XCL205/XCL206/XCL207 Series
ETR28001-017
Inductor Built-in Step-Down “micro DC/DC” Converters
☆Green Operation Compatible
■GENERAL DESCRIPTION
The XCL205/XCL206/XCL207 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a
control IC in one tiny package (2.5mm×2.0mm, h=1.0mm). A stable power supply with an output current of 600mA is
configured using only two capacitors connected externally.
Operating voltage range is from 2.0V to 6.0V(XCL20xG:1.8V~6.0V). Output voltage is internally set in a range from 0.8V to
4.0V in increments of 0.05V. The device is operated by 3.0MHz, and includes 0.42Ω P-channel driver transistor and 0.52Ω Nchannel switching transistor. As for operation mode, the XCL205 series is PWM control, the XCL206 series is automatic
PWM/PFM switching control and the XCL207 series can be manually switched between the PWM control mode and
the0automatic PWM/PFM switching control mode, allowing fast response, low ripple and high efficiency over the full range of
loads (from light load to heavy load). During stand-by, the device is shutdown to reduce current consumption to as low as
1.0μA or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal driver transistor is forced OFF when input
voltage becomes 1.4V or lower.
XCL205B (G, F)/XCL206B (G, F)/XCL207B (G, F) series provide short-time turn-on by the soft start function internally set in
0.25ms (TYP). XCL205B(C,G,F) /XCL206 B(C,G,F) / XCL207B(C,G,F) integrate CL auto discharge function which enables the
electric charge stored at the output capacitor CL to be discharged via the internal auto-discharge switch located between the
LX and VSS pins. When the devices enter stand-by mode, output voltage quickly returns to the VSS level as a result of this
function.
■FEATURES
■APPLICATIONS
Ultra-Small
Input Voltage
●Mobile phones, Smart phones
●Bluetooth Headsets
Output Voltage
High Efficiency
Output Current
Oscillation Frequency
Maximum Duty Cycle
Capacitor
CE Function
●WiMAX PDAs, MIDs, UMPCs
●Portable game consoles
●Digital cameras, Camcorders
●Electronic dictionaries
Protection Circuits
Control Methods
Operating Ambient Temperature
Environmentally Friendly
: 2.5mm×2.0mm, h=1.0mm
: 2.0V ~ 6.0V(A/B/C Type)
1.8V ~ 6.0V(G/F Type)
: 0.8V ~ 4.0V (±2.0%)
: 90% (VIN=4.2V, VOUT=3.3V)
: 600mA
: 3.0MHz (±15%)
: 100%
: Low ESR Ceramic
: Active High
Soft-Start Circuit Built-In
CL High Speed Auto Discharge
:Current Limiter Circuit Built-In
(Constant Current & Latching)
: PWM (XCL205)
PWM/PFM Auto (XCL206)
PWM/PFM Manual (XCL207)
: -40℃ ~ 85℃
: EU RoHS Compliant, Pb Free
■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE
CHARACTERISTICS
XCL205/206/207 Series A/B/C/G Types
XCL205A333xx/XCL206A333xx/XCL207A333xx
100
L1
600m
CL
10μF
Vss
VOUT
80
VIN
Vss
CIN
4.7μF
CE/MOD
L2
Efficency:EFFI(%)
LX
XCL206/XCL207(PWM/PFM)
60
VIN= 5.5V
5.0V
4.2V
40
XCL205/XCL207
(PWM)
20
VOUT=3.3V
(TOP VIEW)
* “L1 and LX”, and “L2 and VOUT” is connected by wiring.
0
0.1
1
10
100
1000
Output Current:IOUT (mA)
1/27
XCL205/XCL206/XCL207 Series
■BLOCK DIAGRAM
1) XCL205 / XCL206 / XCL207 series A Type
L2
L1
Inductor
Phase
Compensation
VOUT
R1
CFB
Current Feedback
Current Limit
PWM
Comparator
Error
Amp.
FB
Logic
R2
Synch
Buffer
Drive
Lx
VSHORT
Vref with
Soft Start,
CE
VIN
PWM/PFM
Selector
VSS
Ramp Wave
Generator
OSC
UVLO Cmp
UVLO
R3
VSS
CE/MODE
Control
Logic
R4
CE/MODE
2) XCL205 / XCL206 / XCL207 series B/C/G Type
L2
L1
Inductor
Phase
Compensation
VOUT
R1
CFB
Current Feedback
Current Limit
PWM
Comparator
Error
Amp.
FB
Logic
R2
Synch
Buffer
Drive
Lx
VSHORT
Vref with
Soft Start,
CE
VIN
PWM/PFM
Selector
VSS
Ramp Wave
Generator
OSC
UVLO Cmp
UVLO
R3
VSS
CE/
CE/MODE
Control
Logic
R4
CE/MODE
3) XCL205 / XCL206 / XCL207 series F Type
L2
L1
Inductor
Phase
Compensation
FB
Error
Amp.
FB
Current Feedback
Current Limit
PWM
Comparator
Logic
Synch
Buffer
Drive
Lx
VSHORT
Vref with
Soft Start,
CE
VIN
PWM/PFM
Selector
VSS
UVLO Cmp
R3
VSS
R4
UVLO
Ramp Wave
Generator
OSC
CE/
CE/MODE
Control
Logic
CE/MODE
NOTE: The XCL205 offers a fixed PWM control, a signal from CE/MODE Control Logic to PWM/PFM Selector is fixed to "L" level inside.
The XCL206 control scheme is PWM/PFM automatic switching, a signal from CE/MODE Control Logic to PWM/PFM Selector is fixed to
"H" level inside. The diodes placed inside are ESD protection diodes and parasitic diodes.
2/27
XCL205/XCL206/XCL207
Series
■PRODUCT CLASSIFICATION
●Ordering
Information
XCL205①②③④⑤⑥-⑦(*1) Fixed PWM control
XCL206①②③④⑤⑥-⑦(*1) PWM / PFM automatic switching control
XCL207①②③④⑤⑥-⑦(*1) Manual Mode Selection Pin (Semi-custom)
DESIGNATOR
ITEM
SYMBOL
A
①
B
Fixed Output
Voltage
Functions selection
(All CE active high)
C
G
Output Voltage
External Setting
(*2)
(*3)
VIN≧2.0V,
No CL auto discharge, Standard soft-start
VIN≧2.0V, Fixed Output Voltage
CL auto discharge, High speed soft-start
VIN≧2.0V, Fixed Output Voltage
CL auto discharge, Standard soft-start
VIN≧1.8V, Fixed Output Voltage
CL auto discharge, High speed soft-start
VIN≧1.8V, CL auto discharge,
High speed soft-start
Output voltage options
e.g. 1.2V → ②=1, ③=2
1.25V → ②=1, ③=C
0.05V increments :
0.05=A,0.15=B, 0.25=C, 0.35=D, 0.45=E,
0.55=F, 0.65=H, 0.75=K, 0.85=L, 0.95=M
External Setting 0.8V (F type)
3.0MHz
②③
Fixed Output Voltage
0~9
A~M
④
Output Voltage External Setting
Oscillation Frequency
08
3
Packages
(Order Unit)
AR-G(*2)
CL-2025 (3,000pcs/Reel)
CR-G(*3)
CL-2025-02(3,000pcs/Reel)
⑤⑥-⑦
(*1)
F
DESCRIPTION
The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
AR-G is storage temperature range "-40℃ ~ 105℃".
CR-G is storage temperature range "-40℃ ~ 125℃".
■PIN CONFIGURATION
L1
7
VIN 6
1 Lx
Vss 5
2 Vss
CE/MODE 4
3 VOUT/FB
8
L2
(BOTTOM VIEW)
* It should be connected the VSS pin (No. 2 and 5) to the GND pin.
* If the dissipation pad needs to be connected to other pins, it should be connected
to the GND pin.
* Please refer to pattern layout page for the connecting to PCB.
3/27
XCL205/XCL206/XCL207 Series
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTIONS
1
2,5
Lx
VSS
VOUT
FB
CE / MODE
VIN
L1
L2
Switching Output
Ground
3
4
6
7
8
Fixed Output Voltage Pin (A/B/C/G types)
Output Voltage Sense Pin (F type)
Chip Enable & Mode Switch
Power Input
Inductor Electrodes
■FUNCTION
OPERATIONAL STATES
CE/MODE
XCL205
XCL206
XCL207
H Level (*1)
Synchronous
PWM Fixed Control
Synchronous
PWM/PFM
Automatic Switching
Synchronous
PWM/PFM
Automatic Switching
M Leve (*2)
-
-
Synchronous
PWM Fixed Control
L Level (*3)
Stand-by
Stand-by
Stand-by
※series CE/MODE pin voltage level range
H Level ：0.65V ≦ H Level ≦ 6V (XCL205,XCL206)
(*1)
H Level ：VIN-0.25V ≦ H Level ≦ VIN (XCL207)
M Level ：0.65V ≦ M Level ≦ VIN-1.0V
(*2)
L Level ：0V ≦ L Level ≦ 0.25V
(*3)
Please do not leave the CE/MODE pin open
(*4)
■ABSOLUTE MAXIMUM RATINGS
RATINGS
UNITS
VIN Pin Voltage
LX Pin Voltage
PARAMETER
VIN
VLX
-0.3 ~ 6.5
-0.3 ~ VIN + 0.3
V
V
VOUT Pin Voltage(A/B/C/G types)
VFB Pin Voltage(F type)
VOUT
VFB
-0.3 ~ 6.5
-0.3 ~ 6.5
V
V
CE/MODE Pin Voltage
LX Pin Current
VCE
ILX
-0.3 ~ 6.5
±1500
V
mA
Pd
1000 (40mm x 40mm Standard board) (*1)
mW
Topr
-40 ~ 85
℃
Tstg
-40 ~ 105
-40 ~ 125
℃
Power Dissipation
(Ta=25℃)
SYMBOL
CL2025
CL2025-02
Operating Ambient Temperature
Storage
Temperature(*2)
CL-2025
CL-2025-02
(*1)
The power dissipation figure shown is PCB mounted and is for reference only.
(*2)
Storage temperature, are divided by the product specification of the package.
Please refer to PACKAGING INFORMATION for the mounting condition.
4/27
XCL205/XCL206/XCL207
Series
■ELECTRICAL CHARACTERISTICS
Ta=25℃
●XCL205Axx3AR/XCL206Axx3AR/XCL207Axx3AR/XCL205Axx3CR/XCL206Axx3CR/XCL207Axx3CR,
PARAMETER
SYMBOL
Output Voltage
VOUT
Operating Voltage Range
VIN
CONDITIONS
When connected to external components,
VIN=VCE=5.0V, IOUT=30mA
Maximum Output Current
IOUTMAX
VIN=VOUT(T)+2.0V, VCE=1.0V
When connected to external components (*9)
UVLO Voltage
VUVLO
VCE=VIN,VOUT=0V,
Voltage which Lx pin holding “L” level (*1, *11)
Supply Current (XCL205)
MIN.
TYP.
MAX.
UNITS CIRCUIT
V
①
2.0
-
6.0
V
①
600
-
-
mA
①
1.00
1.40
1.78
V
③
-
46
65
-
21
35
μA
②
IDD
VIN=VCE=5.0V, VOUT=VOUT(T)×1.1
ISTB
VIN=5.0V, VCE=0V, VOUT=VOUT(T)×1.1
-
0
1.0
μA
②
Oscillation Frequency
fOSC
When connected to external components,
VIN=VOUT(T)+2.0V,VCE=1.0V, IOUT=100mA
2550
3000
3450
kHz
①
PFM Switching Current (*12)
IPFM
When connected to external components,
VIN=VOUT(T)+2.0V, VCE=VIN , IOUT=1mA
mA
⑩
PFM Duty Limit (*12)
DTYLIMIT_PFM
VCE= VIN= VOUT(T) +1.0V, IOUT=1mA
-
200
300
%
①
Maximum Duty Cycle
DMAX
VIN=VCE=5.0V, VOUT=VOUT (T)×0.9
100
-
-
%
③
DMIN
VIN=VCE=5.0V, VOUT=VOUT (T)×1.1
-
-
0
%
③
-
-
%
①
900
0.35
0.42
0.45
0.52
0.01
0.01
1050
0.55
0.67
0.65
0.77
1.0
1.0
1350
Ω
Ω
Ω
Ω
μA
μA
mA
④
④
⑤
⑤
⑥
-
±100
-
ppm/ ℃
①
0.65
-
VIN
V
③
VSS
-
0.25
V
③
-
-
VIN - 1.0
V
①
VIN 0.25
-
-
V
①
-0.1
-0.1
0.0
0.0
0.1
0.1
μA
μA
⑤
⑤
0.5
0.9
2.5
ms
①
1.0
-
20
ms
⑦
V
⑦
Supply Current (XCL206, XCL207)
Stand-by Current
Minimum Duty Cycle
Efficiency(*2)
EFFI
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "H" Leakage Current (*5)
Lx SW "L" Leakage Current (*5)
Current Limit (*10)
Output Voltage
Temperature Characteristics
RLｘH
RLｘH
RLｘL
RLｘL
ILEAKH
ILEAKL
ILIM
△VOUT/
(VOUT・△
Topr)
CE "H" Voltage
VCEH
CE "L" Voltage
VCEL
PWM "H" Level Voltage (*13)
VPWMH
PWM "L" Level Voltage (*13)
VPWML
CE "H" Current
CE "L" Current
ICEH
ICEL
Soft Start Time
tSS
Latch Time
tLAT
Short Protection
Threshold Voltage
VSHORT
Inductance Value
Allowed Inductor Current
L
IDC
When connected to external components,
VCE=VIN＝VOUT (T)+1.2V, IOUT = 100mA
VIN=VCE=5.0V, VOUT=0V, ILX=100mA (*3)
VIN=VCE=3.6V, VOUT=0V, ILX=100mA (*3)
VIN=VCE=5.0V (*4)
VIN=VCE=3.6V, (*4)
VIN=VOUT=5.0V, VCE=0V, LX=0V
VIN=VOUT=5.0V, VCE=0V, LX= 5.0V
VIN=VCE=5.0V, VOUT=VOUT(T)×0.9 (*8)
IOUT =30mA
-40℃≦Topr≦85℃
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “H” level (*11)
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “L” level (*11)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes 2550kHz≦fOSC≦3450kHz (*13)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes fOSC＜2550kHz (*13)
VIN=VCE=5.0V, VOUT=0V
VIN=5.0V, VCE=0V, VOUT=0V
When connected to external components,
VCE=0V→VIN , IOUT=1mA
VIN=VCE=5.0V, VOUT=0.8×VOUT(T)
Short Lx at 1Ω resistance (*7)
Sweeping VOUT, VIN=VCE=5.0V, Short Lx at
1Ω resistance, VOUT voltage which Lx becomes “L”
level within 1ms
Test frequency=1MHz
ΔT=40℃
-
1.5
1000
-
μH
mA
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T) =Nominal Voltage
NOTE:
(*1) Including hysteresis operating voltage range.
(*2) EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
(*3) ON resistance (Ω)= (V - Lx pin measurement voltage) / 100mA
IN
(*4) Design value
(*5) When temperature is high, a current of approximately 10μA (maximum) may leak.
(*6) The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.
(*7) Time until it short-circuits V
OUT with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.
(*8)
When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
(*9)
When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*10)
Current limit denotes the level of detection at peak of coil current.
(*11)
“H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
(*12) I
PFM and DTYLIMIT_PFM are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
(*13)
VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
5/27
XCL205/XCL206/XCL207 Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCL205Bxx3AR/XCL206Bxx3AR/XCL207Bxx3AR/XCL205Bxx3CR/XCL206Bxx3CR/XCL207Bxx3CR,
PARAMETER
SYMBOL
Output Voltage
VOUT
Operating Voltage Range
VIN
Maximum Output Current
IOUTMAX
UVLO Voltage
VUVLO
Supply Current (XCL205)
CONDITIONS
When connected to external components,
VIN=VCE=5.0V, IOUT=30mA
VIN=VOUT(T)+2.0V, VCE=1.0V
When connected to external components (*9)
VCE=VIN,VOUT=0V,
Voltage which Lx pin holding “L” level (*1, *11)
Supply Current (XCL206, XCL207)
Stand-by Current
IDD
VIN=VCE=5.0V, VOUT=VOUT(T)×1.1
ISTB
Oscillation Frequency
fOSC
PFM Switching Current (*12)
IPFM
VIN=5.0V, VCE=0V, VOUT=VOUT(T)×1.1
When connected to external components,
VIN =VOUT(T)+2.0V,VCE=1.0V, IOUT=100mA
When connected to external components,
VIN =VOUT(T)+2.0V, VCE = VIN , IOUT=1mA
Ta=25℃
MIN.
TYP.
MAX.
UNITS CIRCUIT
V
①
2.0
-
6.0
V
①
600
-
-
mA
①
1.00
1.40
1.78
V
③
-
46
65
-
21
35
μA
②
-
0
1.0
μA
②
2550
3000
3450
kHz
①
mA
⑩
DTYLIMIT_PFM
VCE=VIN= VOUT(T) +1.0V, IOUT=1mA
-
200
300
%
①
Maximum Duty Cycle
DMAX
VIN=VCE=5.0V, VOUT=VOUT (T)×0.9
100
-
-
%
③
Minimum Duty Cycle
DMIN
VIN=VCE=5.0V, VOUT=VOUT (T)×1.1
When connected to external components,
VCE=VIN＝VOUT (T)+1.2V, IOUT=100mA
VIN=VCE=5.0V, VOUT=0V, ILX=100mA (*3)
VIN=VCE=3.6V, VOUT=0V, ILX=100mA (*3)
VIN=VCE=5.0V (*4)
VIN=VCE = 3.6V (*4)
VIN=VOUT=5.0V, VCE =0V, LX=0V
VIN=VCE=5.0V, VOUT=VOUT (T)×0.9 (*8)
-
-
0
%
③
-
-
%
①
900
0.35
0.42
0.45
0.52
0.01
1050
0.55
0.67
0.65
0.77
1.0
1350
Ω
Ω
Ω
Ω
μA
mA
④
④
⑨
⑥
-
±100
-
ppm/ ℃
①
0.65
-
VIN
V
③
VSS
-
0.25
V
③
-
-
VIN - 1.0
V
①
VIN 0.25
-
-
V
①
-0.1
-0.1
0.0
0.0
0.1
0.1
μA
μA
⑤
⑤
ms
①
ms
⑦
V
⑦
Ω
μH
mA
⑧
PFM Duty Limit
Efficiency
(*12)
(*2)
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "H" Leakage Current (*5)
Current Limit (*10)
EFFI
Output Voltage
Temperature Characteristics
RLｘH
RLｘH
RLｘL
RLｘL
ILEAKH
ILIM
△VOUT/
(VOUT・△
Topr)
CE "H" Voltage
VCEH
CE "L" Voltage
VCEL
PWM "H" Level Voltage (*13)
VPWMH
PWM "L" Level Voltage (*13)
VPWML
CE "H" Current
CE "L" Current
ICEH
ICEL
Soft Start Time
tSS
Latch Time
tLAT
Short Protection
Threshold Voltage
VSHORT
CL Discharge
Inductance Value
Allowed Inductor Current
RDCHG
L
IDC
IOUT =30mA
-40℃≦Topr≦85℃
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “H” level (*11)
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “L” level (*11)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes 2550kHz≦fOSC≦3450kHz (*13)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes fOSC＜2550kHz (*13)
VIN=VCE=5.0V, VOUT=0V
VIN=5.0V, VCE=0V, VOUT=0V
When connected to external components,
VCE=0V→VIN , IOUT=1mA
VIN=VCE=5.0V, VOUT=0.8×VOUT(T)
Short Lx at 1Ω resistance (*7)
Sweeping VOUT, VIN=VCE=5.0V, Short Lx at
1Ω resistance, VOUT voltage which Lx becomes “L”
level within 1ms
VIN=5.0V, LX=5.0V, VCE=0V, VOUT=Open
Test frequency =1MHz
ΔT=40℃
1.0
200
-
-
20
300
1.5
1000
450
-
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T) =Nominal Voltage
NOTE:
Including hysteresis operating voltage range.
EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
(*4) Design value
(*5)
When temperature is high, a current of approximately 10μA (maximum) may leak.
(*6) The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.
(*7) Time until it short-circuits V
OUT with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.
(*8) When V is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
IN
(*9) When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*10) Current limit denotes the level of detection at peak of coil current.
(*11) “H”=V ~V -1.2V, “L”=+0.1V~-0.1V
IN
IN
(*12)
IPFM and DTYLIMIT_PFM are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
(*13) V
PWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
(*1)
(*2)
(*3)
6/27
XCL205/XCL206/XCL207
Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCL205Cxx3AR/XCL206Cxx3AR/XCL207Cxx3AR/XCL205Cxx3CR/XCL206Cxx3CR/XCL207Cxx3CR,
PARAMETER
SYMBOL
Output Voltage
VOUT
Operating Voltage Range
VIN
Maximum Output Current
IOUTMAX
UVLO Voltage
VUVLO
Supply Current (XCL205)
CONDITIONS
When connected to external components,
VIN = VCE =5.0V, IOUT =30mA
VIN=VOUT(T)+2.0V, VCE=1.0V
When connected to external components (*9)
VCE=VIN,VOUT=0V,
Voltage which Lx pin holding “L” level (*1, *11)
IDD
VIN =VCE=5.0V, VOUT= VOUT(T)×1.1
Stand-by Current
ISTB
Oscillation Frequency
fOSC
PFM Switching Current (*12)
IPFM
VIN =5.0V, VCE=0V, VOUT= VOUT(T)×1.1
When connected to external components,
VIN =VOUT(T)+2.0V,VCE=1.0V, IOUT=100mA
When connected to external components,
VIN =VOUT(T)+2.0V, VCE = VIN , IOUT=1mA
Supply Current (XCL206, XCL207)
PFM Duty Limit
(*12)
DTYLIMIT_PFM
VCE= VIN = VOUT(T) +1.0V, IOUT=1mA
Maximum Duty Cycle
MAXDTY
VIN = VCE =5.0V, VOUT = VOUT (T)×0.9
Minimum Duty Cycle
MINDTY
VIN = VCE =5.0V, VOUT = VOUT (T)×1.1
When connected to external components,
VCE = VIN ＝ VOUT (T)+1.2V, IOUT = 100mA
VIN = VCE = 5.0V, VOUT = 0V,ILX = 100mA (*3)
VIN = VCE = 3.6V, VOUT = 0V,ILX = 100mA (*3)
VIN = VCE = 5.0V (*4)
VIN = VCE = 3.6V (*4)
VIN= VOUT =5.0V, VCE =0V, LX=0V
VIN = VCE= 5.0V, VOUT = VOUT (T)×0.9 (*8)
IOUT =30mA
-40℃≦Topr≦85℃
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “H” level (*11)
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “L” level (*11)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes 2550kHz≦fOSC≦3450kHz (*13)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes fOSC＜2550kHz (*13)
VIN = VCE =5.0V, VOUT = 0V
VIN =5.0V, VCE = 0V, VOUT = 0V
When connected to external components,
VCE=0V→VIN , IOUT=1mA
VIN=VCE=5.0V, VOUT=0.8×VOUT(T)
Short Lx at 1Ω resistance (*7)
Sweeping VOUT, VIN=VCE=5.0V, Short Lx at
1Ω resistance, VOUT voltage which Lx becomes “L”
level within 1ms
VIN = 5.0V LX = 5.0V VCE = 0V VOUT = open
Test frequency=1MHz
ΔT=40℃
Efficiency
(*2)
EFFI
Lx SW "H" ON Resistance 1
RLｘH
Lx SW "H" ON Resistance 2
RLｘH
Lx SW "L" ON Resistance 1
RLｘL
Lx SW "L" ON Resistance 2
RLｘL
Lx SW "H" Leakage Current (*5)
ILEAKH
Current Limit (*10)
ILIM
Output Voltage
△VOUT/
(VOUT・△Topr)
Temperature Characteristics
CE "H" Voltage
VCEH
CE "L" Voltage
VCEL
PWM "H" Level Voltage (*13)
VPWMH
PWM "H" Level Voltage (*13)
VPWML
CE "H" Current
CE "L" Current
ICEH
ICEL
Soft Start Time
tSS
Latch Time
tLAT
Short Protection
Threshold Voltage
VSHORT
CL Discharge
Inductance Value
Allowed Inductor Current
RDCHG
L
IDC
Ta=25℃
MIN.
TYP.
MAX.
UNITS CIRCUIT
V
①
2.0
-
6.0
V
①
600
-
-
mA
①
1.00
1.40
1.78
V
③
-
46
65
21
35
μA
②
-
0
1.0
μA
②
2550
3000
3450
kHz
①
mA
⑩
-
200
300
%
①
100
-
-
%
③
-
-
0
%
③
-
-
%
①
900
0.35
0.42
0.45
0.52
0.01
1050
0.55
0.67
0.65
0.77
1.0
1350
Ω
Ω
Ω
Ω
μA
mA
④
④
⑨
⑥
-
±100
-
ppm/ ℃
①
0.65
-
6.0
V
③
VSS
-
0.25
V
③
-
-
VIN - 1.0
V
①
VIN 0.25
-
-
V
①
-0.1
-0.1
0.0
0.0
0.1
0.1
μA
μA
⑤
⑤
0.5
0.9
2.5
ms
①
1.0
-
20
ms
⑦
V
⑦
Ω
μH
mA
⑧
-
200
-
300
1.5
1000
450
-
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T) = Nominal Voltage
NOTE:
(*1)
Including hysteresis operating voltage range.
EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
(*3)
ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
(*4)
Design value
(*5)
When temperature is high, a current of approximately 10μA (maximum) may leak.
(*6)
The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.
(*7)
Time until it short-circuits VOUT with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.
(*8)
When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
(*9)
When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*10)
Current limit denotes the level of detection at peak of coil current.
(*11)
“H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
(*12)
IPFM and DTYLIMIT_PFM are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
(*13)
VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
(*2)
7/27
XCL205/XCL206/XCL207 Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCL205Gxx3AR/XCL206Gxx3AR/XCL207Gxx3AR/XCL205Gxx3CR/XCL206Gxx3CR/XCL207Gxx3CR,
PARAMETER
SYMBOL
Output Voltage
VOUT
Operating Voltage Range
VIN
Maximum Output Current
IOUTMAX
UVLO Voltage
VUVLO
Supply Current (XCL205)
CONDITIONS
When connected to external components,
VIN = VCE =5.0V, IOUT =30mA
VIN=VOUT(T)+2.0V, VCE=1.0V
When connected to external components (*9)
VCE=VIN,VOUT(T)×0.5V(*14),
Voltage which Lx pin holding “L” level (*1, *11)
IDD
VIN =VCE=5.0V, VOUT= VOUT(T)×1.1
Stand-by Current
ISTB
Oscillation Frequency
fOSC
PFM Switching Current (*12)
IPFM
VIN =5.0V, VCE=0V, VOUT= VOUT(T)×1.1
When connected to external components,
VIN =VOUT(T)+2.0V,VCE=1.0V, IOUT=100mA
When connected to external components,
VIN =VOUT(T)+2.0V, VCE = VIN , IOUT=1mA
Supply Current (XCL206, XCL207)
PFM Duty Limit
(*12)
DTYLIMIT_PFM
VCE= VIN = VOUT(T) +1.0V, IOUT=1mA
Maximum Duty Cycle
MAXDTY
VIN = VCE =5.0V, VOUT = VOUT (T)×0.9
Minimum Duty Cycle
MINDTY
Efficiency(*2)
EFFI
VIN = VCE =5.0V, VOUT = VOUT (T)×1.1
When connected to external components,
VCE = VIN ＝ VOUT (T)+1.2V, IOUT = 100mA
VIN = VCE = 5.0V, VOUT = 0V,ILX = 100mA (*3)
VIN = VCE = 3.6V, VOUT = 0V,ILX = 100mA (*3)
VIN = VCE = 5.0V (*4)
VIN = VCE = 3.6V (*4)
VIN= VOUT =5.0V, VCE =0V, LX=0V
VIN = VCE= 5.0V, VOUT = VOUT (T)×0.9 (*8)
IOUT =30mA
-40℃≦Topr≦85℃
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “H” level (*11)
VOUT=0V, Applied voltage to VCE,
Voltage changes Lx to “L” level (*11)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes 2550kHz≦fOSC≦3450kHz (*13)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes fOSC＜2550kHz (*13)
VIN = VCE =5.0V, VOUT = 0V
VIN =5.0V, VCE = 0V, VOUT = 0V
When connected to external components,
VCE=0V→VIN , IOUT=1mA
VIN=VCE=5.0V, VOUT=0.8×VOUT(T)
Short Lx at 1Ω resistance (*7)
Sweeping VOUT, VIN=VCE=5.0V, Short Lx at
1Ω resistance, VOUT voltage which Lx becomes “L”
level within 1ms
VIN = 5.0V LX = 5.0V VCE = 0V VOUT = open
Test frequency=1MHz
ΔT=40℃
Lx SW "H" ON Resistance 1
RLｘH
Lx SW "H" ON Resistance 2
RLｘH
Lx SW "L" ON Resistance 1
RLｘL
Lx SW "L" ON Resistance 2
RLｘL
Lx SW "H" Leakage Current (*5)
ILEAKH
Current Limit (*10)
ILIM
Output Voltage
△VOUT/
(VOUT・△Topr)
Temperature Characteristics
CE "H" Voltage
VCEH
CE "L" Voltage
VCEL
PWM "H" Level Voltage (*13)
VPWMH
PWM "H" Level Voltage (*13)
VPWML
CE "H" Current
CE "L" Current
ICEH
ICEL
Soft Start Time
tSS
Latch Time
tLAT
Short Protection
Threshold Voltage
VSHORT
CL Discharge
Inductance Value
Allowed Inductor Current
RDCHG
L
IDC
Ta=25℃
MIN.
TYP.
MAX.
UNITS CIRCUIT
V
①
1.8
-
6.0
V
①
600
-
-
mA
①
1.00
1.40
1.78
V
③
-
46
65
-
21
35
μA
②
-
0
1.0
μA
②
2550
3000
3450
kHz
①
mA
⑩
-
200
300
%
①
100
-
-
%
③
-
-
0
%
③
-
-
%
①
900
0.35
0.42
0.45
0.52
0.01
1050
0.55
0.67
0.65
0.77
1.0
1350
Ω
Ω
Ω
Ω
μA
mA
④
④
⑨
⑥
-
±100
-
ppm/ ℃
①
0.65
-
6.0
V
③
VSS
-
0.25
V
③
-
-
VIN - 1.0
V
①
VIN 0.25
-
-
V
①
-0.1
-0.1
0.0
0.0
0.1
0.1
μA
μA
⑤
⑤
ms
①
ms
⑦
V
⑦
Ω
μH
mA
⑧
-
1.0
200
-
-
20
300
1.5
1000
450
-
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T) = Nominal Voltage
NOTE:
(*1)
Including hysteresis operating voltage range.
EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
(*3.)
ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
(*4.)
Design value
(*5)
When temperature is high, a current of approximately 10μA (maximum) may leak.
(*6)
The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.
(*7)
Time until it short-circuits VOUT with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.
(*8)
When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
(*9)
When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*10)
Current limit denotes the level of detection at peak of coil current.
(*11)
“H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
(*12)
IPFM and DTYLIMIT_PFM are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
(*13)
VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
(*2)
(*14)
8/27
VIN is applied when VOUT (T) x 0.5V becomes more than VIN.
XCL205/XCL206/XCL207
Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCL205F083AR/XCL206F083AR/XCL207F083AR/XCL205F083CR/XCL206F083CR/XCL207F083CR,
PARAMETER
SYMBOL
FB Voltage
VFB
Operating Voltage Range
VIN
Maximum Output Current
IOUTMAX
UVLO Voltage
VUVLO
Supply Current (XCL205)
CONDITIONS
VIN=VCE=5.0V, VFB voltage which Decrease
VFB from 0.9V, Lx becomes “H” (*11) level
VIN=VOUT(T)+2.0V, VCE=1.0V
When connected to external components (*9)
VCE=VIN,VFB= 0.4V,
Voltage which Lx pin holding “L” level (*1, *11)
IDD
VIN =VCE=5.0V, VFB= 0.88V
Stand-by Current
ISTB
Oscillation Frequency
fOSC
PFM Switching Current (*12)
IPFM
VIN =5.0V, VCE=0V, VFB= 0.88V
When connected to external components,
VIN =3.2V, VCE=1.0V, IOUT=100mA
When connected to external components,
VIN =3.2V, VCE = VIN , IOUT=1mA
Supply Current (XCL206, XCL207)
PFM Duty Limit
(*12)
DTYLIMIT_PFM
VCE= VIN = 2.2V, IOUT=1mA
Maximum Duty Cycle
MAXDTY
VIN = VCE =5.0V, VFB = 0.72V
Minimum Duty Cycle
MINDTY
VIN = VCE =5.0V, VFB = 0.88V
When connected to external components,
VCE = VIN = 2.4V, IOUT = 100mA
VIN = VCE = 5.0V, VFB = 0.72V,ILX = 100mA (*3)
VIN = VCE = 3.6V, VFB = 0.72V,ILX = 100mA (*3)
VIN = VCE = 5.0V (*4)
VIN = VCE = 3.6V (*4)
VIN= VFB =5.0V, VCE =0V, LX=0V
VIN = VCE= 5.0V, VFB = 0.72V (*8)
IOUT =30mA
-40℃≦Topr≦85℃
VFB=0.72V, Applied voltage to VCE,
Voltage changes Lx to “H” level (*11)
VFB=0.72V, Applied voltage to VCE,
Voltage changes Lx to “L” level (*11)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes 2550kHz≦fOSC≦3450kHz (*13)
When connected to external components,
IOUT=1mA (*6), Voltage which oscillation
frequency becomes fOSC＜2550kHz (*13)
VIN = VCE =5.0V, VFB = 0.72V
VIN =5.0V, VCE = 0V, VFB = 0.72V
When connected to external components,
VCE=0V→VIN , IOUT=1mA
VIN=VCE=5.0V, VFB=0.64
Short Lx at 1Ω resistance (*7)
VIN=VCE=5.0V, VFB voltage which Decrease
VFB from 0.4V, Lx becomes “L” (*11)level within 1ms
Efficiency
(*2)
EFFI
Lx SW "H" ON Resistance 1
RLｘH
Lx SW "H" ON Resistance 2
RLｘH
Lx SW "L" ON Resistance 1
RLｘL
Lx SW "L" ON Resistance 2
RLｘL
Lx SW "H" Leakage Current (*5)
ILEAKH
Current Limit (*10)
ILIM
Output Voltage
△VOUT/
(VOUT・△Topr)
Temperature Characteristics
CE "H" Voltage
VCEH
CE "L" Voltage
VCEL
PWM "H" Level Voltage (*13)
VPWMH
PWM "H" Level Voltage (*13)
VPWML
CE "H" Current
CE "L" Current
ICEH
ICEL
Soft Start Time
tSS
Latch Time
tLAT
Short Protection
Threshold Voltage
VSHORT
CL Discharge
Inductance Value
Allowed Inductor Current
RDCHG
L
IDC
VIN = 5.0V LX = 5.0V VCE = 0V, VFB = open
Test frequency=1MHz
ΔT=40℃
Ta=25℃
MIN.
TYP.
MAX.
UNITS CIRCUIT
0.784
0.800
0.816
V
③
1.8
-
6.0
V
⑪
600
-
-
mA
⑪
1.00
1.40
1.78
V
③
-
46
65
-
21
35
μA
②
-
0
1.0
μA
②
2550
3000
3450
kHz
⑪
170
220
270
mA
⑫
-
200
300
%
⑪
100
-
-
%
③
-
-
0
%
③
-
86
-
%
⑪
900
0.35
0.42
0.45
0.52
0.01
1050
0.55
0.67
0.65
0.77
1.0
1350
Ω
Ω
Ω
Ω
μA
mA
④
④
⑨
⑥
-
±100
-
ppm/ ℃
⑪
0.65
-
6.0
V
③
VSS
-
0.25
V
③
-
-
VIN - 1.0
V
⑪
VIN 0.25
-
-
V
⑪
-0.1
-0.1
0.0
0.0
0.1
0.1
μA
μA
⑤
⑤
-
0.25
0.40
ms
⑪
1.0
-
20
ms
⑦
0.15
0.20
0.25
V
⑦
200
-
300
1.5
1000
450
-
Ω
μH
mA
⑧
-
Test conditions: VOUT=1.2V when the external components are connected. Unless otherwise stated, VIN=5.0V, applied voltage sequence is VFB→VIN→VCE
NOTE:
(*1)
Including hysteresis operating voltage range.
(*2)
EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
(*3)
ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
(*4)
Design value
(*5)
When temperature is high, a current of approximately 10μA (maximum) may leak.
(*6)
The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.
(*7)
Time until it short-circuits VFB with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
(*8)
When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
(*9)
When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*10)
Current limit denotes the level of detection at peak of coil current.
(*11)
“H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
(*12)
IPFM and DTYLIMIT_PFM are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
(*13)
VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
9/27
XCL205/XCL206/XCL207 Series
■ELECTRICAL CHARACTERISTICS (Continued)
●PFM Switching Current
●Output Voltage
NOMINAL
OUTPUT
VOUT(V)
IPFM(mA)
NOMINAL OUTPUT
MIN
TYP
MAX
VOUT(T)
MIN
TYP
MAX
VOUT(T)≦1.2Ｖ
190
260
350
1.00
0.980
1.000
1.020
1.2V＜VOUT(T)≦1.75Ｖ
180
240
300
1.20
1.176
1.200
1.224
1.8V≦VOUT(T)
170
220
270
1.40
1.372
1.400
1.428
1.50
1.470
1.500
1.530
1.75
1.715
1.750
1.785
1.80
1.764
1.800
1.836
1.90
1.862
1.900
1.938
2.50
2.450
2.500
2.550
2.80
2.744
2.800
2.856
2.85
2.793
2.850
2.907
3.00
2.940
3.000
3.060
3.30
3.234
3.300
3.366
VOLTAGE
VOLTAGE
●Short Protection Threshold Voltage
●Efficiency
NOMINAL
Efficiency (%)
OUTPUT
XCL205/206/207
VOLTAGE
VOLTAGE
VOUT(T)
3.0MHz
1.00
79
VOUT(T)
MIN
TYP
MAX
MIN
TYP
MAX
1.20
82
1.00
0.375
0.500
0.625
0.188
0.250
0.313
1.40
83
1.20
0.450
0.600
0.750
0.225
0.300
0.375
1.50
84
1.40
0.525
0.700
0.875
0.263
0.350
0.438
1.50
0.563
0.750
0.938
0.282
0.375
0.469
1.75
0.656
0.875
1.094
0.328
0.438
0.547
1.80
0.675
0.900
1.125
0.338
0.450
0.563
1.90
0.713
0.950
1.188
0.357
0.475
0.594
2.50
0.938
1.250
1.563
0.469
0.625
0.782
2.80
1.050
1.400
1.750
0.525
0.700
0.875
2.85
1.069
1.425
1.781
0.535
0.713
0.891
3.00
1.125
1.500
1.875
0.563
0.750
0.938
3.30
1.238
1.650
2.063
0.619
0.825
1.032
OUTPUT
1.75
1.80
85
1.90
2.50
2.80
2.85
VSHORT(V)
NOMINAL
86
3.00
3.30
XCL205/206/207A,B,C
●Soft Start Time (XCL20xB, XCL20xG)
NOMINAL OUTPUT
VOLTAGE
tSS(ms)
TYP
MAX
0.8V≦VOUT(T)≦1.75Ｖ
0.25
0.4
1.8V≦VOUT(T)≦4.0Ｖ
0.32
0.5
10/27
XCL205/206/207G
XCL205/XCL206/XCL207
Series
■TEST CIRCUITS
< Circuit No.1 >
Wave Form Measure Point
L2
A
L1
VIN
L2
A
Lx
CE/MODE
CIN
< Circuit No.2 >
V
VOUT
CL
VSS
L1
VIN
1μF
Lx
CE/MODE
VOUT/FB
VSS
※ E xt ernal Component s
CIN : 4.7μF(ceram ic)
CL : 10μF(ceram ic)
< Circuit No.3 >
< Circuit No.4 >
L2
Wave Form Measure Point
L1
VIN
CE/MODE
1μF
L2
Lx
L1
VIN
Rpulldown
200Ω
VOUT/FB
1μF
Lx
CE/MODE
VSS
V
VOUT/FB
VSS
100mA
ON resistance = (V IN-V Lx)/100mA
< Circuit No.5 >
< Circuit No.6 >
L1L1
L2
VIN
1μF
ICE H
A
ILeakH
Lx
CE/MODE
VOUT/FB
A
VIN
ILeakL
1μF
L2
L1
CE/MODE
VSS
Wave Form Measure P oint
L1
Lx
V
VOUT/FB
VSS
ILI M
ICE L
< Circuit No.7 >
< Circuit No.8 >
L2
L1
VIN
1μF
Wave Form Measure
Point
Lx
CE/MODE
VOUT/FB
Lx
CE/MODE
1uF
VOUT/FB
< Circuit No.10 >
L2
L1
VIN
A
Lx
CE/MODE
VOUT/FB
CIN
VSS
A
VSS
Rpulldown
1Ω
< Circuit No.9 >
CIN
L1
VIN
Il at
VSS
A
ILx
L2
Wave Form Measure Point
L2
L
L1
VIN
Lx
CE/MODE
V
VOUT
CL
VSS
※ E xt ernal Component s
L : 1.5uH(S elect)
CIN : 4.7μF(ceram ic)
CL : 10μF(ceram ic)
< Circuit No.11 >
< Circuit No.12 >
Wave Form Measure Point
Wave Form Measure Point
V OUT
V OUT
CFB
A
VIN
L2
L1
Lx
R1
CL
R2
CIN
※ E xt ernal Component s
CIN : 4.7μF(ceram ic)
CL : 10μF(ceram ic)
R1 : 150kΩ
R2 ： 300kΩ
CFB ： 100pF(ceram ic)
※V OUT(T)=1.2V
CE/MODE
VSS
FB
CFB
V
A
VIN
L2
L1
L
Lx
R1
CL
R2
CIN
CE/MODE
FB
V
VSS
※ E xt ernal Component s
L : 1.5uH(S elect)
CIN : 4.7μF(ceram ic)
CL : 10μF(ceram ic)
R1 : 150kΩ
R2 ： 300kΩ
CFB ： 100pF(ceram ic)
※V OUT(T)=1.2V
11/27
XCL205/XCL206/XCL207 Series
■TYPICAL APPLICATION CIRCUIT
●XCL205/XCL206/XCL207 Series
A/B/C/G Types
●External Components
L1
V
LX
VIN
VSS
VSS
CIN : 10V/4.7μF (Ceramic)
VIN
C
CL : 6.3V/10μF (Ceramic)
NOTE
CIN
VOUT
The Inductor can be used only for this DC/DC converter.
Please do not use this inductor for the other reasons.
CL
VOUT
Please use B, X5R, and X7R grades in temperature characteristics
CE/MODE
for CIN and CL capacitors.
These grade ceramic capacitors minimize capacitance-loss as a
L2
function of voltage stress.
●XCL205/XCL206/XCL207 Series F Type
● External Components
CIN : 10V/4.7μF(Ceramic)
CL : 6.3V/10μF(Ceramic)
7
L1
1 Lx
R1 : 300kΩ
VIN 6
R2 : 240kΩ
CIN
Vss 5
2 Vss
R2
CL
3 FB
R1
CFB
CE/MODE 4
L2
8
VOUT
CFB : 150pF
NOTE
The Inductor can be used only for this DC/DC converter.
Please do not use this inductor for the other reasons.
Please use B, X5R, and X7R grades in temperature characteristics for
CIN and CL capacitors.
These grade ceramic capacitors minimize capacitance-loss
as a function of voltage stress.
The output voltage can be set by adding external dividing resistors. The output voltage is determined by R1 and R2 in the equation below.
The sum of R1 and R2 is normally kept 1MΩor less. The output voltage range can be set from 0.9V to 6.0V based on the 0.8V ±2.0%
reference voltage source.
Note that when the input voltage (VIN) is less than or equal to the set output voltage, an output voltage (VOUT) higher than the input
voltage (VIN) cannot be output.
VOUT=0.8× (R1+R2)/R2
Adjust the value of the phase compensation speedup capacitor CFB so that fzfb=1/ (2×π×CFB×R1) is 10 kHz or less. It is
optimum to adjust to a value from 1kHz to 20kHbased on the components used and the board layout.
[Calculation example]
When R1=470kΩ, R2=150kΩ,
VOUT=0.8× (470k+150k)/150k=3.3V
12/27
●VOUT setting example
VOUT(V)
R1(kΩ)
R2(kΩ)
CFB(pF)
0.9
100
820
150
1.2
150
300
100
1.5
130
150
220
1.8
300
240
150
2.5
510
240
100
3.0
330
120
150
3.3
470
150
100
4.0
120
30
470
XCL205/XCL206/XCL207
Series
■OPERATIONAL DESCRIPTION
The XCL205/XCL/206/XCL207 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM
comparator, phase compensation circuit, output voltage adjustment resistors, P-channel MOSFET driver transistor, N-channel
MOSFET switching transistor for the synchronous switch, current limiter circuit, UVLO circuit with control IC, and an inductor.
(See the block diagram above.)
Using the error amplifier, the voltage of the internal voltage reference source is compared with the feedback voltage from the
VOUT pin through split resistors, R1 and R2. Phase compensation is performed on the resulting error amplifier output, to input a
signal to the PWM comparator to determine the turn-on time during PWM operation. The PWM comparator compares, in terms
of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and delivers the resulting
output to the buffer driver circuit to cause the Lx pin to output a switching duty cycle. This process is continuously performed to
ensure stable output voltage.
The current feedback circuit monitors the P-channel MOS driver transistor current for each switching operation, and modulates
the error amplifier output signal to provide multiple feedback signals. This enables a stable feedback loop even when a low ESR
capacitor such as a ceramic capacitor is used ensuring stable output voltage.
The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter.
The ramp wave circuit determines switching frequency. The frequency is fixed internally 3.0MHz. Clock pulses generated in this
circuit are used to produce ramp waveforms needed for PWM operation, and to synchronize all the internal circuits.
The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback voltage
divided by the internal split resistors, R1 and R2. When a feedback voltage is lower than the reference voltage, the output voltage
of the error amplifier is increased. The gain and frequency characteristics of the error amplifier output are fixed internally to deliver
an optimized signal to the mixer.
The current limiter circuit of the XCL205/XCL206/XCL207 series monitors the current flowing through the P-channel MOS driver
transistor connected to the Lx pin, and features a combination of the current limit mode and the operation suspension mode.
① When the driver current is greater than a specific level, the current limit function operates to turn off the pulses from the Lx
pin at any given timing.
② When the driver transistor is turned off, the limiter circuit is then released from the current limit detection state.
③ At the next pulse, the driver transistor is turned on. However, the transistor is immediately turned off in the case of an over
current state.
④ When the over current state is eliminated, the IC resumes its normal operation.
The IC waits for the over current state to end by repeating the steps ① through ③. If an over current state continues for a few
milliseconds and the above three steps are repeatedly performed, the IC performs the function of latching the OFF state of the
driver transistor, and goes into operation suspension state. Once the IC is in suspension state, operations can be resumed by
either turning the IC off via the CE/MODE pin, or by restoring power to the VIN pin. The suspension state does not mean a complete
shutdown, but a state in which pulse output is suspended; therefore, the internal circuitry remains in operation. The current limit
of the XCL205/XCL206/XCL207 series can be set at 1050mA at typical.
Depending on the state of the PC Board, latch time may become longer and latch operation may not work. In order to avoid the
effect of noise, an input capacitor is placed as close to the IC as possible.
Limit < # ms
Limit > # ms
Current Limit LEVEL
ILx
V
0mA
OU
Vss
Lx
V CE
Restart
V IN
13/27
XCL205/XCL206/XCL207 Series
■OPERATIONAL DESCRIPTION (Continued)
The short-circuit protection circuit monitors the internal R1 and R2 divider voltage from the VOUT pin (refer to FB point in the
block diagram shown in the previous page). In case where output is accidentally shorted to the Ground and when the FB point
voltage decreases less than half of the reference voltage (Vref) and a current more than the ILIM flows to the driver transistor,
the short-circuit protection quickly operates to turn off and to latch the driver transistor. For the G/F series, it does not matter
how much the current limit, once the FB voltage become less than the quarter of reference voltage (VREF), the short-circuit
protection operates to latch the Pch MOS driver transistor
In the latch state, the operation can be resumed by either turning the IC off and on via the CE/MODE pin, or by restoring
power supply to the VIN pin.
When sharp load transient happens, a voltage drop at the VOUT is propagated to the FB point through CFB, as a result, short
circuit protection may operate in the voltage higher than 1/2 VOUT voltage.
When the VIN pin voltage becomes 1.4V or lower, the P-channel output driver transistor is forced OFF to prevent false pulse
output caused by unstable operation of the internal circuitry. When the VIN pin voltage becomes 1.8V or higher, switching operation
takes place. By releasing the UVLO function, the IC performs the soft start function to initiate output startup operation. The soft
start function operates even when the VIN pin voltage falls momentarily below the UVLO operating voltage. The UVLO circuit does
not cause a complete shutdown of the IC, but causes pulse output to be suspended; therefore, the internal circuitry remains in
operation.
In PFM control operation, until coil current reaches to a specified level (IPFM), the IC keeps the P-ch MOSFET on. In this case,
on-time (tON) that the P-ch MOSFET is kept on can be given by the following formula.
tON = L×IPFM / (VIN－VOUT)
→IPFM①
In the PFM control operation, the PFM Duty Limit (DTYLIMIT_PFM) is set to 200% (TYP.). Therefore, under the condition that the
duty increases (e.g. the condition that the step-down ratio is small), it’s possible for P-ch MOSFET to be turned off even when coil
current doesn’t reach to IPFM. →IPFM②
Maximum IPFM Limit
tON
Lx
Lx
fOSC
IPFM
ILx
0mA
IPFM①
14/27
IPFM
ILx
0mA
IPFM②
XCL205/XCL206/XCL207
Series
■OPERATIONAL DESCRIPTION (Continued)
＜CL High Speed Discharge＞
The XCL205B(C,G,F)/ XCL206B(C,G,F)/ XCL207B(C,G,F) series can quickly discharge the electric charge at the output
capacitor (CL) when a low signal to the CE pin which enables a whole IC circuit put into OFF state, is inputted via the N-channel
transistor located between the LX pin and the VSS pin. When the IC is disabled, electric charge at the output capacitor (CL) is
quickly discharged so that it may avoid application malfunction. Discharge time of the output capacitor (CL) is set by the CL autodischarge resistance (R) and the output capacitor (CL). By setting time constant of a CL auto-discharge resistance value [R] and
an output capacitor value (CL) as τ(τ=C x R), discharge time of the output voltage after discharge via the N channel transistor
is calculated by the following formula.
V = VOUT(T) x e –t/τ or t=τln (VOUT(T) / V)
V : Output voltage after discharge
VOUT(T) : Output voltage
t: Discharge time,
τ: C x R
C= Capacitance of Output capacitor (CL)
R= CL auto-discharge resistance
Output Voltage Discharge Characteristics
RDCHG=300Ω(TYP.)
100
CL=10uF
CL=20uF
CL=50uF
Output Voltage (Relative Value)
100 = Setting Voltage Value
80
60
40
20
0
0
20
40
60
80
100
Discharge Time ｔ(ms)
15/27
XCL205/XCL206/XCL207 Series
■OPERATIONAL DESCRIPTION (Continued)
The operation of the XCL205/XCL206/ XCL207 series will enter into the shutdown mode when a low level signal is input to the
CE/MODE pin. During the shutdown mode, the current consumption of the IC becomes 0μA (TYP.), with a state of high
impedance at the Lx pin and VOUT pin. The IC starts its operation by inputting a high level signal to the CE/MODE pin. The input
to the CE/MODE pin is a CMOS input and the sink current is 0μA (TYP.).
●XCL205/XCL206 series - Examples of how to use CE/MODE pin
V IN
V DD
V IN
V DD
(A)
SW_CE
CE/MODE
CE/MODE
STATUS
ON
Stand-by
OFF
Operation
SW_CE
R1
SELECTED
(B)
SW_CE
R2
SW_CE
< IC inside >
< IC inside >
（A）
SELECTED
STATUS
ON
Operation
OFF
Stand-by
（B）
●XCL207 series - Examples of how to use CE/MODE pin
V IN
V DD
SW_PWM/PFM
RM1
V IN
V DD
SW_CE
RM1
SW_CE
CE/MODE
RM2
(A)
CE/MODE
SELECTED
STATUS
PWM/PFM
ON
RM2
SW_PWM/PFM
SW_PWM/PFM
*
Automatic
Switching Control
SW_CE
OFF
ON
PWM Control
OFF
OFF
Stand-by
< IC inside >
< IC inside >
(B)
（A）
（B）
Intermediate voltage can be generated by RM1 and RM2.
Please set the value of each R1, R2, RM1, RM2 from few hundreds kΩ to few
hundreds MΩ. For switches, CPU open-drain I/O port and transistor can be
used.
SW_CE
SW_PWM/PFM
SELECTED
STATUS
ON
*
Stand-by
OFF
ON
PWM Control
OFF
OFF
PWM/PFM
Automatic
Switching Control
16/27
XCL205/XCL206/XCL207
Series
■OPERATIONAL DESCRIPTION (Continued)
The XCL205/XCL206/XCL207 series (A, C type) provide 0.9ms (TYP). The XCL205/XCL206/XCL207 series (B, G, F type)
provide 0.32ms (TYP) however, when VOUT is less than 1.8V, provide 0.25ms (TYP.). Soft start time is defined as the time to
reach 90% of the output nominal voltage when the CE pin is turned on.
tSS
VCEH
0V
90% of setting voltage
VOUT
0V
■FUNCTION CHART
CE/MODE
VOLTAGE
LEVEL
OPERATIONAL STATES
XCL205
XCL206
XCL207
H Level (*1)
Synchronous
PWM Fixed
Control
Synchronous
PWM/PFM
Automatic Switching
M Level (*2)
-
-
Stand-by
Stand-by
Synchronous
PWM/PFM
Automatic Switching
Synchronous
PWM Fixed Control
Stand-by
L Level
(*2)
Note on CE/MODE pin voltage level range
(*1) H level: 0.65V < H level < 6V (for XCL205/XCL206)
H level: VIN – 0.25V < H level < VIN (for XCL207)
(*2) M level: 0.65V < M level < VIN - 1.0V (for XCL207)
(*3) L level: 0V < L level < 0.25V
17/27
XCL205/XCL206/XCL207 Series
■NOTE ON USE
1. The XCL205/XCL206/XCL207 series is designed for use with ceramic output capacitors. If, however, the potential
difference is too large between the input voltage and the output voltage, a ceramic capacitor may fail to absorb the
resulting high switching energy and oscillation could occur on the output. If the input-output potential difference is large,
connect an electrolytic capacitor in parallel to compensate for insufficient capacitance.
2. Spike noise and ripple voltage arise in a switching regulator as with a DC/DC converter. These are greatly influenced by
external component selection, such as the coil inductance, capacitance values, and board layout of external components.
Once the design has been completed, verification with actual components should be done.
3. Depending on the input-output voltage differential, or load current, some pulses may be skipped, and the ripple voltage
may increase.
4. When the difference between VIN and VOUT is large in PWM control, very narrow pulses will be outputted, and there is the
possibility that some cycles may be skipped completely.
5. When the difference between VIN and VOUT is small, and the load current is heavy, very wide pulses will be outputted and
there is the possibility that some cycles may be skipped completely.
6. With the IC, the peak current of the coil is controlled by the current limit circuit. Since the peak current increases when
dropout voltage or load current is high, current limit starts operation, and this can lead to instability. When peak current
becomes high, please adjust the coil inductance value and fully check the circuit operation. In addition, please calculate
the peak current according to the following formula:
Ipk = (VIN - VOUT) x OnDuty / (2 x L x fOSC) + IOUT
L: Coil Inductance Value
fOSC: Oscillation Frequency
7. When the peak current which exceeds limit current flows within the specified time, the built-in P-ch driver transistor turns
off. During the time until it detects limit current and before the built-in transistor can be turned off, the current for limit
current flows; therefore, care must be taken when selecting the rating for the external components such as a coil.
8. When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
9. Depending on the state of the PC Board, latch time may become longer and latch operation may not work. In order to
avoid the effect of noise, the board should be laid out so that input capacitors are placed as close to the IC as possible.
10. Use of the IC at voltages below the recommended voltage range may lead to instability.
11. This IC should be used within the stated absolute maximum ratings in order to prevent damage to the device.
12. When the IC is used in high temperature, output voltage may increase up to input voltage level at no load because of the
leak current of the driver transistor.
13. The current limit is set to 1350mA (MAX.) at typical. However, the current of 1350mA or more may flow. In case that the
current limit functions while the VOUT pin is shorted to the GND pin, when P-ch MOSFET is ON, the potential difference
for input voltage will occur at both ends of a coil. For this, the time rate of coil current becomes large. By contrast, when
N-ch MOSFET is ON, there is almost no potential difference at both ends of the coil since the VOUT pin is shorted to the
GND pin. Consequently, the time rate of coil current becomes quite small. According to the repetition of this operation,
and the delay time of the circuit, coil current will be converged on a certain current value, exceeding the amount of current,
which is supposed to be limited originally. Even in this case, however, after the over current state continues for several
ms, the circuit will be latched. A coil should be used within the stated absolute maximum rating in order to prevent damage
to the device.
①Current flows into P-ch MOSFET to reach the current limit (ILIM).
②The current of ILIM or more flows since the delay time of the circuit occurs during from the detection of the current limit to
OFF of P-ch MOSFET.
③Because of no potential difference at both ends of the coil, the time rate of coil current becomes quite small.
④Lx oscillates very narrow pulses by the current limit for several ms.
⑤The circuit is latched, stopping its operation.
②
①
③
Delay
Lx
ILIM
ILx
18/27
④
Limit > # ms
⑤
XCL205/XCL206/XCL207
Series
■NOTE ON USE (Continued)
14. In order to stabilize VIN voltage level and oscillation frequency, we recommend that a by-pass capacitor (CIN) be
connected as close as possible to the VIN & VSS pins.
15. High step-down ratio and very light load may lead an intermittent oscillation when PWM mode.
16. Please use within the power dissipation range below. Please also note that the power dissipation may change by test
conditions. The power dissipation figure shown is PCB mounted.
17. The proper position of mounting is based on the coil terminal
Pd vs Operating Temperature
Package Body Temperature vs Operating Temperature
The power loss of micro DC/DC according to the following formula:
power loss = VOUT×IOUT×((100/EFFI) – 1) (W)
VOUT：Output Voltage (V)
IOUT ：Output Current (A)
EFFI：Conversion Efficiency (%)
19/27
XCL205/XCL206/XCL207 Series
■NOTE ON USE (Continued)
18. Instructions of pattern layouts
(1) In order to stabilize VIN voltage level, we recommend that a by-pass capacitor (CIN) be connected as close as possible to the
VIN (No.6) & VSS (No.5) pins.
(2) Please mount each external component as close to the IC as possible.
(3) Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit
impedance.
(4) Make sure that the PCB GND traces are as thick as possible, as variations in ground potential caused by high ground
currents at the time of switching may result in instability of the IC.
(5) This series’ internal driver transistors bring on heat because of the output current and ON resistance of driver transistors.
(6) Please connect Lx (No.1) pin and L1 (No.7) pin by wiring on the PCB.
(7) Please connect VOUT (No.3) pin and L2 (No.8) pin by wiring on the PCB.
・XCL205/206/207
A/B/C/G types
・XCL205/206/207 F type
20/27
XCL205/XCL206/XCL207
Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Efficiency vs. Output Current
(2) Output Voltage vs. Output Current
XCL205A183AR/XCL206A183AR/XCL207A183AR
100
2.1
XCL206/XCL207(PWM/PFM)
Output Voltage:V OUT(V)
80
Efficency:EFFI(%)
XCL205A183AR/XCL206A183AR/XCL207A183AR
60
2.4V
3.6V
VIN= 4.2V
40
XCL205/XCL207
(PWM)
20
XCL/206/XCL207
(PWM/PFM)
VIN＝4.2V,3.6V,2.4V
2.0
1.9
1.8
1.7
XCL205/XCL207
(PWM)
1.6
1.5
0
0.1
1
10
100
0.1
1000
1
1000
(4) Oscillation Frequency vs. Ambient Temperature
(3) Ripple Voltage vs. Output Current
XCL205A183AR/XCL206A183AR/XCL207A183AR
XCL205A183AR/XCL206A183AR/XCL207A183A
100
3.5
Oscillation Frequency : fosc(MHz)
Ripple Voltage:Vr(mV)
100
Output Current:IOUT (mA)
Output Current:IOUT (mA)
80
60
XCL206/XCL207
(PWM/PFM)
VIN＝4.2V
3.6V
2.4V
XCL205/XCL207
(PWM)
VIN＝4.2V,3.6V,2.4V
40
20
0
0.1
1
10
100
3.4
3.3
3.2
3.1
VIN=3.6V
3.0
2.9
2.8
2.7
2.6
2.5
-50
1000
-25
Output Current:IOUT (mA)
25
50
75
100
(6) Output Voltage vs. Ambient Temperature
XCL205A183AR/XCL206A183AR/XCL207A183AR
XCL206A183AR/XCL207A183AR
40
2.1
VIN=6.0V
35
Output Voltage : V OUT (V)
4.0V
30
25
20
15
2.0V
10
5
0
-50
0
Ambient Temperature: Ta (℃)
(5) Supply Current vs. Ambient Temperature
Supply Current : IDD (μA)
10
-25
0
25
50
Ambient Temperature: Ta (℃)
75
100
2.0
1.9
VIN=3.6V
1.8
1.7
1.6
1.5
-50
-25
0
25
50
75
100
Ambient Temperature: Ta (℃)
21/27
XCL205/XCL206/XCL207 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(7) UVLO Voltage vs. Ambient Temperature
(8) CE "H" Voltage vs. Ambient Temperature
XCL205A183AR/XCL206A183AR/XCL207A183AR
XCL205A183AR/XCL206A183AR/XCL207A183AR
1.0
CE=VIN
1.5
0.9
CE "H" Voltage : VCEH (V)
UVLO Voltage : UVLO (V)
1.8
1.2
0.9
0.6
0.3
0.8
VIN=5.0V
0.7
3.6V
0.6
0.5
0.4
0.3
2.4V
0.2
0.1
0.0
0.0
-50
-25
0
25
50
75
-50
100
-25
Ambient Temperature: Ta (℃)
0
25
50
75
100
Ambient Temperature: Ta (℃)
(10) Soft Start Time vs. Ambient Temperature
(9) CE "L" Voltage vs. Ambient Temperature
XCL205A183AR/XCL206A183AR/XCL207A183AR
XCL205A183AR/XCL206A183AR/XCL207A183AR
5.0
1.0
0.8
Soft Start Time : tss (ms)
CE "L" Voltage : VCEL (V)
0.9
VIN=5.0V
0.7
3.6V
0.6
0.5
0.4
0.3
2.4V
0.2
4.0
3.0
2.0
VIN=3.6V
1.0
0.1
0.0
0.0
-50
-25
0
25
50
75
-50
100
-25
Ambient Temperature: Ta (℃)
25
XCL205B333AR/XCL206B333AR/XCL207B333AR
XCL205A183AR/XCL206A183AR/XCL207A183AR
0.9
XCL206B333
VIN=5.0V
IOUT=1.0mA
0.8
Nch on Resistance
0.6
0.5
2ch
0.4
VOUT
0.3
Pch on Resistance
0.2
0.1
1ch
CE:0.0V⇒1.0V
0.0
0
1
2
3
4
Input Voltage : VIN (V)
22/27
75
(12) Rise Wave Form
1.0
0.7
50
Ambient Temperature: Ta (℃)
(11) "Pch / Nch" Driver on Resistance vs. Input Voltage
Lx SW ON Resistance:RLxH,RLxL (Ω)
0
5
6
1ch:1V/div
2ch:1V/div
Time:
100μs /div
Time:100μs/div
100
XCL205/XCL206/XCL207
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(14) CL Discharge Resistance vs. Ambient Temperature
(13) Soft-Start Time vs. Ambient Temperature
XCL205B333AR/XCL206B333AR/XCL207B333AR
XCL205B333AR/XCL206B333AR/XCL207B333AR
600
400
CL Discharge Resistance: (Ω)
Soft Start Time : tss (μs)
500
VIN=5.0V
IOUT=1.0mA
300
200
100
0
-50
-25
0
25
50
75
100
XCL207B333
500
400
2.0V
VIN=6.0V
300
200
100
-50
4.0V
-25
0
25
50
75
100
Ambient Temperature: Ta (℃)
Ambient Temperature: Ta (℃)
(15) Load Transient Response 1
MODE：PWM/PFM Automatic Switching Control
XCL206A183AR/XCL207A183AR
XCL206A183AR/XCL207A183AR
VIN=3.6V,VOUT=1.8V
VIN=3.6V,VOUT=1.8V
IOUT=1mA ⇒ 300mA
IOUT=1mA ⇒ 100mA
1ch
1ch
VOUT
VOUT
2ch
2ch
1ch:100mA/div 2ch:50mV/div
1ch:100mA/div 2ch:50mV/div
Time:100μs/div
Time: 100μs /div
Time:100μs/div
Time:
100μs /div
XCL206A183AR/XCL207A183AR
XCL206A183AR/XCL207A183AR
VIN=3.6V,VOUT=1.8V
VIN=3.6V,VOUT=1.8V
IOUT=300mA ⇒ 1mA
IOUT=100mA ⇒ 1mA
1ch
1ch
2ch
2ch
VOUT
VOUT
1ch:100mA/div 2ch:50mV/div
1ch:100mA/div 2ch:50mV/div
Time:100μs/div
Time:
100μs /div
Time:100μs/div
Time: 100μs /div
23/27
XCL205/XCL206/XCL207 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Load Transient Response 2
MODE：PWM Control
XCL205A183AR/XCL207A183AR
XCL205A183AR/XCL207A183AR
VIN=3.6V,VOUT=1.8V
VIN=3.6V,VOUT=1.8V
IOUT=1mA ⇒ 300mA
IOUT=1mA ⇒ 100mA
1ch
1ch
2ch
2ch
1ch:100mA/div 2ch:50mV/div
1ch:100mA/div 2ch:50mV/div
Time:100μs/div
Time:
100μs /div
Time:100μs/div
Time:
100μs /div
XCL205A183AR/XCL207A183AR
XCL205A183AR/XCL207A183AR
VIN=3.6V,VOUT=1.8V
VIN=3.6V,VOUT=1.8V
1ch
IOUT=300mA ⇒ 1mA
IOUT=100mA ⇒ 1mA
1ch
2ch
2ch
1ch:100mA/div 2ch:50mV/div
Time:100μs/div
Time:
100μs /div
24/27
1ch:100mA/div 2ch:50mV/div
Time:100μs/div
Time: 100μs /div
XCL205/XCL206/XCL207
Series
■PACKAGING INFORMATION
For the latest package information go to, www.torexsemi.com/technical-support/packages
PACKAGE
OUTLINE / LAND PATTERN
THERMAL CHARACTERISTICS
CL-2025
CL-2025 PKG
CL-2025 Power Dissipation
CL-2025-02
CL-2025-02 PKG
CL-2025-02 Power Dissipation
25/27
XCL205/XCL206/XCL207 Series
■MARKING RULE
●CL-2025/CL-2025-02
① represents products series
MARK
PRODUCT SERIES
XCL205A*****-G
4
1
①
②
③
⑤
3
④
2
6
XCL205F*****-G
XCL205B*****-G
C
5
K
4
5
XCL205G*****-G
XCL205C*****-G
XCL206A*****-G
XCL206F*****-G
XCL206B*****-G
D
XCL206G*****-G
L
XCL206C*****-G
XCL207A*****-G
6
XCL207F*****-G
XCL207B*****-G
E
XCL207G*****-G
M
XCL207C*****-G
② represents type of DC/DC converters
MARK
OUTPUT VOLTAGE
(V)
XCL20*A/B/C*****
XCL20*G/F*****
0.x
1.x
2.x
3.x
4.x
F
H
K
L
M
U
V
X
Y
Z
③ represents the decimal part of output voltage
OUTPUT VOLTAGE (V)
MARK
PRODUCT SERIES
X.0
X.05
X.1
X.15
X.2
X.25
X.3
X.35
X.4
X.45
X.5
X.55
X.6
X.65
X.7
X.75
X.8
X.85
X.9
X.95
0
A
1
B
2
C
3
D
4
E
5
F
6
H
7
K
8
L
9
M
XCL20***0***-G
XCL20***A***-G
XCL20***1***-G
XCL20***B***-G
XCL20***2***-G
XCL20***C***-G
XCL20***3***-G
XCL20***D***-G
XCL20***4***-G
XCL20***E***-G
XCL20***5***-G
XCL20***F***-G
XCL20***6***-G
XCL20***H***-G
XCL20***7***-G
XCL20***K***-G
XCL20***8***-G
XCL20***L***-G
XCL20***9***-G
XCL20***M***-G
④,⑤ represents production lot number
01～09、0A～0Z、11～9Z、A1～A9、AA～AZ、B1～ZZ in order.
(G, I, J, O, Q, W excluded) Note: No character inversion used.
26/27
XCL205/XCL206/XCL207
Series
1.
The product 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 datasheet is up to date.
2.
The information in this datasheet is intended to illustrate the operation and characteristics of our
products. We neither make warranties or representations with respect to the accuracy or
completeness of the information contained in this datasheet nor grant any license to any intellectual
property rights of ours or any third party concerning with the information in this datasheet.
3.
Applicable export control laws and regulations should be complied and the procedures required by
such laws and regulations should also be followed, when the product or any information contained in
this datasheet is exported.
4.
The product is neither intended nor warranted for use in equipment of systems which require
extremely high levels of quality and/or reliability and/or a malfunction or failure which may cause loss
of human life, bodily injury, serious property damage including but not limited to devices or equipment
used in 1) nuclear facilities, 2) aerospace industry, 3) medical facilities, 4) automobile industry and
other transportation industry and 5) safety devices and safety equipment to control combustions and
explosions. Do not use the product for the above use unless agreed by us in writing in advance.
5.
Although we make continuous efforts to improve the quality and reliability of our products;
nevertheless Semiconductors are likely to fail with a certain probability. So in order to prevent personal
injury and/or property damage resulting from such failure, customers are required to incorporate
adequate safety measures in their designs, such as system fail safes, redundancy and fire prevention
features.
6.
Our products are not designed to be Radiation-resistant.
7.
Please use the product listed in this datasheet within the specified ranges.
8.
We assume no responsibility for damage or loss due to abnormal use.
9.
All rights reserved. No part of this datasheet may be copied or reproduced unless agreed by Torex
Semiconductor Ltd in writing in advance.
TOREX SEMICONDUCTOR LTD.
27/27
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