☆GO-Compatible
◆Input Voltage Range : 0.9~10.0V
◆Output Voltage Range : 1.5~6.5V(±2.5%)
◆Oscillator Frequency : 300kHz(±15%)
◆PWM/PFM Switching Control (XC6368)
◆High Efficiency
: 84% (TYP.)
◆SOT-25 Package
■APPLICATIONS
■GENERAL DESCRIPTION
■FEATURES
The XC6367/68 series are multi-functional step-up DC/DC
converter controllers with built-in high speed, low ON resistance
drivers.
Large output currents are possible using an externally
connected transistor, coil, diode and capacitor.
Output voltage is selectable in 100mV increments within a
range of 1.5V ~ 6.5V (±2.5%). For output voltages outside this
range, we recommend FB version, which has a 1.0V internal
reference voltage. Using the FB version, the required output
voltage can be set-up using 2 external resistors.
With a 300kHz oscillation frequency, the size of the external
components can be reduced.
Control switches from PWM to PFM during light loads with the
XC6368 (PWM/PFM switchable) and the series is highly
efficient from light loads to large output currents.
Soft start time of XC6367/68A, B, and C series is internally set
to 10msec and XC6367/68C, D, and F series regulate soft-start
time by connecting resistors and capacitors externally.
During stand-by (CE pin "Low"), supply current is reduced to
less than 0.5μA.
Input Voltage Range
■TYPICAL APPLICATION CIRCUIT
XC6367_6368 ETR0401_001.doc
●Electronic information organizers
●Palmtops
●Cellular and portable phones
●Portable audio systems
●Various multi-function power supplies
: 0.9V ~ 10V
Operating Voltage Range : 2.0V ~ 10V
Output voltage Range : 1.5V ~ 6.5V programmable in
100mV increments (±2.5%)
Oscillation Frequency
: 300kHz, 100kHz (±15%)
Custom products for
180kHz, 500kHz
Output Current
: More than 200mA
(VIN=1.8V, VOUT=3.3V)
High Efficiency
: 84% (TYP.)
Stand-by capability
: ISTB=0.5μA (MAX.)
Selection
: Soft-start set-up external
Output voltage set-up internal(VOUT)
Output voltage set-up external(FB)
Package
: SOT-25
■ TYPICAL PERFORMANCE
CHARACTERISTICS
553
XC6367/6368 Series
■PIN CONFIGURATION
（
）
■PIN ASSIGNMENT
PIN NUMBER
XC6367/XC6368
PIN NAME
FUNCTION
A, B, C, D
E, F
5
5
EXT
: External Transistor Connection
2
-
VDD
: Supply Voltage Input
4
4
GND
: Ground
3
1
CE
1
2
VOUT
(FB)
: Chip Enable
(C, D, F Types: Soft Start External Set-Up,
Soft Start Capacitor Connected)
: Output Voltage Monitor
(E, F Types: Output Voltage Monitor, Power Supply)
(B, D Types: Output Voltage External Set-up)
■PRODUCT CLASSIFICATION
●Selection Guide
START
Soft-Start Internally Set-Up
Output Voltage Internally Set-Up (VOUT)
VOUT=VDD pin
Output Voltage Externally Set-Up (FB)
XC6367A,XC6368A
XC6367E,XC6368E
XC6367B,XC6368B
Soft-Start Externally Set-Up
Output Voltage Internally Set-Up (VOUT)
VOUT=VDD pin
Output Voltage Externally Set-Up (FB)
554
XC6367C,XC6368C
XC6367F,XC6368F
XC6367D,XC6368D
XC6367/6368
Series
■PRODUCT CLASSIFICATION (Continued)
●Ordering Information
XC6367①②③④⑤⑥
XC6368①②③④⑤⑥
PWM Control
PWM/PFM Switching Control
DESCRIPTION
DESIGNATOR
Type of DC/DC Converter
①
DESCRIPTION
SYMBOL
A
: VOUT type: VOUT internally set-up, Soft-start internally set-up
B
: FB type: VOUT externally set-up, Soft-start internally set-up
C
: VOUT type: VOUT internally set-up, Soft-start externally set-up
D
: FB type: VOUT externally set-up, Soft-start externally set-up
E
: VOUT type: VOUT internally set-up, Soft-start internally set-up
F
: VOUT type: VOUT internally set-up, Soft-start externally set-up
15 ~ 65
: VOUT type: 3.0V output → ②=3, ③=0
Output Voltage
② ③
10
: FB type (B, D types): 10 fixed → ②=1, ③=0 fixed
3
: 300kHz
1
: 100kHz
2
: 180kHz (Custom)
5
: 500kHz (Custom)
M
: SOT-25 (SOT-23-5)
R
: Embossed tape, standard feed
L
: Embossed tape, reverse feed
Oscillation Frequency
④
Package
⑤
Device Orientation
⑥
■PACKAGING INFORMATION
●SOT-25
+0.1
0.15 -0.05
0.4
+0.1
-0.05
+0.2
min 0.2
1.6 -0.1
2.8±0.2
0～0.1
（0.95）
1.9±0.2
1.1±0.1
2.9±0.2
555
XC6367/6368 Series
■MARKING RULE
●XC6367/6368 Series
①Represents product series
SOT-25
MARK
PRODUCT SERIES
MARK
PRODUCT SERIES
A
B
C
D
E
F
XC6367A
XC6367B
XC6367C
XC6367D
XC6367E
XC6367F
K
L
M
N
P
R
XC6368A
XC6368B
XC6368C
XC6368D
XC6368E
XC6368F
(TOP VIEW)
②Represents integer of output voltage and oscillation frequency
OUTPUT VOLTAGE (V)
1
2
3
4
5
6
FOR CUSTOM PRODUCT
100
OSCILLATION FREQUENCY (kHz)
180
300
B
C
D
E
F
H
1
2
3
4
5
6
1
2
3
4
5
6
500
B
C
D
E
F
H
S
③Represents decimal number of output voltage and oscillation frequency
OUTPUT VOLTAGE (V)
0
1
2
3
4
5
6
7
8
9
100
OSCILLATION FREQUENCY (kHz)
180
300
0
1
2
3
4
5
6
7
8
9
④Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
556
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
XC6367/6368
Series
■BLOCK DIAGRAMS
XC6367, XC6368 Series A, C, E, F types (VOUT )
Phase
Compensation
VOUT
VDD
Error Amp.
PWM
Comparator
+
+
Buffer,
Driver
-
CE
Vre with
Soft Start,
CE
Ramp Wave
Generator,
OSC
PWM/PFM
Controller
EXT
GND
Note : Connecting VOUT and VDD internally with E F types.
XC6367, XC6368 Series B,D types (FB)
Phase
Compensation
Error Amp.
FB
VDD
PWM
Comparator
+
+
Buffer,
Driver
-
CE
Vref with
Soft Start,
CE
PWM/PFM
Controller
Ramp Wave
Generator,
OSC
EXT
GND
557
XC6367/6368 Series
■ABSOLUTE MAXIMUM RATINGS
PARAMETER
VDD Pin Voltage
VOUT Pin Voltage
FB Pin Voltage
CE Pin Voltage
EXT Pin Voltage
EXT Pin Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
VDD
VOUT
VFB
VCE
VEXT
IEXT
Pd
Topr
Tstg
Ta = 25℃
UNITS
V
V
V
V
V
mA
mW
℃
℃
RATINGS
-0.3 ~ +12.0
-0.3 ~ +12.0
-0.3 ~ +12.0
-0.3 ~ +12.0
-0.3 ~ VDD+0.3
±100
150
-30 ~ +80
-40 ~ +125
*Voltage is all ground standardized.
■ELECTRICAL CHARACTERISTICS
VOUT=3.3V, FOSC=300kHz, Ta=25℃
XC6367A333MR, XC6368A333MR
PARAMETER
Output Voltage
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillator Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
CE "Low" Voltage
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
Soft-Start Time
SYMBOL
VOUT
VDD
VIN
VST1
VST2
VHLD
IDD1
IDD2
ISTB
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
REXTH
REXTL
EFFI
TSS
CONDITIONS
Tr: 2SD1628, IOUT=1.0mA
VOUT=CE: Apply voltage
Tr: Use of a 2SX1628, IOUT=1.0mA
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
Same as IDD1
IOUT=0mA
VOUT=setting output voltage x0.95
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
MIN.
3.218
2.0
10.0
255
78
15
0.65
5
Conditions: Unless otherwise stated, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=130mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
558
TYP.
3.300
130
20
300
85
25
29
19
84
10
MAX.
3.383
10.0
0.9
0.8
0.7
200
35
0.5
345
92
35
0.20
43
27
20
UNITS
V
V
V
V
V
V
μA
μA
μA
kHz
%
%
V
V
Ω
Ω
%
msec
XC6367/6368
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367A503MR, XC6368A503MR
PARAMETER
Output Voltage
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
CE "Low" Voltage
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
SYMBOL
VOUT
VDD
VIN
VST1
VST2
VHLD
IDD1
IDD2
ISTB
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
REXTH
REXTL
EFFI
Soft-Start Time
TSS
VOUT=5.0V, FOSC=300kHz,Ta=25℃
CONDITIONS
Tr: 2SD1628, IOUT=1.0mA
VOUT=CE : Apply voltage
Tr: 2SD1628, IOUT=1.0mA
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
Same as IDD1
IOUT=0mA
VOUT=setting output voltage x0.95
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
Connect RSS and CSS,
CE:0V→3.0V
(XC6367C/F and XC6368C/F series)
MIN.
4875
2.0
10.0
255
78
15
0.65
-
TYP.
5.000
180
22
300
85
25
20
13
87
MAX.
5.125
10.0
0.9
0.8
0.7
280
38
0.5
345
92
35
0.20
29
19
-
UNITS
V
V
V
V
V
V
μA
μA
μA
kHz
%
%
V
V
Ω
Ω
%
5
10
20
msec
Conditions: Unless otherwise specified, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=200mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
* 4: The values of supply voltage and NOTE *1 do not apply to XC6367E/F and XC6368E/F series. For XC6367E/F and
XC6368E/F series, output voltage less than 2.0V cannot be set-up.
559
XC6367/6368 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367B103MR, XC6368B103MR
PARAMETER
Output Voltage
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
CE "Low" Voltage
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
SYMBOL
VOUT
VDD
VIN
VST1
VST2
VHLD
IDD1
IDD2
ISTB
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
REXTH
REXTL
EFFI
Soft-Start Time
TSS
CONDITIONS
Tr: 2SD1628, IOUT=1.0mA
VDD=CE: Apply voltage, FB=0V
Tr: 2SD1628, IOUT=1.0mA
VDD=CE=2.85V,FB=0V
VDD=CE=3.5V,FB=1.2V
VDD=2.85V, CE=0V, FB=0V
Same as IDD1
Same as IDD1
IOUT=0mA
VDD=2.85V,FB=0V
VDD=2.85V,FB=0V
Same as IDD1, VEXT=VDD-0.4V
Same as IDD1, VEXT=0.4V
VOUT=3.0V , FOSC=300kHz, Ta=25℃
MIN.
TYP.
MAX. UNITS
2.925 3.000 3.075
V
2.0
10.0
V
10.0
V
0.9
V
0.8
V
0.7
V
120
190
μA
20
34
μA
0.5
μA
255
300
345
kHz
78
85
92
%
15
25
35
%
0.65
V
0.20
V
32
47
Ω
20
30
Ω
84
%
Connect RSS and CSS,
CE:0V→3.0V (XC6367D/68D series)
5
Conditions: Unless otherwise stated, VIN=1.8V, IOUT=120mA
External components : RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 47pF
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
560
10
20
msec
XC6367/6368
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367A331MR, XC6368A331MR
PARAMETER
Output Voltage
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
CE "Low" Voltage
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
Soft-Start Time
SYMBOL
VOUT
VDD
VIN
VST1
VST2
VHLD
IDD1
IDD2
ISTB
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
REXTH
REXTL
EFFI
TSS
VOUT=3.3V, FOSC=100kHz, Ta=25℃
CONDITIONS
Tr: 2SD1628, IOUT=1.0mA
VOUT=CE: Apply voltage
Tr: 2SD1628, IOUT=1.0mA
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
Same as IDD1
IOUT=0mA
VOUT=setting output voltage x0.95
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
MIN.
3.218
2.0
10.0
85
78
15
0.65
5
TYP.
3.300
50
11
100
85
25
29
19
84
10
MAX.
3.383
10.0
0.9
0.8
0.7
100
20
0.5
115
92
35
0.20
43
27
20
UNITS
V
V
V
V
V
V
μA
μA
μA
kHz
%
%
V
V
Ω
Ω
%
msec
Conditions: Unless otherwise stated, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=130mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
561
XC6367/6368 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367A501MR, XC6368A501MR
PARAMETER
Output Voltage
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (* 3)
CE "High" Voltage
CE "Low" Voltage
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
Soft-Start Time
SYMBOL
VOUT
VDD
VIN
VST1
VST2
VHLD
IDD1
IDD2
ISTB
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
REXTH
REXTL
EFFI
TSS
VOUT=5.0V, FOSC=100kHz, Ta=25℃
CONDITIONS
Tr: 2SD1628, IOUT=1.0mA
VOUT=CE: Apply voltage
Tr: 2SX1628, IOUT=1.0mA
VOUT=CE=setting output voltage x 0.95
VOUT=CE=setting output voltage + 0.5V
VOUT=setting output voltage x 0.95, CE=0V
Same as IDD1
Same as IDD1
IOUT=0mA
VOUT=setting output voltage x0.95
VOUT=setting output voltage x0.95
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
MIN.
4875
2.0
10.0
85
78
15
0.65
5
Conditions: Unless otherwise stated, connect VDD to VOUT; VIN=setting output voltage x 0.6, IOUT=200mA
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
562
TYP.
5.000
70
11
100
85
25
20
13
87
10
MAX.
5.125
10.0
0.9
0.8
0.7
120
22
0.5
115
92
35
0.20
29
19
20
UNITS
V
V
V
V
V
V
μA
μA
μA
kHz
%
%
V
V
Ω
Ω
%
msec
XC6367/6368
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6367B101MR, XC6368B101MR
PARAMETER
Output Voltage
Supply Voltage (* 1)
Maximum Input Voltage
Oscillation Start Voltage 1
Oscillation Start Voltage 2
Oscillation Hold Voltage
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio (*3)
CE "High" Voltage
CE "Low" Voltage
EXT "High" ON Resistance
EXT "Low" ON Resistance
Efficiency (* 2)
Soft-Start Time
SYMBOL
VOUT
VDD
VIN
VST1
VST2
VHLD
IDD1
IDD2
ISTB
FOSC
MAXDTY
PFMDTY
VCEH
VCEL
REXTH
REXTL
EFFI
TSS
VOUT=3.0V, FOSC=100kHz, Ta=25℃
CONDITIONS
Tr: 2SD1628, IOUT=1.0mA
VDD=CE: Apply voltage, FB=0V
Tr: 2SD1628, IOUT=1.0mA
VDD=CE=2.85V, FB=0V
VDD=CE=3.5V, FB=1.2V
VDD=2.85V, CE=0V, FB=0V
Same as IDD1
Same as IDD1
IOUT=0mA
VDD =2.85V,FB=0V
VDD =2.85V,FB=0V
Same as IDD1, VEXT=VDD-0.4V
Same as IDD1, VEXT=0.4V
MIN.
2.925
2.0
10.0
85
78
15
0.65
5
TYP.
3.000
50
11
100
85
25
32
20
84
10
MAX.
3.075
10.0
0.9
0.8
0.7
90
20
0.5
115
92
35
0.20
47
30
20
UNITS
V
V
V
V
V
V
μA
μA
μA
kHz
%
%
V
V
Ω
Ω
%
msec
Conditions: Unless otherwise stated, VIN=1.8V, IOUT=120mA
External components : RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 47pF
NOTE:
* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.
Oscillation will occur with a value of VDD = 0.8V or more, but with a value of VDD = 2.0V or more,
output voltage and oscillation frequency will be stable.
* 2: EFFI = {[(output voltage) x (output current)]÷[(input voltage) x (input current)] x 100
* 3: Applies to the XC6368 series only (duty ratio when control changes to PFM).
563
XC6367/6368 Series
■TEST CIRCUITS
564
XC6367/6368
Series
■TEST CIRCUITS (Continued)
565
XC6367/6368 Series
■TEST CIRCUITS (Continued)
566
XC6367/6368
Series
■TEST CIRCUITS (Continued)
567
XC6367/6368 Series
■TEST CIRCUITS (Continued)
●External Components
Tr
L
SD
CIN
CL
: XP161A1355PR (N-ch Power MOSFET, TOREX)
As the breakdown voltage of XP161A1355PR is 8V, take care
with the power supply voltage. With output voltages over 6V,
use the XP161A1265PR with a breakdown voltage of 12V.
VST1 : XP161A1355PR = 1.2V (MAX.)
XP161A1265PR = 1.5V (MAX.)
: 22μH (CR54, SUMIDA FOSC=300kHz)
47μH (CR75, SUMIDA FOSC=100, 180kHz)
10μH (CR54, SUMIDA FOSC=500kHz)
: MA2Q735 (Schottky Diode, SUMIDA MATSUSHITA)
: 16V, 220μF (Aluminium Electrolytic Capacitor)
: 16V, 47μF + 47μF (Tantalum capacitor, NICHICON MCE)
NPN Tr type:
Tr
Rb
Cb
: 2SD1628 (SANYO)
: 500Ω(Adjust according to load and Tr. hFE levels)
: 2200pF (Ceramic Type)
Set up so that CB < 1÷(2πx RB x FOSC x 0.7)
C, D, F type (soft-start externally set-up):
CSS
RSS
: 0.1μF (Ceramic Capacitor)
: 470kΩ(C, F Type), 220kΩ(D Type)
B, D type (FB versions)
RFB
CFB
e.g
: Set up so that RFB1÷RFB2 = VOUT - 1 (VOUT = setting output voltage),
Please use with RFB1 + RFB2 ≦2MΩ
: Set up so that fzfb = 1÷(2 xπx CFB x RFB1) is within the
0.1 to 20kHz range (10kHz conventional)
Adjustments necessary in respect of L, CL.
VOUT = 3.0V
RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 47pF
For using MOSFET, We recommend using TOREX MOSFETs, which has a gate protection diode built-in.
GATE PROTECTION DIODE BUILT-IN MOSFET
XP161A1355PR
XP161A1265PR
568
Rds (ON)
0.15Ω@ Vgs=1.5V
0.095Ω@ Vgs=2.5V
XC6367/6368
Series
■NOTES ON USE
1. Take ample care to ensure that none of the IC's, nor the external component's, absolute maximum ratings are
exceeded.
2. Be extremely careful when selecting parts and do not limit your reference to the specifications and characteristics for
the DC/DC converter alone. The IC also depends, to a great extent, upon the external components.
3. Arrange the peripherals in the environs of the IC. In order to reduce wiring impedance, use short, thick wires. In
particular, wire the load capacitor as close as possible and strengthen the ground wiring sufficiently.
4. Ground current during switching may cause the IC's operations to become unstable due to changes in ground voltage,
so please strengthen the IC's GND pin surroundings.
●External Components
1.Setting soft-start time
In oder to lengthen soft-start time we recommend that you use the C or D types of the series which have soft start
time externally set-up.
Soft-start time (TSS) is between MIN & MAX, as indicated in the graphs below, so please select soft-start capacitor
value (CSS) to suit your application.
2. RFB1, CFB set up
fzfb = 1 ÷ ( 2πx CFB x RFB1 )
In order to achieve a value for fzfb within the range of 0.1kHz to 20kHz, we recommend that values for RFB1 & CFB
are selected from the area indicated within the lines of fzfb = 0.1kHz and fzfb = 20 kHz as shown on the graph
below. Please select combinations of values as close to the fzfb = 10kHz line as possible.
569
XC6367/6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
570
XC6367/6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued)
571
XC6367/6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current
572
XC6367/6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current (Continued)
573
XC6367/6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current
574
XC6367/6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued)
575
XC6367/6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) Output Voltage vs. Ambient Temperature
(5) Supply Current 1 vs. Ambient Temperature
(6) Supply Current 2 vs. Ambient Temperature
(7) Stand-by Current vs. Ambient Temperature
(8) EXT "H" On Resistance vs. Ambient Temperature
(9) EXT "L" On Resistance vs. Ambient Temperature
576
XC6367/6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(10) Oscillation Frequency vs. Ambient Temperature
(11) Maximum Duty Ratio vs. Ambient Temperature
(12) PFM Duty Ratio vs. Ambient Temperature
(13) Efficiency vs. Ambient Temperature
(14) Operation Start Voltage vs. Ambient Temperature
(15) Operation Hold Voltage vs. Ambient Temperature
577
XC6367/6368 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Oscillation Start Voltage vs. Ambient Temperature
(17) Soft-Start Time vs. Ambient Temperature
(18) CE "L" Voltage vs. Ambient Temperature
(19) CE "H" Voltage vs. Ambient Temperature
578
XC6367/6368
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(20) Load Transient Response
579