05S_1XC9201/9202新規 02.09.12 15:16 ページ 535
Series
PWM Controlled Step-Down DC/DC Converters
NInput
Voltage Range
NOutput
Voltage Range
: 2.5V ~20V
: 1.2V ~ 16V
600kHz
: up to 3.0A
■Applications
GMobile,
Cordless phones
GPalm
top computers, PDAs
GPortable
games
GCameras,
Digital cameras
GLaptops
NOscillation
Frequency Range : 100kHz ~
NOutput
Current
NMSOP-8A
Package
NCeramic
Capacitor Compatible
■General Description
The XC9201 series are step-up multiple current and voltage feedback
DC/DC controller ICs. Current sense, clock frequencies and amp
feedback gain can all be externally regulated.
A stable power supply is possible with output currents of up to 3.0A.With
output voltage fixed internally, V
OUT
is selectable in 0.1V steps within a
1.2V - 16.0V range (± 2.5%).
For output voltages outside this range, we recommend the FB version
which has a 0.9V internal reference voltage. Using this version, the
required output voltage can be set-up using 2 external resistors.
Switching frequencies can also be set-up externally within a range of
100~600 kHz and therefore frequencies suited to your particular
application can be selected.
With the current sense function, peak currents (which flow through the
driver transistor and the coil) can be controlled. Soft-start time can be
adjusted using external resistors and capacitors.
During shutdown (CE pin =L), consumption current can be reduced to as
little as 0.5µA (TYP.) or less and with U.V.L.O
(Under Voltage Lock Out) built-in, the external transistor will be
automatically shut off below the regulated voltage.
■Features
GStable
Operations via Current & Voltage Multiple Feedback
GUnlimited
Options for Peripheral Selection
GCurrent
Protection Circuit
GCeramic
Capacitor Compatible
5
■Typical Application Circuit
22μH
XP132A11A1SR
■Typical Performance
Characteristic
V
OUT
:5.0V FOSC:330kHz
100
1 EXT
2 Isen
U3FWJ44N
33mΩ
3 V
IN
240kΩ
4 CE/SS
94μF
0.33μF
1μF
Vss 8
V
OUT
7
GAIN 6
CLK 5
10KΩ
470pF
220pF
Efficiency：EFFI (%)
80
60
40
20
0
0.1
1
10
100
1000
10000
V
IN
=5.4V
7.2V
10.0V
12.0V
15.0V
40μF+220μF
Output Current：I
OUT
（mA）
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XC9201
Series
■Pin Configuration
EXT
Isen
V
IN
CE／SS
■Pin Assignment
PIN NUMBER
1
2
3
4
5
6
7
PIN NAME
EXT
Isen
V
IN
CE／SS
CLK
CC／GAIN
V
OUT
／FB
V
SS
FUNCTION
Driver
Current Sense
Power Input
CE/Soft Start
Clock Input
Phase Compensation
Voltage Sense
Ground
1
2
3
4
8
7
6
5
V
SS
V
OUT
／FB
CC／GAIN
CLK
■Product Classification
GOrdering
Information
ＸＣ９２０１
DESIGNATOR SYMBOL
C
D
8
5
DESCRIPTION
V
OUT
Soft-start externally set-up
FB
Soft-start externally set-up
Output Voltage : For voltages above 10V, see below :
10=A, 11=B, 12=C, 13=D, 14=E, 15=F, 16=H
e.g. V
OUT
=2.3V
→
w=2, e=3
V
OUT
=13.5V
→
w=D, e=5
FB products
→
w=0, e=9
fixed
Adjustable Frequency
MSOP-8A
Embossed tape. Standard Feed
Embossed tape. Reverse Feed
Number
A
K
R
L
The standard output voltages of the XC9201C series are 2.5V, 3.3V, and 5.0V.
Voltages other than those listed are semi-custom.
■Packaging Information
0.15
+0.08
-0.02
0.53±0.13
0∼
6ﾟ
GMSOP-8A
3.00±0.10
3.00±0.10
0.30
-0.02
+0.08
(0.65)
536
0.00∼0.20
0.86
-0.10
+0.20
1.02
-0.21
+0.11
4.90±0.10
05S_1XC9201/9202新規 02.09.12 15:16 ページ 537
XC9201
Series
■Marking
q Represents
the product series
SYMBOL
1
PRODUCT NAME
XC9201***AK*
MSOP8A
q w e
w Represents
the product type, DC/DC converter
SYMBOL
C
D
TYPE
V
OUT
、CE PIN
FB、CE PIN
PRODUCT NAME
XC9201C**AK*
XC9201D09AK*
r t y
e Represents
integral number of output voltage,or FB type
SYMBOL VOLTAGE
1
2
3
4
5
6
7
8
9
0
1. X
2. X
3. X
4. X
5. X
6. X
7. X
8. X
9. X
FB products
PRODUCT NAME
XC9201C1*AK*
XC9201C2*AK*
XC9201C3*AK*
XC9201C4*AK*
XC9201C5*AK*
XC9201C6*AK*
XC9201C7*AK*
XC9201C8*AK*
XC9201C9*AK*
XC9201D09AK*
SYMBOL VOLTAGE
A
B
C
D
E
F
H
10. X
11. X
12. X
13. X
14. X
15. X
16. X
PRODUCT NAME
XC9201CA*AK*
XC9201CB*AK*
XC9201CC*AK*
XC9201CD*AK*
XC9201CE*AK*
XC9201CF*AK*
XC9201CH*AK*
5
r Represents
decimal number of output voltage
SYMBOL
0
3
9
VOLTAGE
X. 0
X. 3
FB products
PRODUCT NAME
XC9201C*0AK*
XC9201C*3AK*
XC9201D09AK*
t Represents
oscillator frequeney's control type
SYMBOL
A
TYPE
Adjustable Frequency
PRODUCT NAME
XC9201***AK*
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XC9201
Series
■Block Diagram
EXT timming
controll
logic
Current
Limit
Protection
V
SS
EXT
V
OUT
R1
ISEN
Limitter comp.
PWM
MIX
CC/GAIN
Verr
R2
V
IN
Internal
Voltage
Regulator
2.0V
to internal
circuit
Sampling
Ierr
Ramp Wave,
Internal CLK
generator
5
CE/SS
Chip Enable,
Soft Start up,
U.V.L.O.
CE,UVLO
to internal
circuit
CLK
Vref generator
0.9V
■Absolute Maximum Ratings
PARAMETER
EXT Pin Voltage
ISEN Pin Voltage
V
IN
Pin Voltage
CE/SS Pin Voltage
CLK Pin Voltage
CC/GAIN Pin Voltage
V
OUT
/FB Pin Voltage
EXT Pin Current
Continuous Total
Power Dissipation
Operating Ambient
Temperature
Storage Temperature
SYMBOL
V
EXT
VIsen
V
IN
V
CE
V
CLK
V
CC
V
OUT
/FB
I
EXT
Pd
Topr
Tstg
RATINGS
−0.3∼V
DD
＋0.3
−0.3∼＋22
−0.3∼＋22
−0.3∼＋22
−0.3∼V
DD
＋0.3
−0.3∼V
DD
＋0.3
−0.3∼＋22
±100
150
−40∼＋85
−55∼＋125
Ta=25℃
UNITS
Ｖ
Ｖ
Ｖ
Ｖ
Ｖ
Ｖ
Ｖ
mA
mW
℃
℃
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XC9201
Series
■Electrical Characteristics
XC9201C25AR
PARAMETER
Output Voltage
Maximum Operating
Voltage
Minimum Operating
Voltage
Ta=25℃
SYMBOL
V
OUT
V
IN
max
V
IN
min
V
UVLO
I
DD
1
I
DD
2
I
STB
F
OSC
ΔF
OSC
ΔV
IN
½F
OSC
V
IN
=2.5V∼20V
V
IN
=3.75V
TOPR=−40∼+85℃
V
OUT
=V
SS
V
OUT
=V
IN
V
IN
pin voltage - I
SEN
pin voltage
V
IN
=3.75V, I
SEN
=3.75V
CE=V
IN
=20.0V, V
OUT
=0V
CE=0V, V
IN
=20.0V, V
OUT
=0V
Existance of CLK Oscillation,
V
OUT
=0V, CE：Voltage applied
90
4.5
−0.1
−0.1
0.6
150
7
0
0
100
0
220
13
0.1
0.1
±5
%
EXT voltage = High
V
IN
=3.75V, CE=V
IN
=V
OUT
V
IN
=20.0V, CE=V
IN
, V
OUT
=V
SS
V
IN
=3.75V, CE=V
OUT
=V
SS
RT=10.0kΩ, CT=220pF
280
I
OUT
=300mA
CONDITIONS
MIN.
2.438
20
−
1.0
TYP.
2.500
−
−
1.400
115
130
0.5
330
MAX.
2.562
−
2.200
2.0
220
235
2.0
380
UNITS CIRCUITS
V
V
V
V
μA
μA
μA
kHz
q
q
q
t
w
w
w
e
e
U.V.L.O. Voltage
Supply Current 1
Supply Current 2
Stand-by Current
CLK Oscillation
Frequency
Frequency Input
Stability
Frequency Temperature ΔF
OSC
Fluctuation
ΔT
OPR
½F
OSC
Maximum Duty Cycle MAXDTY
Minimum Duty Cycle
Current Limiter Voltage
I
SEN
Current
CE "High" Current
CE "Low" Current
CE "High" Voltage
MINDTY
I
LIM
I
ISEN
I
CEH
I
CEL
V
CEH
±5
%
%
%
mV
μA
μA
μA
V
e
r
r
y
y
t
t
t
5
CE "Low" Voltage
EXT "High"
ON Resistance
EXT "Low"
ON Resistance
Efficiency
(NOTE1)
Soft-start Time
CC/GAIN Pin
Output Impedance
V
CEL
R
EXTH
R
EXTL
EFFI
T
SS
R
CCGAIN
Dissapearance of CLK Oscillation,
V
OUT
=0V, CE：Voltage applied
EXT=V
IN
−0.4V, CE=V
OUT
=V
IN
*1
EXT=0.4V, CE=V
IN
, V
OUT
=V
SS
*1
27
24
93
Connect C
SS
and R
SS
, CE : 0V
→
3.75V
5
10
400
0.2
40
33
V
Ω
Ω
%
t
r
r
q
q
u
20
ms
kΩ
V
IN
= 3.75V unless specified
*1 : On resistance = 0.4V / measurement current
NOTE1 : EFFI = {[(Output Voltage) x (Output Current)]
÷
[(Input Voltage) x (Input Current)]} x 100
NOTE2 : The capacity range of the condenser used to set the external CLK frequency is 180
∼
300pF
539
