XC6368C301MR资料

◆Input Voltage Range : 0.9~10.0V

◆Output Voltage Range : 1.5~6.5V(±2.5%)

☆GO-Compatible

■APPLICATIONS

●Electronic information organizers ●Palmtops

●Cellular and portable phones ●Portable audio systems

=●Various multi-function power supplies

◆Oscillator Frequency : 300kHz(±15%)

◆PWM/PFM Switching Control (XC6368) ◆High Efficiency : 84% (TYP.) ◆SOT-25 Package

■GENERAL DESCRIPTION ■FEATURES

Input Voltage Range

: 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 High Efficiency Selection

: More than 200mA (VIN=1.8V, VOUT=3.3V) : 84% (TYP.)

: Soft-start set-up external

Output voltage set-up internal(VOUT)Output voltage set-up external(FB) : SOT-25

Stand-by capability : ISTB0.5μA (MAX.)

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-startPackage

time by connecting resistors and capacitors externally.

During stand-by (CE pin \"Low\"), supply current is reduced to

less than 0.5μA.

■TYPICAL APPLICATION CIRCUIT

■ TYPICAL PERFORMANCE

CHARACTERISTICS

XC6367_6368 ETR0401_001.doc

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XC6367/6368 Series

（

）

■PIN CONFIGURATION

■PIN ASSIGNMENT

PIN NUMBER XC6367/XC6368 A, B, C, D 5

E, F 5

EXT

: External Transistor Connection : Supply Voltage Input

PIN NAME

FUNCTION

2 - VDD

4 4 GND : Ground

: Chip Enable

(C, D, F Types: Soft Start External Set-Up, 3 1 CE Soft Start Capacitor Connected) VOUT

1 2 (FB)

: Output Voltage Monitor

(E, F Types: Output Voltage Monitor, Power Supply) (B, D Types: Output Voltage External Set-up)

■PRODUCT CLASSIFICATION

●Selection Guide

STARTSoft-Start Internally Set-UpOutput Voltage Internally Set-Up (VOUT)VOUT=VDD pinXC6367A,XC6368AXC6367E,XC6368EXC6367B,XC6368BOutput Voltage Externally Set-Up (FB)Soft-Start Externally Set-UpOutput Voltage Internally Set-Up (VOUT)VOUT=VDD pinXC6367C,XC6368CXC6367F,XC6368FXC6367D,XC6368DOutput Voltage Externally Set-Up (FB)5

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XC6367/6368

Series

■PRODUCT CLASSIFICATION(Continued)

●Ordering Information

XC6367①②③④⑤⑥ PWM Control

XC6368①②③④⑤⑥ PWM/PFM Switching Control DESIGNATOR

DESCRIPTION

SYMBOL

B

①

Type of DC/DC Converter D

DESCRIPTION

: FB type: VOUT externally set-up, Soft-start internally set-up : FB type: VOUT externally set-up, Soft-start externally set-up

A : VOUT type: VOUT internally set-up, Soft-start internally set-up C : VOUT type: VOUT internally 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

② ③

Output Voltage

10

: FB type (B, D types): 10 fixed → ②=1, ③=0 fixed : VOUT type: 3.0V output → ②=3, ③=0

3 : 300kHz

④

Oscillation Frequency

1 : 100kHz 2 5

⑤ ⑥

: 180kHz (Custom) : 500kHz (Custom) : SOT-25 (SOT-23-5)

: Embossed tape, standard feed : Embossed tape, reverse feed

Package Device Orientation

M R L

■PACKAGING INFORMATION

●SOT-25 0.15-0.050.4-0.05+0.1+0.10～0.11.6-0.1+0.2

2.8±0.2（0.95）1.9±0.22.9±0.21.1±0.1min 0.2555

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XC6367/6368 Series

■MARKING RULE

●XC6367/6368 Series

SOT-25 (TOP VIEW)

①Represents product series

MARK

PRODUCT SERIES

MARK

PRODUCT SERIES

A XC6367A K XC6368A B XC6367B L XC6368B C XC6367C M XC6368C D XC6367D N XC6368D E XC6367E P XC6368E F XC6367F R XC6368F ②Represents integer of output voltage and oscillation frequency

OUTPUT VOLTAGE (V)

100

OSCILLATION FREQUENCY (kHz)

180 300

500

1 B 1 1 B 2 C 2 2 C 3 D 3 3 D 4 E 4 4 E 5 F 5 5 F 6 H 6 6 H FOR CUSTOM PRODUCTS ③Represents decimal number of output voltage and oscillation frequency OUTPUT VOLTAGE (V)

100

OSCILLATION FREQUENCY (kHz)

180 300

500

0 0 0 A A 1 1 1 B B 2 2 2 C C 3 3 3 D D 4 4 4 E E 5 5 5 F F 6 6 6 H H 7 7 7 K K 8 8 8 L L 9 9 9 M M ④Represents production lot number

0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)

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Series

CEVref withSoft Start,CEPWM/PFMControllerRamp WaveGenerator,OSC--FBError Amp.+PWMComparator+Buffer,DriverEXTPhaseCompensationCEVrewithSoftStart,CEPWM/PFMControllerRampWaveGenerator,OSCGND--ErrorAmp.+VOUTPhaseCompensationPWMComparator+Buffer,DriverEXTVDD■BLOCK DIAGRAMS

XC6367, XC6368 Series A, C, E,F types (VOUT)Note :ConnectingVOUTandVDDinternallywithEF types.XC6367, XC6368 Series B,D types (FB)VDDGND GND557

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XC6367/6368 Series

■ABSOLUTE MAXIMUM RATINGS

Ta = 25℃

PARAMETER SYMBOL RATINGS UNITS VDD Pin Voltage VDD -0.3 ~ +12.0 V VOUT Pin Voltage VOUT -0.3 ~ +12.0 V FB Pin Voltage VFB -0.3 ~ +12.0 V

CE Pin Voltage VCE -0.3 ~ +12.0 V

= EXT Pin Voltage VEXT -0.3 ~ VDD+0.3 V EXT Pin Current IEXT mA ±100

Power Dissipation Pd 150 mW = Operating Temperature Range Topr -30 ~ +80 ℃

Storage Temperature Range Tstg -40 ~ +125 ℃

*Voltage is all ground standardized.

=

=

■ELECTRICAL CHARACTERISTICS

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

VOUT=3.3V, FOSC=300kHz, Ta=25℃

SYMBOL CONDITIONS MIN. TYP. MAX.UNITSVOUT 3.218 3.300 3.383V VDD 2.0 - 10.0V VIN 10.0 - - V VST1 Tr: 2SD1628, IOUT1.0mA - - 0.9 V VST2 VOUT=CE: Apply voltage - - 0.8 V VHLD Tr: Use of a 2SX1628, IOUT1.0mA - - 0.7 V IDD1 VOUT=CE=setting output voltage x 0.95 - 130 200 μA IDD2 VOUT=CE=setting output voltage + 0.5V - 20 35 μA ISTB VOUT=setting output voltage x 0.95, CE=0V- - 0.5 μA FOSC Same as IDD1 255 300 345 kHz MAXDTY Same as IDD1 78 85 92 % PFMDTY IOUT0mA 15 25 35 % VCEH VOUT=setting output voltage x0.95 0.65 - - V VCEL VOUT=setting output voltage x0.95 - - 0.20V REXTH Same as IDD1, VEXT=VOUT-0.4V - 29 43 Ω REXTL Same as IDD1, VEXT0.4V - 19 27 Ω EFFI - 84 - % TSS 5 10 20 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).

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XC6367/6368

Series

■ELECTRICAL CHARACTERISTICS (Continued)

XC6367A503MR, XC6368A503MR

VOUT=5.0V, FOSC=300kHz,Ta=25℃

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX.UNITS

Output Voltage VOUT 4875 5.000 5.125V Supply Voltage (* 1) VDD 2.0 - 10.0V Maximum Input Voltage VIN 10.0 - - V Oscillation Start Voltage 1 VST1 Tr: 2SD1628, IOUT1.0mA - - 0.9 V Oscillation Start Voltage 2 VST2 VOUT=CE : Apply voltage - - 0.8 V Oscillation Hold Voltage VHLD Tr: 2SD1628, IOUT1.0mA - - 0.7 V Supply Current 1 IDD1 VOUT=CE=setting output voltage x 0.95 - 180 280 μA Supply Current 2 IDD2 VOUT=CE=setting output voltage + 0.5V - 22 38 μA Stand-by Current ISTB VOUT=setting output voltage x 0.95, CE=0V- - 0.5 μA Oscillation Frequency FOSC Same as IDD1 255 300 345 kHz Maximum Duty Ratio MAXDTY Same as IDD1 78 85 92 % PFM Duty Ratio (* 3) PFMDTY IOUT0mA 15 25 35 % CE \"High\" Voltage VCEH VOUT=setting output voltage x0.95 0.65 - - V CE \"Low\" Voltage VCEL VOUT=setting output voltage x0.95 - - 0.20V EXT \"High\" ON Resistance REXTH =Same as IDD1, VEXT=VOUT-0.4V - 20 29 Ω EXT \"Low\" ON Resistance REXTL Same as IDD1, VEXT0.4V - 13 19 Ω

Efficiency (* 2) EFFI - 87 - %

=Connect RSS and CSS, Soft-Start Time TSS 5 10 20 msecCE:0V→3.0V

(XC6367C/F and XC6368C/F series)

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.

= 0.8V or more, but with a value of VDD = 2.0V or more, Oscillation will occur with a value of VDD=

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.

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XC6367/6368 Series

■ELECTRICAL CHARACTERISTICS (Continued)

XC6367B103MR, XC6368B103MR

VOUT=3.0V , FOSC=300kHz, Ta=25℃

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX.UNITSOutput Voltage VOUT 2.925 3.000 3.075V Supply Voltage (* 1) VDD 2.0 - 10.0V Maximum Input Voltage VIN 10.0 - - V Oscillation Start Voltage 1 VST1 Tr: 2SD1628, IOUT1.0mA - - 0.9 V Oscillation Start Voltage 2 VST2 VDD=CE: Apply voltage, FB=0V - - 0.8 V Oscillation Hold Voltage VHLD Tr: 2SD1628, IOUT1.0mA - - 0.7 V Supply Current 1 IDD1 VDDCE2.85V,FB0V - 120 190 μA Supply Current 2 IDD2 VDDCE3.5V,FB1.2V - 20 34 μA Stand-by Current ISTB VDD=2.85V, CE=0V, FB=0V - - 0.5 μA Oscillation Frequency FOSC Same as IDD1 255 300 345 kHz Maximum Duty Ratio MAXDTY Same as IDD1 78 85 92 % PFM Duty Ratio (* 3) PFMDTY IOUT0mA 15 25 35 % CE \"High\" Voltage VCEH VDD2.85V,FB0V 0.65 - - V CE \"Low\" Voltage VCEL VDD2.85V,FB0V - - 0.20V EXT \"High\" ON Resistance REXTH Same as IDD1, VEXT=VDD-0.4V - 32 47 Ω =EXT \"Low\" ON Resistance REXTL Same as IDD1, VEXT0.4V - 20 30 Ω

==Efficiency (* 2) EFFI = - 84 - % ==Connect RSS and CSS,

Soft-Start Time TSS 5 10 20 msec CE:0V→3.0V (XC6367D/68D series)

Conditions: Unless otherwise stated, VIN=1.8V, IOUT=120mA ===

===Ω, RFB2 = 200kΩ, CFB = 47pF External components : RFB1 = 400k

=NOTE:

* 1: When taking VDD from another power source please ensure that VDD = 2.0V or more.

=DD = 2.0V or more, Oscillation will occur with a value of VDD = 0.8V or more, but with a value of V

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).

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XC6367/6368

Series

■ELECTRICAL CHARACTERISTICS (Continued)

XC6367A331MR, XC6368A331MR

VOUT=3.3V, FOSC=100kHz, Ta=25℃

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX.UNITS

Output Voltage VOUT 3.218 3.300 3.383V Supply Voltage (* 1) VDD 2.0 - 10.0V Maximum Input Voltage VIN 10.0 - - V Oscillation Start Voltage 1 VST1 Tr: 2SD1628, IOUT1.0mA - - 0.9 V Oscillation Start Voltage 2 VST2 VOUT=CE: Apply voltage - - 0.8 V Oscillation Hold Voltage VHLD Tr: 2SD1628, IOUT1.0mA - - 0.7 V Supply Current 1 IDD1 VOUT=CE=setting output voltage x 0.95 - 50 100 μA Supply Current 2 IDD2 VOUT=CE=setting output voltage + 0.5V - 11 20 μA Stand-by Current ISTB VOUT=setting output voltage x 0.95, CE=0V- - 0.5 μA Oscillation Frequency FOSC Same as IDD1 85 100 115 kHz Maximum Duty Ratio MAXDTY Same as IDD1 78 85 92 % PFM Duty Ratio (* 3) PFMDTY IOUT0mA 15 25 35 % CE \"High\" Voltage VCEH VOUT=setting output voltage x0.95 0.65 - - V CE \"Low\" Voltage VCEL VOUT=setting output voltage x0.95 - - 0.20V EXT \"High\" ON Resistance REXTH =Same as IDD1, VEXT=VOUT-0.4V - 29 43 Ω EXT \"Low\" ON Resistance REXTL Same as IDD1, VEXT0.4V - 19 27 Ω

Efficiency (* 2) EFFI - 84 - %

=Soft-Start Time TSS 5 10 20 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.

= 0.8V or more, but with a value of VDD = 2.0V or more, Oscillation will occur with a value of VDD=

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).

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XC6367/6368 Series

■ELECTRICAL CHARACTERISTICS (Continued)

XC6367A501MR, XC6368A501MR

VOUT=5.0V, FOSC=100kHz, Ta=25℃

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX.UNITS

Output Voltage VOUT 4875 5.000 5.125V Supply Voltage (* 1) VDD 2.0 - 10.0V Maximum Input Voltage VIN 10.0 - - V Oscillation Start Voltage 1 VST1 Tr: 2SD1628, IOUT1.0mA - - 0.9 V Oscillation Start Voltage 2 VST2 VOUT=CE: Apply voltage - - 0.8 V Oscillation Hold Voltage VHLD Tr: 2SX1628, IOUT1.0mA - - 0.7 V Supply Current 1 IDD1 VOUT=CE=setting output voltage x 0.95 - 70 120 μA Supply Current 2 IDD2 VOUT=CE=setting output voltage + 0.5V - 11 22 μA Stand-by Current ISTB VOUT=setting output voltage x 0.95, CE=0V- - 0.5 μA Oscillation Frequency FOSC Same as IDD1 85 100 115 kHz Maximum Duty Ratio MAXDTY Same as IDD1 78 85 92 % PFM Duty Ratio (* 3) PFMDTY IOUT0mA 15 25 35 % CE \"High\" Voltage VCEH VOUT=setting output voltage x0.95 0.65 - - V CE \"Low\" Voltage VCEL VOUT=setting output voltage x0.95 - - 0.20V EXT \"High\" ON Resistance REXTH Same as IDD1, VEXT=VOUT-0.4V - 20 29 Ω =EXT \"Low\" ON Resistance REXTL Same as IDD1, VEXT0.4V - 13 19 Ω

Efficiency (* 2) EFFI - 87 - %

=Soft-Start Time TSS 5 10 20 msec

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.

= 0.8V or more, but with a value of VDD = 2.0V or more, Oscillation will occur with a value of VDD

=

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).

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XC6367/6368

Series

■ELECTRICAL CHARACTERISTICS (Continued)

XC6367B101MR, XC6368B101MR

VOUT=3.0V, FOSC=100kHz, Ta=25℃

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX.UNITS

Output Voltage VOUT 2.925 3.000 3.075V Supply Voltage (* 1) VDD 2.0 - 10.0V Maximum Input Voltage VIN 10.0 - - V Oscillation Start Voltage 1 VST1 Tr: 2SD1628, IOUT1.0mA - - 0.9 V Oscillation Start Voltage 2 VST2 VDD=CE: Apply voltage, FB=0V - - 0.8 V Oscillation Hold Voltage VHLD Tr: 2SD1628, IOUT1.0mA - - 0.7 V Supply Current 1 IDD1 VDD=CE=2.85V, FB=0V - 50 90 μA Supply Current 2 IDD2 VDD=CE=3.5V, FB=1.2V - 11 20 μA Stand-by Current ISTB VDD=2.85V, CE=0V, FB=0V - - 0.5 μA Oscillation Frequency FOSC Same as IDD1 85 100 115 kHz Maximum Duty Ratio MAXDTY Same as IDD1 78 85 92 % PFM Duty Ratio (*3) PFMDTY IOUT0mA 15 25 35 % CE \"High\" Voltage VCEH VDD =2.85V,FB=0V 0.65 - - V CE \"Low\" Voltage VCEL VDD =2.85V,FB=0V - - 0.20V EXT \"High\" ON Resistance REXTH Same as IDD1, VEXT=VDD-0.4V - 32 47 Ω =EXT \"Low\" ON Resistance REXTL Same as IDD1, VEXT0.4V - 20 30 Ω

Efficiency (* 2) EFFI - 84 - %

=Soft-Start Time TSS 5 10 20 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.

=DD = 2.0V or more, Oscillation will occur with a value of VDD = 0.8V or more, but with a value of V

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).

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XC6367/6368 Series

■TEST CIRCUITS

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XC6367/6368

Series

■TEST CIRCUITS (Continued)

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XC6367/6368 Series

■TEST CIRCUITS (Continued)

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XC6367/6368

Series

■TEST CIRCUITS (Continued)

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XC6367/6368 Series

■TEST CIRCUITS (Continued)

●External Components

: 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.) L : 22μH (CR, SUMIDA FOSC=300kHz) 47μH (CR75, SUMIDA FOSC=100, 180kHz) 10μH (CR, SUMIDA FOSC=500kHz) SD : MA2Q735 (Schottky Diode, SUMIDA MATSUSHITA) CIN : 16V, 220μF (Aluminium Electrolytic Capacitor) CL : 16V, 47μF + 47μF (Tantalum capacitor, NICHICON MCE)

NPN Tr type:

Tr : 2SD1628 (SANYO) Rb : 500Ω(Adjust according to load and Tr. hFE levels) Cb : 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):

0.1μF (Ceramic Capacitor) CSS :

470kΩ(C, F Type), 220kΩ(D Type) RSS : Tr

B, D type (FB versions)

: Set up so that RFB1÷RFB2 = VOUT - 1 (VOUT = setting output voltage), RFB

Please use with RFB1 + RFB2 ≦2MΩ CFB : 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. e.g 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

Rds (ON)

0.15Ω@ Vgs=1.5V 0.095Ω@ Vgs=2.5V

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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 forthe 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. Inparticular, 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 starttime externally set-up.

Soft-start time (TSS) is between MIN & MAX, as indicated in the graphs below, so please select soft-startcapacitorvalue (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 & CFBare selected from the area indicated within the lines of fzfb = 0.1kHz and fzfb = 20 kHz as shown on the graphbelow. Please select combinations of values as close to the fzfb = 10kHz line as possible.

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XC6367/6368 Series

■TYPICAL PERFORMANCE CHARACTERISTICS

(1) Output Voltage vs. Output Current

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XC6367/6368

Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(1) Output Voltage vs. Output Current (Continued)

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XC6367/6368 Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(2) Efficiency vs. Output Current

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XC6367/6368

Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(2) Efficiency vs. Output Current (Continued)

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XC6367/6368 Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(3) Ripple Voltage vs. Output Current

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XC6367/6368

Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(3) Ripple Voltage vs. Output Current (Continued)

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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

元器件交易网www.cecb2b.com

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

元器件交易网www.cecb2b.com

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

元器件交易网www.cecb2b.com

XC6367/6368

Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(20) Load Transient Response

579