TOREX XC6371_2

XC6371/XC6372/XC6373 Series
ETR0402_002
PWM Controlled Step - Up DC/DC Contorollers/Convereters
☆GO-Compatible
■GENERAL DESCRIPTION
The XC6371/6372/6373 series are a group of PWM controlled and PWM/PFM controlled step-up DC/DC converters. The
built-in 1.4Ω switching transistor type enables a step-up circuit to be configured using only three components, a coil, a diode,
and a capacitor.
Output voltage can be selectable in the range from 2.0V to 7.0V in increments of 100mV (accuracy:±2.5%). Oscillation
frequency is also selectable from 50kHz, 100kHz, and 180kHz (accuracy:±15%) for the XC6371 and the XC6372 series.
Soft-start time is internally set and offers protection against in-rush currents when the power is switched on and prevents
voltage overshoot. 5 pin packages, which are provided with either a CE (chip enable) function that reduces power
consumption during shut-down mode, or a VDD pin (separated power and voltage detect pins) are available.
The XC6371 series is the standard PWM controlled products. The control of the XC6372 series switches from PWM to PFM
control during light loads when automatically switching is selected and the series is highly efficient from light loads to large
output currents. Since the XC6373 series is a low noise, it is suitable for a wireless circuit. Also the series is particularly
suited for use with pager applications because oscillation frequency is set at 30kHz (±20%) so as to attain the lowest
consumption current possible.
■APPLICATIONS
●Cellular phones, Pagers
●Palmtops
●Cameras, Video recorders
●Portable products
■TYPICAL APPLICATION CIRCUIT
■FEATURES
Operation Start Voltage Range
Output Voltage Range
Highly Accurate
Oscillation Frequency
: 0.9V~10V
: 2.0V~7.0V in 100mV increments
: Setting voltage accuracy±2.5%
: 50kHz, 100kHz, 180kHz (±15%)
selectable (XC6371/72)
30kHz (XC6373)
Maximum Output Currents (Tr. built-in)
: 100mA(TYP.) @ VIN=3.0V, VOUT=5.0V *
Highly Efficient (Tr. built-in)
: 85%(TYP.) @ VIN=3.0V, VOUT=5.0V *
Built-in switching transistor type.
Five-lead packaged units offer either chip enable or
independent VOUT pin option.
Phase compensation and soft start-up circuits built-in.
CMOS Low Power Consumption
Small Packages
: SOT-89, SOT-89-5,USP-6B
*: Performance depends on external components and
PCB layout.
■TYPICAL PERFORMANCE
CHARACTERISTICS
1/19
XC6371/XC6372/XC6373 Series
■PIN CONFIGURATION
*The dissipation pad for the USP-6B
package should be solder-plated in
recommended mount pattern and metal
masking so as to enhance mounting
strength and heat release. If the pad needs
to be connected to other pins, it should be
connected to the pin No.1.
■PIN ASSIGNMENT
XC6371/72/73A
PIN NUMBER
SOT-89
USP-6B
1
2
3
-
6
1
4
2, 3, 5
PIN NAME
FUNCTION
VSS
VOUT
Lx
NC
Ground
Output Voltage Monitor/IC Internal Power Supply
Switch
No Connection
PIN NAME
FUNCTION
XC6371/72/73C
PIN NUMBER
SOT-89-5
USP-6B
5
2
4
3
6
1
4
3
VSS
VOUT
Lx
CE
Ground
Output Voltage Monitor/IC Internal Power Supply
Switch
Chip Enable
1
2, 5
NC
No Connection
PIN NAME
FUNCTION
XC6371/72/73E
PIN NUMBER
2/19
SOT-89-5
USP-6B
5
2
4
3
6
1
4
3
VSS
VDD
Lx
VOUT
Ground
IC Internal Power Supply
Switch
Output Voltage Monitor
1
2, 5
NC
No Connection
XC6371/XC6372/XC6373
Series
■PRODUCT CLASSIFICATION
●Selection Guide
START
PWM
Low Frequency PWM
XC6371
XC6373
PWM/PFM
Standard
XC6371/73A
Chip Enable
XC6371/73C
Separated
VDD/VOUT
XC6371/73E
Standard
XC6372A
Chip Enable
XC6372C
Separated
VDD/VOUT
XC6372E
●Ordering Information
XC6371①②③④⑤⑥ : PWM controlled
XC6372①②③④⑤⑥ : PWM/PFM switching control
XC6371 Series
DESIGNATOR
DESCRIPTION
SYMBOL
①
Type of
DC/DC Converter
A
C
E
② ③
Output Voltage
Integer
④
Oscillation Frequency
0
1
2
⑤
Package
⑥
Device Orientation
P
DESCRIPTION
: 3-pin DC/DC converter with built-in switching transistor
: Stand-by capability with built-in switching transistor
: Separated VDD and VOUT with built-in switching transistor
: e.g. VOUT=3.5V→②=3,
③=5
: 50kHz
: 100kHz
: 180kHz
: SOT-89 (XC6371/72 A type)
D
R
: SOT-89-5 (XC6371/72 C/D type)
: USP-6B
: Embossed tape, standard feed
L
: Embossed tape, reverse feed
XC6373①②③④⑤⑥ : PWM controlled
DESIGNATOR
DESCRIPTION
SYMBOL
①
Type of
DC/DC Converter
A
C
E
②
③
Output Voltage
Integer
④
Oscillation Frequency
0
⑤
Package
⑥
Device Orientation
P
DESCRIPTION
: 3-pin DC/DC converter with built-in switching transistor
: Stand-by capability with built-in switching transistor
: Separated VDD and VOUT with built-in switching transistor
: e.g. VOUT=3.5V→②=3,
③=5
: 30kHz
: SOT-89 (XC6373 A type)
D
R
: SOT-89-5 (XC6373 C/D type)
: USP-6B
: Embossed tape, standard feed
L
: Embossed tape, reverse feed
3/19
XC6371/XC6372/XC6373 Series
■BLOCK DIAGRAMS
XC6371/72/73A, C
(The VOUT pin serves also as VDD)
(
p
)
Lx
VLx l imi ter
Buffer
VDD
Vref
PWM Control
OSC 50/100/180KHz
VSS
Soft Start
VOUT
Phase comp
+
-
EXT
Chip Enable
CE
Note: The CE pin is only used with the XC6371C.
XC6371/72/73E
VDD
VDD
Lx
VLx l imi ter
Buffer
VSS
PWM Control
OSC 50/100/180KHz
Soft Start
Vref
Phase comp
VOUT
+
-
EXT
Note: Built-in transistor type units use the Lx pin.
■ABSOLUTE MAXIMUM RATINGS
Ta=25℃
4/19
PARAMETER
VOUT Input Voltage
LX pin Voltage
LX pin Current
CE Input Voltage
SOT-89, 89-5
Power Dissipation
USP-6B
VDD Input Voltage
Operating Temperature Range
SYMBOL
VOUT
VLX
ILX
VCE
UNITS
V
V
mA
V
VDD
Topr
RATINGS
12
12
400
12
500
100
12
-30~+80
Storage Temperature Range
Tstg
-40~+125
℃
Pd
mW
V
℃
XC6371/XC6372/XC6373
Series
■ELECTRICAL CHARACTERISTICS
VOUT=5.0V, FOSC=100kHZ
XC6371/72A501PR
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
VOUT
Maximum Input Voltage
VIN
Operation Start Voltage
VST1
External Components Connected, IOUT=1mA
No external components. Apply voltage to VOUT
Oscillation Start Voltage
VST2
Lx : 10kΩ pull-up to 5V
No Load Input Current
IIN
VIN=VOUT×0.8, IOUT=0mA (*1)
Same as VST2,
Supply Current 1
IDD1
Apply output voltage×0.95 to VOUT
Same as VST2,
Supply Current 2
IDD2
Apply output voltage×1.1 to VOUT
Lx Switch-On
RSWON
Same as IDD1, VLX=0.4V
Resistance
Lx Leak Current
ILXL
No external components. VOUT=VLX=10V
Oscillation Frequency
FOSC
Same as IDD1. Measuring of Lx waveform
Maximum Duty Ratio
MAXDTY
Same as IDD1. Measuring of Lx waveform
PFM Duty Ratio (*4)
PFMDTY
Same as IDD1. Measuring of Lx waveform
Same as IDD1. Apply output voltage to Lx,
Lx Limit Voltage
VLXLMT
Voltage required to produce FOSC×2
Efficiency
EFFI
Slow-Start Time
TSS
Ta=25℃
MAX. UNITS
5.125
V
V
0.90
V
MIN.
4.875
10
-
TYP.
5.000
-
-
-
0.80
V
-
12.8
25.7
μA
-
80.2
133.8
μA
-
8.2
16.5
μA
-
1.4
2.4
Ω
85
80
10
100
87
17
1.0
115
92
25
μA
kHz
%
%
0.7
-
1.3
V
4.0
85
10.0
20.0
%
mS
NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit1
*1: The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0μA at reverse voltage (VR)=10.0V.(XC6372A)
*2: "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically
operates which results in less average power consumption. The current actually provided by an external VIN source is represented by
"No Load Input Current (IIN)".
*3: When PWM operates at PWM Mode.
*4: When PFM operates at PFM Mode.(XC6372A)
5/19
XC6371/XC6372/XC6373 Series
■ELECTRICAL CHARACTERISTICS (Continued)
VOUT=5.0V, FOSC=100kHz
XC6371/72C501PR
PARAMETER
Output Voltage
Maximum Input Voltage
Operation Start Voltage
SYMBOL
VOUT
VIN
VST1
Operation Start Voltage
VST2
No Load Input Current
IIN
Supply Current 1
IDD1
Supply Current 2
IDD2
CONDITIONS
External Components Connected, IOUT=1mA
No external components. Apply voltage to VOUT,
Lx : 10kΩ pull-up to 5V
VIN=VOUT×0.8, IOUT=0mA (*1)
Same as VST2,
Apply output voltage×0.95 to VOUT
Same as VST2,
Apply output voltage×1.1 to VOUT
Ta=25℃
MIN.
4.875
10
-
TYP.
5.000
-
MAX.
5.125
0.90
UNITS
V
V
V
-
-
0.80
V
-
12.8
25.7
μA
-
80.2
133.8
μA
-
8.2
16.5
μA
Lx Switch-On
Resistance
Lx Leak Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (*4)
Stand-by Current
CE "High" Voltage
CE "Low" Voltage
CE "High" Current
CE "Low" Current
RSWON
Same as IDD1, VLx=0.4V
-
1.4
2.4
Ω
ILXL
FOSC
MAXDTY
PFMDTY
ISTB
VCEH
VCEL
ICEH
ICEL
85
80
10
0.75
-
100
87
17
-
1.0
115
92
25
0.5
0.20
0.25
-0.25
μA
kHZ
%
%
μA
V
V
μA
μA
Lx Limit Voltage
VLxLMT
No external components, VOUT =VLX=10V
Same as IDD1, Measuring of Lx waveform
Same as IDD1, Measuring of Lx waveform
Same as IDD1, Measuring of Lx waveform
Same as IDD1
Same as IDD1, Lx Oscillation start
Same as IDD1, Lx Oscillation stop
Same as IDD1, VCE=VOUT×0.95
Same as IDD1, VCE=0V
Same as IDD1, Apply output voltage to Lx,
Voltage required to produce FOSC×2
0.7
-
1.3
V
Efficiency
Slow-Start Time
EFFI
TSS
4.0
85
10.0
20.0
%
ms
NOTE: Unless otherwise stated, connect CE to VOUT, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit 2.
*1: The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0μA at reverse voltage (VR)=10.0V.(XC6372C)
*2: "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically
operates which results in less average power consumption. The current actually provided by an external VIN source is represented by
"No Load Input Current (IIN)".
*3: When PWM operates at PWM Mode.
*4: When PFM operates at PFM Mode.(XC6372C)
6/19
XC6371/XC6372/XC6373
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6371/72E501PR
PARAMETER
Output Voltage
Maximum Input Voltage
Operation Start Voltage
Oscillation Start Voltage
No Load Input Voltage
Supply Current 1
Supply Current 2
VOUT=5.0V, FOSC=100kHz
SYMBOL
CONDITIONS
VOUT
VIN
VST1
External Components Connected, IOUT=1mA
No external components,
VST2
Apply voltage to VOUT, Lx:10kΩpull-up to 5V
IIN
VIN=VOUT×0.8, IOUT=0mA(*1)
Same as VST2,
IDD1
Apply output voltage×0.95 to VOUT
Same as VST2,
IDD2
Apply output voltage×1.1 to VOUT
Ta=25℃
MAX.
UNITS
5.125
V
V
0.90
V
MIN.
4.875
10
-
TYP.
5.000
-
-
-
0.80
V
-
12.8
25.7
μA
-
80.2
133.8
μA
-
8.2
16.5
μA
Lx Switch-On
Resistance
Lx Leak Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (*4)
RSWON
Same as IDD1, VLX=0.4V
-
1.4
2.4
Ω
ILXL
FOSC
MAXDTY
PFMDTY
85
80
10
100
87
17
1.0
115
92
25
μA
kHZ
%
%
Lx Limit Voltage
VLxLMT
No external components, VOUT =VLX=10V
Same as IDD1, Measuring of Lx waveform
Same as IDD1, Measuring of Lx waveform
Same as IDD1, Measuring of Lx waveform
Same as IDD1, Apply output voltage to Lx,
Voltage required to produce FOSC×2
0.7
-
1.3
V
Efficiency
Slow-Start Time
EFFI
TSS
4.0
85
10.0
20.0
%
ms
NOTE: Unless otherwise stated, connect VDD to VOUT, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit 3.
*1: The Schottky diode (SD) must be type MA2Q735, with reverse current (IR)<1.0μA at reverse voltage (VR)=10.0V.(XC6372E)
*2: "Supply current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically
operates which results in less average power consumption. The current actually provided by external VIN source is represented by "No
Load Input Current (IIN)".
*3: When PWM operates at PWM Mode.
*4: When PFM operates at PFM Mode.(XC6372E)
*5: When the VDD and VOUT pins are independently used, the voltage range at the VDD pin should be 2.2V to 10V.
The IC operates from
VDD=0.8V. However, output voltage and oscillation frequency are properly stabilized when VDD=2.2V or higher.
7/19
XC6371/XC6372/XC6373 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6373A300PR
VOUT=3.0V, FOSC=30kHz
PARAMETER
Output Voltage
Maximum Input Voltage
SYMBOL
VOUT
VIN
Operation Start Voltage
VST1
Oscillation Start Voltage
VST2
Supply Current 1
IDD1
Supply Current 2
IDD2
Lx Switch-On Resistance
RSWON
Lx Leak Current
ILXL
Oscillation Frequency
Maximum Duty Ratio
Efficiency
Slow-Start Time
FOSC
MAXDTY
EFFI
TSS
CONDITIONS
Ta=25℃
MAX. UNITS
3.075
V
V
MIN.
2.925
10
TYP.
3.000
-
-
-
0.90
V
-
-
0.80
V
-
13.1
21.9
μA
-
3.9
7.9
μA
-
3.4
5.7
Ω
-
-
1.0
μA
24
80
4.0
30
87
77
10.0
36
92
20.0
kHZ
%
%
mS
MIN.
3.128
10
-
TYP.
3.300
-
MAX.
3.383
0.90
UNITS
V
V
V
-
-
0.80
V
-
14.1
23.5
μA
-
4.0
8.1
μA
-
3.4
5.7
Ω
-
-
1.0
μA
24
30
36
kHZ
80
87
92
%
4.0
77
10.0
20.0
%
mS
External Components Connected,
IOUT=1mA
No external components,
Apply voltage to VOUT, LX :10kΩpull-up to 5V
Same as VST2.
Apply output voltage×0.95 to VOUT
Same as VST2,
Apply output voltage×1.1 to VOUT
Same as IDD1, VLX=0.4V
No external components,
VOUT =VLX=10V
Same as IDD1, Measuring of Lx waveform
Same as IDD1, Measuring of Lx waveform
NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=15mA. See Typical Application Circuits, Circuit 1.
XC6373A330PR
VOUT=3.3V, FOSC=30kHz
PARAMETER
Output Voltage
Maximum Input Voltage
Operation Start Voltage
SYMBOL
VOUT
VIN
VST1
Oscillation Start Voltage
VST2
Supply Current 1
IDD1
Supply Current 2
IDD2
Lx Switch-On
Resistance
RSWON
Lx Leak Current
ILXL
Oscillation Frequency
FOSC
Maximum Duty Ratio
MAXDTY
Efficiency
Slow-Start Time
EFFI
TSS
Ta=25℃
CONDITIONS
External Components Connected, IOUT=1mA
No external components,
Apply voltage to VOUT, LX :10kΩpull-up to 5V
Same as VST2,
Apply output voltage×0.95 to VOUT
Same as VST2,
Apply output voltage×1.1 to VOUT
Same as IDD1. VLX=0.4V
No external components,
VOUT =VLX=10V
Same as IDD1,
Measuring of Lx waveform
Same as IDD1,
Measuring of Lx waveform
NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=16.5mA. See Typical Application Circuits, Circuit 1.
8/19
XC6371/XC6372/XC6373
Series
■TYPICAL APPRICATION CIRCUITS
Circuit 1: XC6372A series
LL :: 100μH
100μH (CR54,
(CR54,SUMIDA)
SUMIDA)
SD : MA2Q735 (Schottky Diode; MATUSHITA)
CL : 16V47μF (Tantalum Capacitor, NICHICHEMI MCE)
Circuit 2: XC6372C series
L : 100μH (CR54, SUMIDA)
SD : MA2Q735 (Schottky Diode; MATUSHITA)
CL : 16V 47μF (Tantalum Capacitor, NICHICHEMI MCE)
Circuit 3: XC6372E series
L : 100μH (CR54, SUMIDA)
SD : MA2Q735 (Schottky Diode; MATUSHITA)
CL : 16V 47μF (Tantalum Capacitor; NICHICHEMI MCE)
9/19
XC6371/XC6372/XC6373 Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
XC6371A501PR
1.2V
5.1
1.5V
Output Voltage:VOUT(V)
L=100μH(CR54),CL=47μF(Tantalum)
5.2
Output Voltage:VOUT(V)
XC6371A301PR
2.0V
VIN=0.9V
3.0V
5.0
4.0V
4.9
4.8
L=100μH(CR54),CL=47μF(Tantalum)
3.10
VIN=1.0V
3.05
2.7V
2.95
1
10
100
1000
0.1
VIN=0.9V
2.0V
3.0V
5.0
4.0V
4.9
4.8
0.1
1
10
100
Output Current:IOUT (mA)
1000
1000
XC6373A300PR
3.10
3.05
L=100μH(CR54),C
L=100μH(CR54),
VIN=0.9V
L =47μF(タンタル)
C
L=47μF
(Tantalum)
1.2V
3.00
1.5V
1.8V
2.7V
2.95
2.90
0.1
1
10
100
Output Current: IOUT(mA)
1000
Output Voltage:VOUT(V)
1.5V
1.2V
5.1
1 0
100
1000
XC6372A301PR
L=100μH
(CR54)
,
CL=47μF
(Tantalum)
5.2
1
Output Current:IOUT(mA)
XC6372A501PR
Output Voltage:VOUT(V)
1.8V
3.00
Output Current:IOUT(mA)
Output Voltage: VOUT (V)
1.5V
2.90
0.1
10/19
1.2V
L=100μH
(CR54)
,
CL=47μF
(Tantalum)
3.10
1.2V
3.05
VIN=0.9V
3.00
1.5V
1.8V
2.7V
2.95
2.90
0.1
1
10
100
Output Current:IOUT (mA)
1000
XC6371/XC6372/XC6373
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current
XC6371A501PR
XC6371A301PR
L=100μH(CR54),CL=47μF(Tantalum)
100
80
2.7V
80
3.0V
VIN=0.9V
2.0V
40
1.2V
1.5V
20
0
0.1
1
10
100
1000
1000
Output Current:IOUT(mA)
60
Efficiency:EFFI(%)
60
Efficiency:EFFI(%)
L=100μH(CR54),CL=47μF(Tantalum)
100
4.0V
VIN=0.9V
1.8 V
40
1.2V
1.5V
20
0
0.1
1
10
100
1000
1000
Output Current:IOUT(mA)
XC6373A300PR
Efficiency: EFFI (%)
100
L=100μH(CR54), CL=47μF
(Tantalum)
2.7V
80
60
40
1.8V
VIN=0.9V
1.2V
1.5V
20
0
0.1
1
10
100
Output Current: IOUT(mA)
1000
11/19
XC6371/XC6372/XC6373 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current
Ripple Voltage:Vr(mVp-p)
XC6371A301PR
XC6373A300PR
Ripple Voltage: Vr (mVp-p)
100
12/19
L=100μH(CR54), CL=47μF
(Tantalum)
80
1.8V
60
40
1.5V
1.2V
2.7V
VIN=0.9V
20
0
0.1
10
1
10
100
Output Current: IOUT(mA)
1000
100
L=100μH(CR54),CL=47μF(Tantalum)
80
60
1.8V
1.5V
40
20
0
0.1
1.2V
2.7V
VIN=0.9V
1
10
100
Output Current:IOUT (mA)
1000
XC6371/XC6372/XC6373
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) No Load Input Current vs. Input Voltage
XC6371A301PR
L=100μH
(CR54),CL=47μF
(Tantalum)
Input Current:IIN (μA)
500
400
300
200
100
0
0
1
2
3
Input Voltage:VIN (V)
XC6372A501PR
L=100μH
(CR54),CL=47μF
(Tantalum)
Input Current:IIN (μA)
200
150
100
50
0
0
1
2
3
4
5
Input Voltage:VIN (V)
13/19
XC6371/XC6372/XC6373 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(5) Operation Start Voltage / Hold Voltage vs. Output Current
(6) Load Transient Response
14/19
XC6371/XC6372/XC6373
Series
■PACKAGING INFORMATION
●SOT-89
●SOT-89-5
●USP-6B
15/19
XC6371/XC6372/XC6373 Series
■PACKAGING INFORMATION (Continued)
●USP-6B Recommended Pattern Layout
●USP-6B Recommended Metal Mask Design
■MARKING RULE
[XC6371/72]
●SOT-89, SOT-89-5
②
④
①
③
① Represents product series
MARK
A
A
S
PRODUCT SERIES
XC6371A
XC6371C
XC6371E
2
SOT-89
(TOP VIEW)
PRODUCT SERIES
XC6372A
XC6372C
XC6372E
② Represents integer of output voltage and oscillation frequency
OUTPUT VOLTAGE (V)
1
MARK
1
1
3
3
1.x
2.x
3.x
4.x
5.x
6.x
7.x
50kHz
B
C
F
E
F
H
K
OSCILLATION FREQUENCY
100kHz
180kHz
1
1
2
2
3
3
4
4
5
5
6
6
7
7
③ Represents decimal number of output voltage and oscillation frequency
OUTPUT VOLTAGE (V)
SOT-89-5
(TOP VIEW)
x.0
x.1
x.2
x.3
x.4
x.5
x.6
x.7
x.8
x.9
50kHz
0
1
2
3
4
5
6
7
8
9
OSCILLATION FREQUENCY
100kHz
180kHz
0
A
1
B
2
C
3
D
4
E
5
F
6
H
7
K
8
L
9
M
④ Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted).
16/19
XC6371/XC6372/XC6373
Series
■MARKING RULE (Continued)
[XC6371/72] (Continued)
●USP-6B
① Represents product series
MARK
5
PRODUCT SERIES
XC6371xxxxDx
2
XC6372xxxxDx
② Represents product classification
MARK
A
USP-6B
(TOP VIEW)
C
PRODUCT SERIES
XC6371A
XC6371C
E
XC6371E
③④ Represents output voltage (ex.)
MARK
OUTPUT VOLTAGE (V)
③
④
3
3
3.3
5
0
5.0
⑤ Represents oscillation frequency
MARK
0
OSCILLATION FREQUENCY (kHz)
50
1
100
2
180
⑥ Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
Note: No character inversion used.
17/19
XC6371/XC6372/XC6373 Series
■MARKING RULE (Continued)
〔XC6373〕
●SOT-89,SOT-89-5
②
④
①
③
① Represents product series
MARK
A
A
S
FUNCTION
Built-in Transistor
CE
Built-in Transistor
Separated VDD and VOUT Built-in Transistor
② Represents integer of output voltage and oscillation frequency
OUTPUT VOLTAGE (V)
1
2
SOT-89
(TOP VIEW)
PRODUCT SERIES
XC6372AxxxPx
XC6372CxxxPx
XC6372ExxxPx
3
1.x
2.x
3.x
4.x
5.x
6.x
7.x
OSCILLATION FREQUENCY (PRODUCT SERIES)
30kHz (XC6373xxx0Px)
B
C
F
E
F
H
K
③ Represents decimal number of output voltage and oscillation frequency
OUTPUT VOLTAGE (V)
SOT-89-5
(TOP VIEW)
x.0
x.1
x.2
x.3
x.4
x.5
x.6
x.7
x.8
x.9
OSCILLATION FREQUENCY (PRODUCT SERIES)
30kHz (XC6373xxx0Px)
0
1
2
3
4
5
6
7
8
9
④ Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted).
18/19
XC6371/XC6372/XC6373
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 catalog 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 catalog.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this catalog.
4. The products in this catalog 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 catalog 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 catalog may be copied or reproduced without the
prior permission of Torex Semiconductor Ltd.
19/19