☆GO-Compatible
◆Input
Voltage Range : 2.2~10.0V
◆Output
Voltage Range : 1.5~6.0V (±2.5%)
◆Oscillator
Frequency : 300kHz (±15%)
◆Maximum
Duty Ratio : 100%
◆High
Efficiency
: 92%
◆PWM/PFM
Switching Control (XC6366)
◆SOT-25
Package
■APPLICATIONS
●Electronic
information organizers
●Palmtops
●Cellular
and portable phones
●Portable
audio systems
●Various
multi-function power supplies
■GENERAL
DESCRIPTION
The XC6365/66 series are multi-functional step-down DC/DC
converters with built-in high speed, low ON resistance drivers.
An output current of more than 1A is possible using an
externally connected transistor, coil, diode and capacitor.
Output voltage is programmable in 100mV increments between
1.5V to 6.0V (V
OUT
) (±2.5% accuracy). Further, with 1.0V of
standard voltage supply internal and using externally
connected components, output voltage can be set up freely
(FB). With a 300kHz switching frequency, the size of the
external components can be reduced.
Control switches from PWM to PFM during light loads with the
XC6366 (PWM/PFM switchable) and the series is highly
efficient from light loads to large output currents.
In relation to soft-start time, both internally set-up 10msec
types (A, B) and external resistor or capacitor regulated types
(C, D) are available.
During stand-by time (CE pin "Low" ), current consumption is
reduced to less than 0.5μA.
With U.V.L.O. internal, the external transistor will be forcibly
switched off if used below the stipulated voltage.
■FEATURES
Input Voltage Range
: 2.2V ~ 10V (V
OUT
type)
Output Voltage Range
: 1.5V ~ 6.0V programmable in
100mV increments (±2.5%)
Oscillation Frequency
: 300kHz (±15%)
: Custom products for 180, 500kHz
Output Current
High Efficiency
: More than 1.0A
(V
IN
=5.0V, V
OUT
=3.0V)
: 92% (TYP.)
Stand-by Capability
: ISTB=0.5μA (MAX.)
Soft-start time set-up externally type possible
Internally set-up output voltage type possible (V
OUT
)
Externally set-up output voltage type possible (FB)
Package
: SOT-25
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
XC6365 6366 ETR0501_001.doc
703
XC6365/6366
Series
■PIN
CONFIGURATION
■PIN
ASSIGNMENT
PIN NUMBER
1
2
3
4
5
PIN NAME
EXT/
V
DD
GND
CE
V
OUT
(FB)
FUNCTION
External Transistor Connection
Power Supply
Ground
Chip Enable Soft-Start Capacitor Connection
with Soft-Start Externally Set-Up Types (C, D)
Output Voltage Monitor FB with Externally
Set-Up Types (B, D)
■PRODUCT
CLASSIFICATION
●Selection
Guide
704
XC6365/6366
Series
■PRODUCT
CLASSIFICATION (Continued)
●Ordering
Information
XC6365①②③④⑤⑥
XC6366①②③④⑤⑥
DESIGNATOR
PWM control
PWM/PFM switching control
DESCRIPTION
SYMBOL
A
①
Type of DC/DC Converter
B
C
D
② ③
Output Voltage
15½60
10
3
④
Oscillation Frequency
Package
Device Orientation
5
2
⑤
⑥
M
R
L
DESCRIPTION
: V
OUT
type: Internally set-up, soft-start internally set-up
: FB type: Externally set-up, soft-start internally set-up
: V
OUT
type: Internally set-up, soft-start externally set-up
: FB type: Externally set-up, soft-start internally set-up
: V
OUT
type: 3.0V output
→ ②=3, ③=0
: FB type: 10 fixed
→ ②=1, ③=0
fixed
: 300kHz
: 500kHz (custom)
: 180kHz (custom)
: SOT-25 (SOT-23-5)
: Embossed tape, standard feed
: Embossed tape, reverse feed
■PACKAGING
INFORMATION
●SOT-25
705
XC6365/6366
Series
■MARKING
RULE
①Represents
product classification
5
①
②
4
③ ④
MARK
A
B
C
D
PRODUCT SERIES
XC6365A
XC6365B
XC6365C
XC6365D
MARK
K
L
M
N
PRODUCT SERIES
XC6366A
XC6366B
XC6366C
XC6366D
1
2
3
SOT-25
(TOP VIEW)
②Represents
integer of output voltage and oscillation frequency
OUTPUT VOLTAGE
1.x
2.x
3.x
4.x
5.x
6.x
100
B
C
D
E
F
H
OSCILLATION FREQUENCY (kHz)
180
300
1
2
3
4
5
6
1
2
3
4
5
6
500
B
C
D
E
F
H
③Represents
decimal number of output voltage and oscillation frequency
OUTPUT VOLTAGE
x.0
x.1
x.2
x.3
x.4
x.5
x.6
x.7
x.8
x.9
100
0
1
2
3
4
5
6
7
8
9
OSCILLATION FREQUENCY (kHz)
180
300
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
H
K
L
M
500
A
B
C
D
E
F
H
K
L
M
④Represents
production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
706
XC6365/6366
Series
■BLOCK
DIAGRAMS
XC6365, XC6366 Series A, C type (V
OUT
)
XC6365, XC6366 Series B, D type (FB)
707
