Series
Low Frequency PWM Controlled, Step‐Up DC/DC Converters
NCMOS
Low Power Consumption
NOperating
Voltage
NOutput
Voltage Range
NOscillator
Frequency
: 0.9V~10.0V
: 2.0V~7.0V
: 30kHz
■Applications
GCellular
phones, pagers
GPalmtops
GCameras,
video recorders
GPortable
equipment
NOutput
Voltage Accuracy : ±2.5%
4
■General Description
The XC6373 is a group of PWM controlled step-up DC/DC converter ICs.
The XC6373 series employs CMOS process and laser trimming
technologies so as to attain low power and high accuracy.
The implemention of a new phase compensation circuit and a slow start
function ensure excellent transient response and improved performance.
The series is particularly suited for use with pager applications because
of their low power consumption and low noise characteristics.
Output voltage can be selected from 2.0V to 7.0V in 0.1V increments
(accuracy; ±2.5%). Oscillator frequency is set at 30kHZ (±20%) so as to
attain the lowest consumption current possible.
A step-up converter circuit can be configured using the XC6373 IC with a
coil, a diode, and a capacitor.
5-pin packages, which are provided with either a CE (Chip enable)
function that reduces power consumption during shut-down mode, or a
V
DD
pin (separated power and voltage detect pins) are available.
SOT-89 small package.
■Features
Operating (start-up) voltage range
: 0.9V~10V
Output voltage range
: 2.0V~7.0V in 0.1V increments
Highly accurate
: Set-up voltage ±2.5%
Oscillator frequency
: 30kHz (±20%)
Maximum output current (Tr. Built-In)
: 50mA (TYP.) @ V
IN
=3.0V,
V
OUT
=5.0V ....Note (1)
Highly efficient (Tr. Built-In)
: 82% (TYP.) @ V
IN
=3.0V,
V
OUT
=5.0V ....Note (1)
Either chip enable or independent V
OUT
pin option is
selectable for 5-pin package units.
Phase compensation and slow start-up circuits included.
Small Package
: SOT-89 mini-power mold (3-pin, 5-pin)
Note (1): Performance depends on external components and
PCB layout.
■Typical Application Circuit
SD
L
V
OUT
■Typical Performance
Characteristic
XC6373A300PR
100
L＝100μH
（CＲ54）C
L
＝47μF
，
（Tantalum）
V
IN
C
IN
Efficiency:EFFI (%)
SOT−89
(TOP VIEW)
C
L
（Tantalum）
80
60
40
20
0
0.1
1
10
V
IN
=0.9V
1.2V
1.5V
2.7V
1.8V
1
2
3
GND
100
1000
Output Current:I
OUT
（mA）
465
XC6373
Series
■Pin Configulation
5
4
■Pin Assignment
(XC6373A)
PIN NUMBER PIN NAME
1
2
3
V
SS
V
OUT
L
X
FUNCTION
Ground
Output voltage monitor,
IC internal power supply
Switch
1
2
3
1
2
3
SOT-89
(TOP VIEW)
SOT-89-5
(TOP VIEW)
(XC6373C)
PIN NUMBER PIN NAME
5
2
4
V
SS
V
OUT
L
X
CE
NC
FUNCTION
Ground
Output voltage monitor,
IC internal power supply
Switch
Chip enable
No connection
4
3
1
(XC6373E)
PIN NUMBER PIN NAME
5
2
4
3
1
V
SS
V
DD
L
X
V
OUT
NC
FUNCTION
Ground
IC internal power supply
Switch
Output voltage monitor
No connection
■Product Classification
GSelection
Guide
PART TYPE
OPERATION
MODE
PWM
PACKAGE
SWITCHING
Built-in Transistor
"Lx" lead
Built-in Transistor
"Lx" lead
Built-in Transistor
"Lx" lead
Chip Enable(CE)
Function
Separated
"V
DD
" and "V
OUT
"
ADDITIONAL
FUNCTION
FEATURES
Switching transistor incorporated standard type.
Low ripple and highly efficient from low current
to high current.
Stand-by (CE) capability added version to the
XC6373A. Stand-by current; 0.50µA max.
Individual power supply and set-up voltage sensing
leads are available.
XC6373A
SOT-89
XC6373C
PWM
SOT-89-5
XC6373E
PWM
SOT-89-5
GOrdering
Information
XC6373 Series
q
w
e
r
t
y
O
P
R
L
A
C
E
XC6373qwerty
PWM Controlled
3-pin.
Built-in switching transistor
Stand-by capability.
Built-in switching transistor
Separated V
DD
and V
OUT
Built-in switching transistor
Output Voltage
(e.g.,V
OUT
=3.5V
➔
w=3, e=5)
OSC Frequency
30kHz
Package
q=A
➔
SOT-89
q=C,E
➔
SOT-89-5
Embossed tape: Standard Feed
Embossed tape: Reverse Feed
466
XC6373
Series
■Marking
w
q
r
e
2
1
4
3
SOT-89
(TOP VIEW)
SOT-89-5
(TOP VIEW)
q
Represents the Product Classification
DESIGNATOR
A
A
S
−
CE
Separated V
DD and
V
OUT
FUNCTION
Built-in Transistor
Built-in Transistor
Built-in Transistor
PRODUCT
NAME
XC6373A＊＊＊P＊
XC6373C＊＊＊P＊
XC6373E＊＊＊P＊
4
w
Represents the integer of the Output Voltage and Oscillator Frequency
INTEGER OF THE
OUTPUT VOLTAGE
1.X
2.X
3.X
4.X
5.X
6.X
7.X
OSCILLATOR FREQUENCY
（PRODUCT NAME）
30
kHz
（XC6373＊＊＊0P＊）
B
C
D
E
F
H
K
e
Represents the decimal number of the Output Voltage and Oscillator Frequency
THE DECIMAL NUMBER
OF OUTPUT VOLTAGE
X.0
X.1
X.2
X.3
X.4
X.5
X.6
X.7
X.8
X.9
OSCILLATOR FREQUENCY
（PRODUCT NAME）
30
kHz
（XC6373＊＊＊0P＊）
0
1
2
3
4
5
6
7
8
9
r
Denotes the production lot number
0 to 9, A to Z repeated(G.I.J.O.Q.W excepted)
468
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