06S_15XC9301/02新規 02.9.12 3:28 PM ページ 597
Series
PWM, PWM/PFM Switching Step-Up & Down DC/DC Converter Controller ICs
NInput
Voltage Range : 2.0V ~10.0V
NOutput
Voltage Range : 2.4V ~ 6.0V (±2.5% accuracy)
NOscillation
Frequency Range
: 180kHz, 300kHz (±15% accuracy)
NMaximum
Duty Ratio : 85% (typ)
NPWM/PFM
Switching Step-Up & Down Control (XC9302)
NEfficiency
NSOT-25
Package
: 81% (typ) 5.0V , 78% (typ) 3.3V
■Applications
GMobile
phones
GPDAs
GPalmtop
computers
GPortable
audio equipment
GVarious
power supplies
■General Description
The XC9301/02 series are step-up/down DC/DC converter controller ICs
with fast, low ON resistance drivers built-in. A versatile, large output
current, step-up/down DC/DC converter can be realised using only 4
basic external components - transistors, coils, diodes and capacitors.
Output voltage is selectable in 0.1V steps within a 2.4V ~ 6.0V ( ± 2.5%
accuracy) range and switching frequency is set at 180kHz or 300KHz.
The XC9302 series switches from PWM to PFM control during light loads
and the series offers high efficiencies from light loads through to large
output currents.
Soft-start time is internally set to 10 msec which offers protection against
rush currents when the power is switched on and also against voltage
overshoot.
During shutdown (CE pin = L), consumption current can be reduced to
as little as 0.5µA or less.
■Features
Input Voltage Range
: 2.0V ~ 10V
Output Voltage Range
: 2.4V ~ 6.0V ( ± 2.5% accuracy)
(selectable in 0.1V steps)
Oscillation Frequency
: 180KHz, 300KHz ( ± 15% accuracy)
Output Current
: more than 250mA (V
IN
=2.4V,
Efficiency
Stand-By
V
OUT
=3.3V)
: 81% (typ) at 5.0V, 78% (typ) at 3.3V
: ISTB = 0.5µA (max)
6
Output Voltage Internal Set-Up
SOT-25 Package
■Typical Application Circuit
V
OUT
SD2
L
PSW
V
IN
■Typical Performance Characteristic
100
Efficiency:EFFI （%）
80
NSW
SD1
60
V
IN
=2V
40
4V
20
6V
C
L
C
IN
CE
0
0. 1
1
10
100
1000
Output Current:I
OUT
（mA）
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XC9301/9302
Series
■Pin Configuration
5
4
■Pin Assignment
PIN NUMBER
1
2
3
PIN NAME
GND
V
DD
EXT/
V
OUT
CE
FUNCTION
Ground
Power Supply
External Tr. Drive
Output Voltage Monitor
Chip Enable
1
2
SOT-25
3
4
5
■Product Classification
GOrdering
Information
ＸＣ９３０１
XC9301 Series PWM control
DESIGNATOR SYMBOL
DESCRIPTION
A
Standard (5-pin)
Output Voltage
e.g. V
OUT
=3.0V→w=3,
e=0,
V
OUT
=5.3V→w=5,
e=3
Oscillation Frequency:
2
180kHz
300kHz
3
Package:
SOT-25
M
R
Embossed Tape:
Standard
L
Reverse
ＸＣ９３０２
XC9302 Series PWM/PFM switching control（same as XC9302 Series）
6
■Packaging Information
GSOT-25
0.15
-0.05
0.4
+0.1
-0.05
+0.1
0∼0.1
2.8±0.2
1.6
+0.2
-0.1
（0.95）
1.9±0.2
2.9±0.2
1.1±0.1
598
0.2min
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XC9301/9302
Series
■Marking
q
Represents the Product Classification
qwer
DESIGNATOR
A
K
SOT-25
(TOP VIEW)
PRODUCT NAME
XC9301A＊＊＊M＊
XC9302A＊＊＊M＊
w
Represents the integer of the Output Voltage and Oscillation Frequency
OUTPUT
VOLTAGE（V）
2.X
3.X
4.X
5.X
6.X
DESIGNATOR
FREQUENCY=180
kHz
FREQUENCY=300
kHz
（XC9301/XC9302A＊＊2M＊） （XC9301/XC9302A＊＊3M＊）
2
3
4
5
6
2
3
4
5
6
e
Represents the decimal number of the Output Voltage and Oscillation Frequency
DESIGNATOR
OUTPUT
VOLTAGE（V）
X.0
X.1
X.2
X.3
X.4
X.5
X.6
X.7
X.8
X.9
FREQUENCY=180
kHz
FREQUENCY=300
kHz
（XC9301/XC9302A＊＊2M＊） （XC9301/XC9302A＊＊3M＊）
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
H
K
L
M
6
r
Denotes the production lot number
0 to 9, A to Z repeated(G.I.J.O.Q.W excepted)
599
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XC9301/9302
Series
■Block Diagram
V
OUT
Phase
Compensation
V
DD
Error Amp.
+
-
+
-
Buffer,
Driver
PWM
Comparator
EXT/
CE
Vref with
Soft Start,
CE
PWM/PFM
Controller
Ramp Wave
Generator,
OSC
GND
6
■Absolute Maximum Ratings
Ta = 25℃
PARAMETER
V
DD
Pin Voltage
V
OUT
Pin Voltage
CE Pin Voltage
EXT / Pin Voltage
EXT / Pin Current
Power Dissipation
Operating Ambient Temp.
Storage Temp.
SYMBOL
V
DD
V
OUT
V
CE
V
EXT
/
I
EXT
/
Pd
Topr
Tstg
RATINGS
-0.3∼12
-0.3∼12
-0.3∼12
-0.3∼V
DD
+0.3
±100
150
-40∼+85
-40∼+125
UNITS
V
V
V
V
mA
mW
℃
℃
600
06S_15XC9301/02新規 02.9.12 3:28 PM ページ 601
XC9301/9302
Series
■Electrical Characteristics
XC9301x332MR,XC9302x332MR
PARAMETER
Output Voltage
Supply Voltage
Supply Current 1
Supply Current 2
Stand-By Current
Oscillation Frequency
Max. Duty Ratio
PFM Duty
Ratio
Note1
Efficiency
Note2
Soft-Start Time
CE 'H' Voltage
CE 'L' Voltage
EXT/ 'H' ON Resistance
EXT/ 'L' ON Resistance
SYMBOL
V
OUT
V
DD
I
DD
1
I
DD
2
I
STB
F
OSC
V
OUT
=CE: Set Output Voltage × 0.95 applied
V
OUT
=CE: Set Output Voltage + 0.5 applied
V
OUT
: Set Output Voltage × 0.95 applied, CE=0V
V
DD
=V
OUT
=CE: Set Output Voltage × 0.95 applied
CONDITIONS
(V
OUT
=3.3V, F
OSC
=180kHz)
MIN.
3.218
2.0
½
½
½
153
78
15
½
5.0
V
OUT
: Set Output Voltage × 0.95 applied
V
OUT
: Set Output Voltage × 0.95 applied
Same as I
DD
1, V
EXT
/ = V
OUT
- 0.4V
Same as I
DD
1, V
EXT
/ = 0.4V
0.65
½
½
½
TYP.
3.300
½
80
15
½
180
85
25
78
10.0
½
½
29
19
MAX.
3.383
10.0
140
26
0.5
207
92
35
½
20.0
½
0.20
43
27
Ta=25℃
UNITS
V
V
μA
μA
μA
KHz
%
%
%
mS
V
V
Ω
Ω
MAXDTY V
DD
=V
OUT
=CE: Set Output Voltage × 0.95 applied
PFMDTY No Load
EFFI
T
SS
V
CEH
V
CEL
R
EXTBH
R
EXTBL
V
DD
=V
IN
=CE: Set Output Voltage × 0.95 applied
Measuring Conditions : Unless otherwise stated, V
DD
= 3.3V, I
OUT
= 130mA
Note: 1. XC9302 series only
2. EFFI={[(Output Voltage) × (Output Current)] ÷ [(Input Voltage) × (Input Current)]} × 100
XC9301x333MR, XC9302x333MR
PARAMETER
Output Voltage
Supply Voltage
Supply Current 1
Supply Current 2
Stand-By Current
Oscillation Frequency
Max. Duty Ratio
PFM Duty Ratio
Note1
Efficiency
Note2
Soft-Start Time
CE 'H' Voltage
CE 'L' Voltage
SYMBOL
V
OUT
V
DD
I
DD
1
I
DD
2
I
STB
F
OSC
CONDITIONS
(V
OUT
=3.3V, F
OSC
=300kHz)
MIN.
3.218
2.0
TYP.
3.300
½
130
20
½
300
85
25
78
10.0
½
½
29
19
MAX.
3.383
10.0
200
35
0.5
345
92
35
½
20.0
½
0.20
43
27
Ta=25℃
UNITS
V
V
μA
μA
μA
KHz
%
%
%
mS
V
V
Ω
Ω
6
V
OUT
=CE: Set Output Voltage × 0.95 applied
V
OUT
=CE: Set Output Voltage + 0.5 applied
V
OUT
: Set Output Voltage x 0.95 applied, CE=0V
V
DD
=V
OUT
=CE: Set Output Voltage × 0.95 applied
½
½
½
255
78
15
½
5.0
0.65
½
½
½
MAXDTY V
DD
=V
OUT
=CE: Set Output Voltage × 0.95 applied
PFMDTY No Load
EFFI
T
SS
V
CEH
V
CEL
V
OUT
: Set Output Voltage × 0.95 applied
V
OUT
: Set Output Voltage × 0.95 applied
Same as I
DD
1, V
EXT
/ = V
OUT
- 0.4V
Same as I
DD
1, V
EXT
/ = 0.4V
V
DD
=V
IN
=CE: Set Output Voltage × 0.95 applied
EXT/ 'H' ON Resistance R
EXTBH
EXT/ 'L' ON Resistance R
EXTBL
Measuring Conditions : Unless otherwise stated, V
DD
= 3.3V, I
OUT
= 130mA
Note: 1. XC9302 series only
2. EFFI={[(Output Voltage) × (Output Current)] ÷ [(Input Voltage) × (Input Current)]} × 100
■Typical Application Circuit
GCircuit
Connection Example
V
OUT
SD2
L
PSW
V
IN
External Components
PSW : XP162A12 ( SOT-89 pkg, Torex )
NSW : XP161A12 ( SOT-89 pkg, Torex )
L
: 22μH ( Sumida CR54 )
SD
C
L
C
IN
C
IN
CE
: U2FWJ44N ( Schottky, Toshiba )
: 16V, 47μF × 2 ( Tantalum, Nichicon MCE )
: 16V, 22μF ( Tantalum, Nichicon MCE )
220μF (Nichicon, PJ)
NSW
SD1
C
L
601
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