC. When the voltage of the CE pin is 0.2V or less, the mode will be
chip disable, the channel's operations will stop. The EXT1 pin will be kept at a high level (the external P-ch MOSFET will be
OFF) and the EXT2 pin will be kept at a high level (the external N-ch MOSFET will be ON). When CE pin is in a state of chip
disable, current consumption will be no more than 3.0μA. When the CE pin's voltage is 0.65V or more, the mode will be chip
enable and operations will recommence. With soft-start, 95% of the set output voltage will be reached within 10ms (TYP.)
from the moment of chip enable.
<Output Voltage Setting>
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on
the values of RFB11 (RFB21) and RFB12 (RFB22). The sum of RFB11 (RFB21) and RFB12 (RFB22) should normally be 1 MΩor less.
VOUT = 0.9×( RFB11 + RFB12 ) / RFB12
The value of CFB1(CFB2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2×π×CFB1×RFB11) which is equal
to 12kHz. Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and value of load
capacity (CL).
5/20
XC9303 Series
■ OPERATIONAL EXPLANATION (Continued)
<Output Voltage Setting (Continued)>
[Example of Calculation: When RFB11 = 200kΩand RFB12 = 75kΩ, VOUT1 = 0.9×( 200k + 75k ) / 75k = 3.3V.]
[Typical Example]
VOUT
(V)
2.0
2.2
2.5
2.7
3.0
[External Components]
RFB11
(kΩ)
330
390
390
360
560
RFB12
(kΩ)
270
270
220
180
240
CFB1
(pF)
39
33
33
33
24
VOUT
(V)
3.3
5.0
RFB11
(kΩ)
200
82
RFB12
(kΩ)
75
18
CFB1
(pF)
62
160
Tr1:
Tr2:
Tr3:
Note:
CPH6315 (P-ch MOSFET: SANYO), IRLMS6702 (P-ch MOSFET: IR)
CPH3409 (N-ch MOSFET: SANYO), IRLMS1902 (N-ch MOSFET: IR)
CPH3409 (N-ch MOSFET: SANYO), IRLMS1902 (N-ch MOSFET: IR)
Vgs Breakdown Voltage of CHPH6315 and CPH3409 is 10V so please be
careful with the power supply voltage.
For the power supply voltage more than 8V, CPH3308 (P-ch MOSFET: SANYO)
or CPH3408 (N-ch MOSFET: SANYO) which breakdown voltage is 20V are
recommended.
L :
SD :
CL :
CIN :
22μH
CMS02
16V, 47μF x 2
16V, 47μF
(CDRH127/LD, SUMIDA)
(Schottky Barrier Diode, TOSHIBA)
(Tantalum MCE Series, NICHICEMI)
(Tantalum MCE Series, NICHICEMI)
■EXTERNAL COMPONENTS
●COIL
SERIAL
RATED CURRENT
PART NUMBER MANUFACTURER L VALUE (μH) RESISTANCE (Ω)
(A)
CDRH127/LD-220
SUMIDA
22
36.4m
4.7
●INPUT / OUTPUT CAPACITANCE
PART NUMBER MANUFACTURER
16MCE476MD2
NICHICHEMI
VOLTAGE (V)
16.0
CAPACITANCE (μF)
47
W x L (mm)
H (mm)
12.3 x 12.3
8
W x L (mm)
4.6 x 5.8
H (mm)
3.2±0.2
●SCHOTTKY BARRIER DIODE
PART NUMBER MANUFACTURER
CMS02
TOSHIBA
REVERSE
CURRENT
30
FORWARD
CURRENT
3
VFmax (V)
IRmax (A)
0.4 (IF=3A) 0.5m (VR=30V)
W x L (mm)
H (mm)
2.4 x 4.7
0.98±0.1
●TRANSISTOR (P-ch MOSFET)
PART NUMBER MANUFACTURER
CPH6315
CPH3308
IRLMS6702
SANYO
SANYO
IR
ABSOLUTE MAX.
RATINGS
Rds(ON) MAX.(mΩ) Ciss TYP. (pF)
VDSS (V) VGSS (V) ID (A)
- 20
±10
-3
150 (VGS= -4.0V) 410 (VGS= -10V)
- 30
±20
-4
140 (VGS= -4.0V) 560 (VGS= -10V)
- 20
±12
- 2.3 200 (VGS= -4.5V) 210 (VGS= -15V)
●TRANSISTOR (N-ch MOSFET)
PART NUMBER MANUFACTURER VDSS (V) VGSS (V) ID (A) Rds(ON) MAX.(mΩ)
CPH3409
SANYO
30
+10
5.0
42@VGS=4.0V
CPH3408
IRLMS1902
IRLML2502
6/20
SANYO
IR
IR
30
20
20
+20
+12
+12
5.0
3.2
4.2
68@VGS=4.0V
100@VGS=4.5V
45@VGS=4.5V
VGS (off) (V)
PKG.
-1.4 (MAX.)
-2.4 (MAX.)
-0.7 (MAX.)
CPH6
CPH3
Micro6
Ciss TYP. (pF) VGS (off) (V)
630@VGS=10V 1.3 (MAX.)
PKG.
CPH3
480@VGS=10V
300@VGS=15V
740@VGS=15V
CPH3
Micro6
Micro3
2.4 (MAX.)
0.7 (MIN.)
1.2 (MAX.)
XC9303
Series
■TEST CIRCUITS
Circuit ①
Circuit ③
Circuit ②
Circuit ④
Circuit ⑤
External Components:
Circuit ①
L:
22μH (CDRH127/LD, SUMIDA)
SD:
CMS02 (Schottky Barriar Diode, TOSHIBA)
CL:
16MCE476MD2 (Tantalum Type, NIHONCHEMICON)
CIN:
16MCE476MD2 (Tantalum Type, NIHONCHEMICON)
PNP Tr1:
2SA1213 (TOSHIBA)
Tr2:
CPH3409 (SANYO)
Tr3:
CPH3409 (SANYO)
RFB:
Please use by the conditions as below.
RFB1 + RFB2 ≦ 1MΩ
RFB1 / RFB2 = (Setting Output Voltage / 0.9) -1
CFB:
fztb = 1 / (2 x π×CFB×RFB1) =1kHz ~ 50kHz (12kHz usual)
Circuit ③
L:
SD:
CL:
CIN:
Tr1:
Tr2:
Tr3:
22μH (CDRH127/LD, SUMIDA)
CMS02 (Schottky Barriar Diode, TOSHIBA)
16MCE476MD2 (Tantalum Type, NIHONCHEMICON)
16MCE476MD2 (Tantalum Type, NIHONCHEMICON)
CPH6315 (SANYO)
CPH3409 (SANYO)
CPH3409 (SANYO)
Circuit ④
L:
SD:
CL:
CIN:
Tr1:
Tr2:
22μH (CDRH127 / LD, SUMIDA)
CMS02 (Schottky Barriar Diode, TOSHIBA)
16MCE476MD2 (Tantalum Type, NIHONCHEMICON)
16MCE476MD2 (Tantalum Type, NIHONCHEMICON)
CPH6315 (SANYO)
CPH3409 (SANYO)
7/20
XC9303 Series
■NOTES ON USE
1. PWM/PFM Automatic Switching
If PWM/PFM automatic switching control is selected and the step-down ratio is high (e.g., from 10 V to 1.0 V), the control
mode remains in PFM setting over the whole load range, since the duty ratio under continuous-duty condition is smaller
than the PFM duty ratio of the XC9303 series. The output voltage's ripple voltage becomes substantially high under heavy
load conditions, with the XC9303 series appearing to be producing an abnormal oscillation. If this operation becomes a
concern, set pins PWM1 and PWM2 to High to set the control mode to PWM setting.
2. Ratings
Use the XC9303 series and peripheral components within the limits of their ratings.
3. Notes on How to Select Transistor
Synchronous rectification operation prepares fixed time when switching changes so that the high side P-ch MOSFET and
the low side N-ch MOSFET do not oscillate simultaneously. Also it is designed to prevent the penetration current when the
both MOSFET oscillate at the same time. However, some MOSFET may oscillate simultaneously and worsen efficiency.
Please select MOSFET with high Vth with small input capacity on high side P-ch MOSFET and the low side N-ch MOSFET.
(When using with large current, please note that there is a tendency for ON resistance to become large when the input
capacity of MOSFET is small and Vth is high.)
<The check method of whether selected MOSFET is oscillating simultaneously>
In order to check that MOSFET is not oscillating simultaneously, please observe Lx terminal waveform of coil current at the
time of the continuation mode. If the MOSFET parasitism diode waveform on Lx terminal waveform can be formed in the
period EXT 1 is 'H' and EXT2 is 'L', it can be thought that MOSFETs are not oscillating simultaneously.
4. Instruction on Layout
(1) The performance of the XC9303 DC/DC converter is greatly influenced by not only its own characteristics, but also by
those of the external components it is used with. We recommend that you refer to the specifications of each
component to be used and take sufficient care when selecting components.
(2) Please mount each external component as close to the IC as possible. Wire external components as close to the IC as
possible and use thick, short connecting wires to reduce wiring impedance. In particular, minimize the distance
between the EXT2 pin and the Gate pin of the low side N-ch MOSFET. It may decrease efficiency.
(3) Make sure that the GND wiring is as strong as possible as variations in ground potential caused by ground current at the
time of switching may result in unstable operation of the IC. Specifically, strengthen the ground wiring in the proximity
of the VSS pin.
(4) For stable operation, please connect by-pass capacitor between the VDD and the GND.
(5) Wiring between the GND pin of CIN and the Sauce pin of the low side N-ch MOSFET connect to the GND pin of the IC.
It may result in unstable operation of the IC.
■TYPICAL APPLICATION CIRCUIT
8/20
XC9303
Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
FOSC=300kHz, VOUT=5.0V
FOSC=300kHz, VOUT=3.3V
PWM/PFM Switching Control
PWM Control
3.4
5.1
4.2V 5.0V
3.3
3.2
5.2
Efficiency EFFI (%)
3.5
Output Voltage VOUT (V)
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
VIN=2.7V
3.3V
PWM/PFM Switching Control
PWM Control
5
4.9
VIN=3.0V
4.2V
4.8
3.1
6.0V
4.7
3.0
0.1
1
10
100
1000
0.1
10000
1
10
100
1000
10000
Output Current IOUT (mA)
Output Current IOUT (mA)
(2) Efficiency vs. Output Current
FOSC=300kHz, VOUT=3.3V
3.5
3.4
80
3.3
3.2
5.0V
PWM/PFM Switching Control
PWM Control
90
4.2V
PWM/PFM Switching Control
PWM Control
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
Efficiency EFFI (%)
Output Voltage VOUT (V)
FOSC=300kHz, VOUT=3.3V
L=22μH(CDRH127/LD), CL=94Fμ(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
VIN=2.7V
70
60
50
VIN=2.7V
40
3.3V
4.2V
30
20
3.1
10
0
3.0
0.1
1
10
100
1000
0.1
10000
1
Output Current IOUT (mA)
FOSC=300kHz, VOUT=5.0V
100
1000
10000
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
100
PWM/PFM Switching Control
PWM Control
90
80
PWM/PFM Switching Control
PWM Control
80
70
60
50
6.0V
VIN=3.0V
4.2V
40
30
20
Efficiency EFFI (%)
Efficiency EFFI (%)
100
FOSC=300kHz, VOUT=3.3V
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
90
10
Output Current IOUT (mA)
70
60
50
4.2V
40
VIN=2.7V
30
20
10
10
0
0.1
1
10
100
Output Current IOUT (mA)
1000
10000
0
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
9/20
XC9303 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current
FOSC=300kHz, VOUT=3.3V
FOSC=300kHz, VOUT=3.3V
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
PWM/PFM Switching Control
PWM Control
80
VIN=2.7V
3.3V
4.2V
5.0V
60
Ripple Voltage (mV)
Ripple Voltage (mV)
80
40
VIN=2.7V
3.3V
4.2V
5.0V
60
40
20
20
0
0
0.1
1
10
100
1000
0.1
10000
1
10
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
PWM/PFM Switching Control
80
Ripple Voltage (mV)
Ripple Voltage (mV)
VIN=3.0V
4.2V
6.0V
60
40
40
20
0
0
1
10
100
1000
VIN=3.0V
4.2V
6.0V
60
20
0.1
0.1
10000
1
FOSC=300kHz, VOUT=3.3V
PWM Control
4.2V
PWM/PFM Switching Control
80
VIN=2.7V
40
10000
4.2V
VIN=2.7V
60
40
20
20
0
0
0.1
1
10
100
Output Current IOUT (mA)
10/20
1000
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
100
Ripple Voltage (mV)
Ripple Voltage (mV)
60
100
FOSC=300kHz, VOUT=3.3V
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
80
10
Output Current IOUT (mA)
Output Current IOUT (mA)
100
10000
L=22μH(CDRH127/LD), CL=94μF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
PWM Control
80
1000
FOSC=300kHz, VOUT=5.0V
FOSC=300kHz, VOUT=5.0V
100
100
Output Current IOUT (mA)
Output Current IOUT (mA)
1000
10000
0.1
1
10
100
Output Current IOUT (mA)
1000
10000
XC9303
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) Supply Current 1 vs. Supply Voltage
(5) Supply Current 2 vs. Supply Voltage
XC9303B093 (300kHz)
600
300
500
250
Supply Current 2: IDD2 (μA)
Supply Current 1: IDD1 (μA)
XC9303B093 (300kHz)
Topr=85o C
25o C
-40o C
400
300
200
100
200
Topr=85o C
25o C
-40o C
150
100
50
0
0
0
2
4
6
8
Supply Voltage: VDD (V)
10
0
2
XC9303B093 (300kHz)
XC9303B093 (300kHz)
25
8
Soft-Start Time: TSS (msec)
10
Stand-by Current: ISTB (μA)
10
(7) Soft-start Time vs. Supply Voltage
(6) Stand-by Current vs. Supply Voltage
Topr=85o C
25o C
-40o C
6
4
2
20
15
Topr=85o C
25o C
-40o C
10
5
0
0
0
2
4
6
8
Supply Voltage: VDD (V)
0
10
2
4
6
8
Supply Voltage: VDD (V)
10
(9) PWM 'H' 'L' Voltage vs. Supply Voltage
(8) CE 'H' 'L' Voltage vs. Supply Voltage
XC9303B093 (300kHz)
XC9303B093 (300kHz)
0.8
PWM
(V)
0.8
0.6
-40o C
PWM 'H' 'L' Voltage: V
CE 'H' 'L' Voltage: V CE (V)
4
6
8
Supply Voltage: VDD (V)
0.4
Topr=25o C
85o C
0.2
0.6
-40o C
0.4
Topr=25o C
85o C
0.2
0
0
0
2
4
6
8
Supply Voltage: VDD (V)
10
0
2
4
6
8
Supply Voltage: VDD (V)
10
11/20
XC9303 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(10) Maximum Duty Ratio vs. Supply Voltage
(11) Oscillation Frequency vs. Supply Voltage
XC9303B093 (300kHz)
XC9303B093 (300kHz)
360
Oscillation Frequency: Fosc (kHz)
Max.Duty Ratio: Maxdty (%)
90
85
Topr=85o C
25o C
-40o C
80
75
70
65
330
85o C
300
Topr=25o C
270
-40o C
240
0
2
4
6
8
Supply Voltage: V DD (V)
10
0
2
XC9303B093 (300kHz)
EXT1 'L' ON Resistance
XC9303B093 (300kHz)
EXT1 'H' ON Resistance
80
EXT1 'L' ON Resistance:
REXTBL1 (Ω)
EXT1 'H' ON Resistance:
REXTBH1 (Ω)
80
60
60
Topr=85o C
25o C
-40o C
40
Topr=85o C
25o C
-40o C
40
20
20
0
0
0
2
4
6
8
Supply Voltage: VDD (V)
10
0
2
4
6
8
Supply Voltage: VDD (V)
10
(15) EXT2 Low ON Resistance vs. Supply Voltage
(14) EXT2 High ON Resistance vs. Supply Voltage
XC9303B093 (300kHz)
EXT2 'H' ON Resistance
XC9303B093 (300kHz)
EXT2 'L' ON Resistance
80
80
60
EXT2 'L' ON Resistance:
RESTBL2 (Ω)
EXT2 'H' ON Resistance:
RESTBH2 (Ω ）
10
(13) EXT1 Low ON Resistance vs. Supply Voltage
(12) EXT1 High ON Resistance vs. Supply Voltage
Topr=85o C
25o C
-40o C
40
20
60
Topr=85o C
25o C
-40o C
40
20
0
0
0
12/20
4
6
8
Supply Voltage: VDD (V)
2
4
6
8
Supply Voltage: VDD (V)
10
0
2
4
6
8
Supply Voltage: VDD (V)
10
XC9303
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Output Voltage vs. Ambient Temperature 1
(17) Output Voltage vs. Ambient Temperature 2
XC9303B093 (300kHz)
XC9303B093 (300kHz)
L=22uH (CDRH127/LD), CL=94uF (T antalum )
T r1:CPH6315, T r2:CPH3409,T r3:CPH3409
L=22uH (CDRH127/LD), CL=94uF (T antalum )
T r1:CPH6315, T r2:CPH3409,T r3:CPH3409
1.1
Output Voltage: VOUT (V)
Output Voltage: VOUT (V)
3.5
3.4
3.3
VIN=5.0V
IOUT=200mA
3.2
3.1
1.0
0.9
VIN=3.3V
IOUT=200mA
0.8
0.7
0.6
3.0
-50
-20
10
40
70
Ambient Temperature: Ta (0C)
100
-50
-20
10
40
70
Ambient Temperaure: Ta (0C)
100
(18) PFM Duty Ratio vs. Supply Voltage
XC9303B093 (300kHz)
PFM Duty Ratio: PFMDTY (%)
40
Topr=85o C
25o C
-40o C
35
30
25
20
0
2
4
6
8
Supply Voltage: VDD (V)
10
13/20
XC9303 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response
<VOUT1, 2 =3.3V, VIN=5.0V, IOUT1, 2 =100μA⇔100mA>
●Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100μA → 100mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100mA → 100μA
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2
100μA
100μA
CH2
10msec/div
CH1: VOUT, AC-COUPLED,100mV/div
CH2: IOUT, 50mA/div
200μsec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 50mA/div
●Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100μA → 100mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100mA → 100μA
3.3V
CH1
CH1
3.3V
100mA
100mA
100μA
CH2
10msec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 50mA/div
14/20
100μA
CH2
200μsec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 50mA/div
XC9303
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response (Continued)
<VOUT1, 2 =3.3V, VIN=2.7V, IOUT1, 2 =100μA⇔300mA>
●Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100μA → 300mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=300mA → 100μA
3.3V
CH1
CH1
3.3V
300mA
300mA
CH2
100μA
100μA
CH2
200μsec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 150mA/div
10msec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 150mA/div
●Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100μA → 300mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=300mA → 100μA
3.3V
CH1
3.3V
CH1
300mA
100μA
CH2
10msec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 150mA/div
300mA
100μA
CH2
200μsec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 150mA/div
15/20
XC9303 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response (Continued)
<VOUT1, 2 =3.3V, VIN=2.7V, IOUT1, 2 =100μA⇔300mA>
●Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100μA → 100mA
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100mA → 100μA
3.3V
CH1
CH1
3.3V
100mA
CH2
100μA
100mA
CH2
10msec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 50mA/div
100μA
200μsec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 50mA/div
●Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100μA → 100mA
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100mA → 100μA
3.3V
CH1
CH1
3.3V
100mA
300mA
CH2
100μA
10msec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 50mA/div
16/20
CH2
100μA
200μsec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 50mA/div
XC9303
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response (Continued)
<VOUT1, 2 =3.3V, VIN=2.7V, IOUT1, 2 =100μA⇔300mA>
●Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100μA → 300mA
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=300mA → 100μA
3.3V
CH1
CH1
3.3V
300mA
300mA
CH2
100μA
CH2
10msec/div
CH1: VOUT, AC-COUPLED,100mV/div
CH2: IOUT, 150mA/div
100μA
200μsec/div
CH1: VOUT, AC-COUPLED, 100mV/div
CH2: IOUT, 150mA/div
●Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=2.7V
VIN=2.7V, IOUT=100μA → 300mA
FOSC=300kHz, VOUT=2.7V
VIN=2.7V, IOUT=300mA → 100μA
3.3V
CH1
CH1
3.3V
300mA
300mA
CH2
100μA
10msec/div
CH1: VOUT, AC-COUPLED, 20mV/div
CH2: IOUT, 150mA/div
CH2
100μA
200μsec/div
CH1: VOUT, AC-COUPLED, 20mV/div
CH2: IOUT, 150mA/div
17/20
XC9303 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response (Continued)
<PWM Control ⇔ PWM/PFM Switching Control>
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=1mA PW M ’L’→ ’H’
FOSC=300kH, VOUT=3.3V
VIN=5.0V, IOUT=1mA PW M ’H’→ ’L’
3.3V
CH1
3.3V
CH1
0.65V
0.65V
0V
CH2
CH2
0V
1msec/div
CH1: VOUT, AC-COUPLED, 20mV/div
CH2: PW M, 0.3V/div
1msec/div
CH1:VOUT , AC-COUPLED ,20mV/div
CH2:PW M , 0.3V/div
<Soft-Start Wave Form>
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=300mA, CE ’L’→ ’H’
CIN=47μF
FOSC=300kHz, VOUT=3.3V
VIN=4.2V, IOUT=300mA, CE ’L’→ ’H’
CIN=47μF
3.3V
CH1
3.3V
CH1
230mA
410mA
CH2
CH2
0.65V
0.65V
CH3
18/20
10ms/div
CH1: VOUT, DC-COUPLED, 2.0V/div
CH2: IIN, 200mA/div
CH3: CE, 0.5V/div
CH3
10ms/div
CH1: VOUT, DC-COUPLED, 2.0V/div
CH2: IIN, 100mA/div
CH3: CE, 0.5V/div
XC9303
Series
■ PACKAGE INFORMATION
●MSOP-8A
■MARKING RULE
●MSOP-8A
① represents product series
MARK
PRODUCT SERIES
6
XC9303B093Kx
② represents type of DC/DC Controller
MSOP-8A
(TOP VIEW)
MARK
PRODUCT SERIES
B
XC9303B093Kx
③,④ represents out FB voltage
MARK
③
④
0
9
VOLTAGE (V)
PRODUCT SERIES
0.9
XC9303B093Kx
⑤ represents oscillation frequency
MARK
OSCILLATION FREQUENCY (kHz)
PRODUCT SERIES
3
300
XC9303B093Kx
⑥ represents production lot number
0 to 9,A to Z repeated (G, I, J, O, Q, W excluded)
Note: No character inversion used
19/20
XC9303 Series
1. The products and product specifications contained herein are subject to change without
notice to improve performance characteristics.
Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
2. We assume no responsibility for any infringement of patents, patent rights, or other
rights arising from the use of any information and circuitry in this datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet are not developed, designed, or approved for use with
such equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this datasheet within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We assume no responsibility for damage or loss due to abnormal use.
7. All rights reserved. No part of this datasheet may be copied or reproduced without the
prior permission of TOREX SEMICONDUCTOR LTD.
20/20