TOREX XCL205, XCL206, XCL207 User Manual

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(

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V

XCL205/XCL206/XCL207

Series

ETR2801-010

Inductor Built-in Step-Down “micro DC/DC” Converters

☆GreenOperation 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

4.0V in increments of 0.05V. The device is operated by 3.0MHz, and includes 0.42ΩP-channel driver transistor and 0.52Ω
N-channel 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 the
automatic 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)/XCL206B(G)/XCL207B(G) series provide short-time turn-on by the soft start function
internally set in 0.25 ms (TYP). XCL205B(C,G) /XCL206 B(C,G) / XCL207B(C,G) integrate C
enables the electric charge stored at the output capacitor CL to be discharged via the internal auto-discharge switch located
between the L
of this function.

■APPLICATIONS

●Mobile phones, Smart phones

●Bluetooth Headsets

●WiMAX PDAs, MIDs, UMPCs

●Portable game consoles

●Digital cameras, Camcorders

●Electronic dictionaries

■TYPICAL APPLICATION CIRCUIT

and VSS pins. When the devices enter stand-by mode, output voltage quickly returns to the VSS level as a result

X

XCL205/206/207 Series

L1

(XCL20xG:1.8V～6.0V). Output voltage is internally set in a range from 0.8V to

auto discharge function which

L

■FEATURES

Ultra Small : 2.5mm×2.0mm, H=1.0mm

Input Voltage : 2.0V ~ 6.0V(A/B/C Type)

1.8V ~ 6.0V(G Type)

Output Voltage : 0.8V ~ 4.0V (+2.0%)

High Efficiency : 90% (VIN=4.2V, V

OUT

=3.3V)

Output Current : 600mA

Oscillation Frequency : 3.0MHz (+15%)

Maximum Duty Cycle
Capacitor
CE Function

Protection Circuits

: 100%
: Low ESR Ceramic
: Active High
Soft-Start Circuit Built-In

C

High Speed Auto Discharge

L

:Current Limiter Circuit Built-In

(Constant Current & Latching)

Control Methods : PWM (XCL205)

PWM/PFM Auto (XCL206)

PWM/PFM Manual (XCL207)

Operating Ambient Temperature
Environmentally Friendly

: -40℃～+85℃
: EU RoHS Compliant, Pb Free

■TYPICAL PERFORMANCE

CHARACTERISTICS

XCL205A333xx/XCL206A333xx/XCL207A333xx

100

XCL206/XCL207(PWM /PF M

L

X

CL

10μF

600mA

* “L1 and L

”, and “L2 and V

X

ss

V

OUT

(TOP VIEW)

VIN

Vss

CE/MODE

L2

” is connected by wiring.

OUT

CIN

4.7μF

80

60

VIN= 5.5V

5.0V

40

4.2V

Efficency:EFF I( %

20

0

0.1 1 10 100 1000

Output Current:I

XCL205/XCL207

PWM

(mA)

OUT

VOUT=3.3V

1/25

XCL205/XCL206/XCL207

Series

■PIN CONFIGURATION

L1

7

1

6

V

IN

5

V

ss

CE/MODE

4

8

L2

(BOTTOM VIEW)

Lx

2 V ss

3 V

OUT

* It should be connected the V

* 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.

SS pin (No. 2 and 5) to the GND pin.

■PIN ASSIGNMENT

PIN NUMBER PIN NAME

1 Lx Switching Output

2,5 VSS Ground

3 V

Output Voltage

OUT

4 CE / MODE Chip Enable & Mode Switch
6 VIN Power Input
7 L1
8 L2

FUNCTION

Inductor Electrodes

■PRODUCT CLASSIFICATION

●Ordering Information

XCL205①②③④⑤⑥-⑦
XCL206①②③④⑤⑥-⑦
XCL207①②③④⑤⑥-⑦

DESIGNATOR ITEM SYMBOL DESCRIPTION

①

②③

④ Oscillation Frequency

(*1)

⑤⑥-⑦

(*1)

The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.

(*2)

When other output voltages are needed, please contact your local Torex sales office for more information.

Output voltage range is 0.8~4.0V.

(*1)

Fixed PWM control

(*1)

PWM / PFM automatic switching control

(*1)

Manual Mode Selection Pin (Semi-custom)

Functions selection
(All CE active high)

A
B
C
G

VIN≧2.0V, No C

VIN≧2.0V, C

VIN≧2.0V, C

VIN≧1.8V, C

10 1.0V
12 1.2V
14 1.4V
15 1.5V

1K 1.75V

Output Voltage

(*2)

18 1.8V
19 1.9V
25 2.5V
28 2.8V
2L 2.85V
30 3.0V
33 3.3V

3 3.0MHz

Package

(Order Unit)

AR-G CL-2025 (3,000/Reel)

auto discharge, Standard soft-start

L

auto discharge, High speed soft-start

L

auto discharge, Standard soft-start

L

auto discharge, High speed soft-start

L

2/25

XCL205/XCL206/XCL207

■BLOCK DIAGRAM

●XCL205 / XCL206 / XCL207 series A Type

L2 L1

VOUT

VIN

CFB

R2

Error Amp.

FB

R1

VSHORT

Vref with
Soft Start,
CE

V

SS

UVLO

R3

R4

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.

●XCL205 / XCL206 / XCL207 / XCL205 / XCL206 / XCL207 series B/C/G Type

L2 L1

VOUT

VIN

CFB

R2

Error Amp.

FB

R1

Vref with
Soft Start,
CE

V

SS

UVLO

R3

R4

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.

Phase
Compensation

VSHORT

PWM/PFM
Selector

UVLO Cmp

Phase
Compensation

PWM/PFM
Selector

UVLO Cmp

Inductor

PWM
Comparator

Inductor

PWM
Comparator

Current Feedback
Current Limit

Logic

Synch
Buffer
Drive

Ramp Wave
Generator
OSC

CE/MODE
Control
Logic

Current Feedback
Current Limit

Logic

Synch
Buffer
Drive

Ramp Wave
Generator
OSC

CE/MODE
Control
Logic

Lx

VSS

CE/MODE

Lx

VSS

CE/

CE/MODE

Series

■ABSOLUTE MAXIMUM RATINGS

PAR AMETER SYMBOL RATINGS UNITS

VIN Pin Voltage VIN V

LX Pin Voltage VLX V

V

Pin Voltage V

OUT

V

OUT

CE/MODE Pin Voltage VCE V

LX Pin Current ILX ±1500 mA

Power Dissipation Pd 1000*1 mW

Operating Ambient Temperature Topr - 40 ~ + 85 ℃

Storage Temperature Tstg - 40 ~ + 105 ℃

*1: The power dissipation figure shown is PCB mounted (40mm×40mm, t=1.6mm, Glass Epoxy FR-4).

Please refer to page 16 for details.

- 0.3 ~VSS +6.5 V

SS

- 0.3 ~ VIN + 0.3≦VSS+6.5 V

SS

- 0.3 ~VSS +6.5 V

SS

- 0.3 ~VSS +6.5 V

SS

Ta = 2 5℃

3/25

XCL205/XCL206/XCL207

Series

■ELECTRICAL CHARACTERISTICS

●XCL205Axx3AR/XCL206Axx3AR/XCL207Axx3AR, f

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS

Output Voltage V

OUT

When connected to external components,
V

=5.0V, I

IN=VCE

Operating Voltage Range VIN 2.0 - 6.0 V ①

V

Maximum Output Current I

UVLO Voltage V

Supply Current (XCL205) - 46 65

Supply Current (XCL206, XCL207)

Stand-by Current I

Oscillation Frequency f

(*12)

(*12)

PFM Switching Current

PFM Duty Limit

Maximum Duty Cycle

Minimum Duty Cycle

Efficiency

(*2)

Lx SW "H" ON Resistance 1 R
Lx SW "H" ON Resistance 2 R

Lx SW "L" ON Resistance 1 R
Lx SW "L" ON Resistance 2 R

Lx SW "H" Leakage Current

Lx SW "L" Leakage Current

Current Limit

(*10)

I

Output Voltage

Temperature Characteristics

CE "H" Voltage V

CE "L" Voltage V

PWM "H" Level Voltage

(*13)

OUTMAX

UVLO

IDD V

STB

OSC

I

PFM

DTY

LIMIT_PFM

D

MAX

D

MIN

EFFI

LｘH

LｘH

LｘL

(*5)

(*5)

V

LｘL

I

LEAKH

I

LEAKL

LIM

△

V

OUT

(V

・△

OUT

CEH

CEL

PWMH

VIN=VCE=5.0V, V

VIN=5.0V, VCE=0V, V

To pr )

IN=VOUT(T)

When connected to external components

V

CE=VIN,VOUT

Voltage which Lx pin holding “L” level

=5.0V, V

IN=VCE

When connected to external components,
V

IN=VOUT(T)

When connected to external components,
V

IN=VOUT(T)

= VIN= V

V

CE

=5.0V, V

V

IN=VCE

V

IN=VCE

=5.0V, V

When connected to external components,
V

CE=VIN＝VOUT (T)

VIN=VCE=5.0V, V
VIN=VCE=3.6V, V
VIN=VCE=5.0V
VIN=VCE=3.6V,

VIN=V
VIN=V

I

/

-40℃≦Topr≦85℃
V
Voltage changes Lx to “H” level
V
Voltage changes Lx to “L” level

=5.0V, VCE=0V, LX=0V - 0.01 1.0 μA ⑤

OUT

=5.0V, VCE=0V, LX= 5.0V - 0.01 1.0 μA ⑤

OUT

=30mA

OUT

=0V, Applied voltage to VCE,

OUT

=0V, Applied voltage to VCE,

OUT

When connected to external components,
I

=1mA

OUT

frequency becomes 2550kHz≦f

PWM "L" Level Voltage

(*13)

V

PWML

When connected to external components,
I

=1mA

OUT

frequency becomes f
CE "H" Current I
CE "L" Current I

Soft Start Time tSS

Latch Time t

Short Protection

Threshold Voltage

VIN=VCE=5.0V, V

CEH

VIN=5.0V, VCE=0V, V

CEL

When connected to external components,

V

=0V→VIN , I

CE

V

=

VCE=5.0V,

LAT

IN

Short Lx at 1Ω resistance

Sweeping V

V

SHORT

1Ω resistance, V

level within 1ms

Inductance Value L Test frequency=1MHz - 1.5 - μH

Allowed Inductor Current IDC ΔT=40℃ - 1000 - 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
*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 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”=V

IN~VIN-1.2V, “L”=+0.1V~-0.1V

*12: IPFM and DTY
*13: VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)

IN - Lx pin measurement voltage) / 100mA

are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)

LIMIT_PFM

4/25

=3.0MHz, Ta=25℃

OSC

=30mA

OUT

+2.0V, VCE=1.0V

=0V,

OUT=VOUT(T)

OUT=VOUT(T)

+2.0V,VCE=1.0V, I

+2.0V, VCE=VIN , I

+1.0V, I

OUT(T)

(*4)

(*4)

OUT

OUT=VOUT (T)

OUT=VOUT (T)

+1.2V, I

OUT

=0V, ILX=100mA

OUT

=0V, ILX=100mA

OUT

- 0.45 0.66 Ω -

- 0.52 0.77 Ω -

OUT=VOUT(T)

(*9)

(*1, *11)

×1.1V

×1.1V - 0 1.0 μA ②

=100mA

OUT

=1mA

OUT

=1mA - 200 300 % ①

×0.9V 100 - - % ③

×1.1V - - 0 % ③

= 100mA

×0.9V

(*3)

- 0.35 0.55 Ω ④

(*3)

- 0.42 0.67 Ω ④

(*8)

900 1050 1350 mA ⑥

<E-1> <E-2> <E-3> V ①

600 - - mA ①

1.00 1.40 1.78 V ③

- 21 35

μA ②

2550 3000 3450 kHz ①

<E-4> <E-5> <E-6> mA ⑩

- <E-7> - % ①

- ±100 - ppm/ ℃ ①

(*11)

(*11)

(*6),

Voltage which oscillation

OSC

(*6)

, Voltage which oscillation

OUT

V

OUT

, VIN=VCE=5.0V, Short Lx at

OUT

＜2550kHz

OSC

=0V - 0.1 - 0.1 μA ⑤

OUT

=0V - 0.1 - 0.1 μA ⑤

OUT

=1mA

=0.8×V

voltage which Lx becomes “L”

OUT

OUT

(*7)

(T)

≦3450kHz

(*13)

0.65 - V

V

- 0.25 V ③

SS

(*13)

- - VIN - 1.0 V ①

V

-

IN

0.25

- - V ①

0.5 0.9 2.5 ms ①

1.0 - 20 ms ⑦

<E-8> <E-9> <E-10> V ⑦

V ③

IN

CIRCUIT

■ELECTRICAL CHARACTERISTICS (Continued)

●XCL205Bxx3AR/XCL206Bxx3AR/XCL207Bxx3AR, f

=3.0MHz, Ta=25℃

OSC

XCL205/XCL206/XCL207

Series

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS

Output Voltage

Operating Voltage Range

Maximum Output Current

UVLO Voltage

Supply Current (XCL205) - 46 65

Supply Current (XCL206, XCL207)

Stand-by Current

Oscillation Frequency

(*12)

(*12)

PFM Switching Current

PFM Duty Limit

Maximum Duty Cycle D

Minimum Duty Cycle D

Efficiency

(*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

Current Limit

(*10)

Output Voltage

Temperature Characteristics

CE "H" Voltage

CE "L" Voltage

PWM "H" Level Voltage

PWM "L" Level Voltage

(*13)

(*13)

CE "H" Current
CE "L" Current

Soft Start Time

Latch Time

Short Protection

Threshold Voltage

CL Discharge

Inductance Value

V

OUT

V

IN

I

OUTMAX

V

UVLO

I

DD

I

STB

f

OSC

I

PFM

DTY

LIMIT_PFM

MAX

MIN

EFFI

R

LｘH

R

LｘH

R

LｘL

R

(*5)

LｘL

I

LEAKH

I

LIM

△

V

OUT

(V

・△

OUT

V

CEH

V

CEL

V

PWMH

V

PWML

I

CEH

I

CEL

t

SS

t

LAT

V

SHORT

R

DCHG

L

Allowed Inductor Current IDC

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)= (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 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 DTY
*13: VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)

are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)

LIMIT_PFM

When connected to external components,
V

=5.0V, I

IN=VCE

V

IN=VOUT(T)

When connected to external components
V

CE=VIN,VOUT

Voltage which Lx pin holding “L” level

V

=5.0V, V

IN=VCE

V

=5.0V, VCE=0V, V

IN

When connected to external components,
V

=V

IN

OUT(T)

When connected to external components,
V

=V

IN

OUT(T)

V

= V

CE=VIN

V

=5.0V, V

IN=VCE

V

=5.0V, V

IN=VCE

=30mA

OUT

+2.0V, VCE=1.0V

=0V,

OUT=VOUT(T)

OUT=VOUT(T)

+2.0V,VCE=1.0V, I

+2.0V, VCE = VIN , I

+1.0V, I

OUT(T)

OUT

OUT=VOUT (T)

OUT=VOUT (T)

When connected to external components,
V

CE=VIN＝VOUT (T)

V

/

To p r)

=5.0V, V

IN=VCE

V

=3.6V, V

IN=VCE

V

=5.0V

IN=VCE

V

= 3.6V

IN=VCE

V

IN=VOUT

V

=5.0V, V

IN=VCE

I

=30mA

OUT

-40℃≦Topr≦85℃
V

=0V, Applied voltage to VCE,

OUT

Voltage changes Lx to “H” level
V

=0V, Applied voltage to VCE,

OUT

Voltage changes Lx to “L” level
When connected to external components,
I

=1mA

OUT

frequency becomes 2550kHz≦f
When connected to external components,
I

=1mA

OUT

frequency becomes f
V

=5.0V, V

IN=VCE

V

=5.0V, VCE=0V, V

IN

When connected to external components,
V

=0V→VIN , I

CE

V

=5.0V, V

IN=VCE

Short Lx at 1Ω resistance
Sweeping V
1Ω resistance, V
level within 1ms

V

=5.0V, LX=5.0V, VCE=0V, V

IN

+1.2V, I

OUT

=0V, ILX=100mA

OUT

=0V, ILX=100mA

OUT

(*4)

(*4)

=5.0V, VCE =0V, LX=0V

OUT=VOUT (T)

(*6),

Voltage which oscillation

(*6)

, Voltage which oscillation

OUT

, VIN=VCE=5.0V, Short Lx at

OUT

＜2550kHz

OSC

=0V

OUT

=0V

OUT

=1mA

=0.8×V

OUT

voltage which Lx becomes “L”

OUT

Test frequency =1MHz

ΔT=40℃

×1.1V

×1.1V

=100mA

OUT

=1mA

OUT

=1mA

×0.9V
×1.1V

=100mA

×0.9V

(*11)

(*11)

OSC

OUT(T)

(*7)

=Open

OUT

(*9)

(*1, *11)

(*3)

(*3)

(*8)

≦3450kHz

(*13)

<E-1> <E-2> <E-3> V ①

2.0 - 6.0 V ①

600 - - mA ①

1.00 1.40 1.78 V ③

- 21 35

μA ②

- 0 1.0 μA ②

2550 3000 3450 kHz ①

<E-4> <E-5> <E-6> mA ⑩

- 200 300 % ①

100 - - % ③

- - 0 % ③

- <E-7> - % ①

- 0.35 0.55 Ω ④

- 0.42 0.67 Ω ④

- 0.45 0.66 Ω -

- 0.52 0.77 Ω -

- 0.01 1.0 μA ⑨

900 1050 1350 mA ⑥

- ±100 - ppm/ ℃ ①

0.65 - V

V

SS

(*13)

- - VIN - 1.0 V ①

V

IN

0.25

- 0.25 V ③

-

- - V ①

V ③

IN

- 0.1 - 0.1 μA ⑤

- 0.1 - 0.1 μA ⑤

- <E-11> <E-12> ms ①

1.0 - 20 ms ⑦

<E-8> <E-9> <E-10> V ⑦

200 300 450 Ω ⑧

- 1.5 - μH

- 1000 - mA

CIRCUIT

5/25

XCL205/XCL206/XCL207

Series

■ELECTRICAL CHARACTERISTICS (Continued)

●XCL205Cxx3AR/XCL206Cxx3AR/XCL207Cxx3AR, f

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS

Output Voltage V

Operating Voltage Range

Maximum Output Current

UVLO Voltage V

Supply Current (XCL205) - 46 65

Supply Current (XCL206, XCL207)

Stand-by Current I

Oscillation Frequency

PFM Switching Current

PFM Duty Limit

(*12)

(*12)

DTY

OUT

V

IN

I

OUTMAX

UVLO

I

DD

STB

f

OSC

I

PFM

LIMIT_PFM

Maximum Duty Cycle MAXDTY VIN = VCE =5.0V, V

Minimum Duty Cycle MINDTY VIN = VCE =5.0V, V

Efficiency

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

Current Limit

Output Voltage

Temperature Characteristics

CE "H" Voltage V

CE "L" Voltage V

PWM "H" Level Voltage

PWM "H" Level Voltage

CE "H" Current I

CE "L" Current I

Soft Start Time

Latch Time

Short Protection

Threshold Voltage

CL Discharge

Inductance Value

(*2)

EFFI

R

LｘH

R

LｘH

R

LｘL

R

I

LEAKH

△

(V

・△

OUT

V

V

V

R

LｘL

LIM

V

OUT

CEH

CEL

PWMH

PWML

CEH

CEL

t

SS

t

LAT

SHORT

DCHG

(*5)

(*10)

I

(*13)

(*13)

L Test frequency=1MHz - 1.5 - μH-

Allowed Inductor Current IDC

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)= (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
*8: When V
*9: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.

*10: Current limit denotes the level of detection at peak of coil current.

IN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.

OUT with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.

*11: “H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
*12: IPFM and DTY

*13: VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)

are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)

LIMIT_PFM

When connected to external components,
V

= VCE =5.0V, I

IN

2.0 - 6.0 V ①

V

IN=VOUT(T)

When connected to external components
V

CE=VIN,VOUT

Voltage which Lx pin holding “L” level

V

V

IN

IN

When connected to external components,
V

IN

When connected to external components,
V

IN

+2.0V, VCE=1.0V

=VCE=5.0V, V

=5.0V, VCE=0V, V

=V

+2.0V,VCE=1.0V, I

OUT(T)

=V

+2.0V, VCE = VIN , I

OUT(T)

VCE= VIN = V

When connected to external components,
V

= VIN ＝ V

CE

VIN = VCE = 5.0V, V
VIN = VCE = 3.6V, V
VIN = VCE = 5.0V
VIN = VCE = 3.6V

VIN= V

V

I

/

OUT

Topr)

-40℃≦Topr≦85℃
V
Voltage changes Lx to “H” level
V
Voltage changes Lx to “L” level
When connected to external components,
I

OUT

=5.0V, VCE =0V, LX=0V - 0.01 1.0 μA ⑨

OUT

= VCE= 5.0V, V

IN

=30mA

=0V, Applied voltage to VCE,

OUT

=0V, Applied voltage to VCE,

OUT

(*6),

=1mA

frequency becomes 2550kHz≦f
When connected to external components,
I

OUT

=1mA

(*6)

frequency becomes f
VIN = VCE =5.0V, V
V

=5.0V, VCE = 0V, V

IN

When connected to external components,

V

=0V→VIN , I

CE

V

=5.0V, V

IN=VCE

Short Lx at 1Ω resistance

Sweeping V

1Ω resistance, V

level within 1ms

VIN = 5.0V LX = 5.0V VCE = 0V V

Δ

T=40℃

=3.0MHz, Ta=25℃

OSC

=30mA

OUT

=0V,

= V

OUT

OUT(T)

= V

OUT

+1.0V, I

OUT(T)

OUT (T)

OUT

= V

OUT

OUT (T)

= V

OUT

OUT (T)

+1.2V, I

= 0V,ILX = 100mA

OUT

= 0V,ILX = 100mA

OUT

(*4)

- 0.45 0.66 Ω -

(*4)

- 0.52 0.77 Ω -

= V

OUT

OUT (T)

(*9)

(*1, *11)

×1.1V

×1.1V - 0 1.0 μA ②

OUT(T)

=100mA

OUT

=1mA

OUT

=1mA - 200 300 % ①

×0.9V 100 - - % ③
×1.1V - - 0 % ③

= 100mA

OUT

×0.9V

(*3)

- 0.35 0.55 Ω ④

(*3)

- 0.42 0.67 Ω ④

(*8)

900 1050 1350 mA ⑥

<E-1> <E-2> <E-3> V ①

600 - - mA ①

1.00 1.40 1.78 V ③

21 35

μA ②

2550 3000 3450 kHz ①

<E-4> <E-5> <E-6> mA ⑩

- <E-7> - % ①

- ±100 - ppm/ ℃ ①

(*11)

(*11)

Voltage which oscillation

≦3450kHz

OSC

, Voltage which oscillation

＜2550kHz

OSC

= 0V - 0.1 - 0.1 μA ⑤

OUT

= 0V - 0.1 - 0.1 μA ⑤

OUT

=1mA

OUT

=0.8×V

OUT

, VIN=VCE=5.0V, Short Lx at

OUT

OUT

(*7)

voltage which Lx becomes “L”

(*13)

OUT(T)

0.65 - 6.0 V ③

- 0.25 V ③

V

SS

(*13)

- - VIN - 1.0 V ①

V

-

IN

0.25

- - V ①

0.5 0.9 2.5 ms ①

1.0 - 20 ms ⑦

<E-8> <E-9> <E-10> V ⑦

= open 200 300 450 Ω ⑧

OUT

- 1000 - mA -

CIRCUIT

6/25

XCL205/XCL206/XCL207

■ELECTRICAL CHARACTERISTICS (Continued)

●XCL205Gxx3AR/XCL206Gxx3AR/XCL207Gxx3AR, f

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS

Output Voltage V

Operating Voltage Range

Maximum Output Current

UVLO Voltage V

Supply Current (XCL205) - 46 65

Supply Current (XCL206, XCL207)

Stand-by Current I

Oscillation Frequency

PFM Switching Current

PFM Duty Limit

(*12)

(*12)

DTY

OUT

V

IN

I

OUTMAX

UVLO

I

DD

STB

f

OSC

I

PFM

LIMIT_PFM

Maximum Duty Cycle MAXDTY VIN = VCE =5.0V, V

Minimum Duty Cycle MINDTY VIN = VCE =5.0V, V

Efficiency

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

Current Limit

Output Voltage

Temperature Characteristics

CE "H" Voltage V

CE "L" Voltage V

PWM "H" Level Voltage

PWM "H" Level Voltage

CE "H" Current I
CE "L" Current I

Soft Start Time

Latch Time

Short Protection

Threshold Voltage

CL Discharge

Inductance Value

(*2)

EFFI

R

LｘH

R

LｘH

R

LｘL

R

I

△

(V

OUT

V

V

V

R

LｘL

LEAKH

LIM

V

OUT

・△

CEH

CEL

PWMH

PWML

CEH

CEL

t

SS

t

LAT

SHORT

DCHG

(*5)

(*10)

I

(*13)

(*13)

L Test frequency=1MHz - 1.5 - μH-

Allowed Inductor Current IDC

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)= (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 V

0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than V

*7: Time until it short-circuits VOUT with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
*8: When V
*9: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.

*10: Current limit denotes the level of detection at peak of coil current.
*11: “H”=V

*12: IPFM and DTY
*13: VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
*14: VIN is applied when VOUT (T) x 0.5V becomes more than VIN.

IN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.

IN~VIN-1.2V, “L”=+0.1V~-0.1V

are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)

LIMIT_PFM

When connected to external components,

V

= VCE =5.0V, I

IN

1.8 - 6.0 V ①

V

IN=VOUT(T)

When connected to external components

V

CE=VIN,VOUT(T)

Voltage which Lx pin holding “L” level

V

IN

+2.0V, VCE=1.0V

=VCE=5.0V, V

VIN =5.0V, VCE=0V, V

When connected to external components,

=V

V

IN

+2.0V,VCE=1.0V, I

OUT(T)

When connected to external components,

=V

V

IN

+2.0V, VCE = VIN , I

OUT(T)

VCE= VIN = V

When connected to external components,

V

= VIN ＝ V

CE

VIN = VCE = 5.0V, V
VIN = VCE = 3.6V, V
VIN = VCE = 5.0V
VIN = VCE = 3.6V

VIN= V

V

I

/

OUT

Topr)

-40℃≦Topr≦85℃

V

Voltage changes Lx to “H” level

V

Voltage changes Lx to “L” level

When connected to external components,

I

OUT

=5.0V, VCE =0V, LX=0V - 0.01 1.0 μA ⑨

OUT

= VCE= 5.0V, V

IN

=30mA

=0V, Applied voltage to VCE,

OUT

=0V, Applied voltage to VCE,

OUT

(*6),

=1mA

frequency becomes 2550kHz≦f

When connected to external components,

I

OUT

=1mA

(*6)

frequency becomes f
VIN = VCE =5.0V, V

VIN =5.0V, VCE = 0V, V

When connected to external components,

V

=0V→VIN , I

CE

V

=5.0V, V

IN=VCE

Short Lx at 1Ω resistance

Sweeping V

1Ω resistance, V

level within 1ms

VIN = 5.0V LX = 5.0V VCE = 0V V

Δ

T=40℃

=3.0MHz, Ta=25℃

OSC

=30mA

OUT

(*9)

(*14)

×0.5V

OUT(T)

OUT (T)

,

= V

OUT

+1.0V, I

OUT

OUT

OUT

OUT

(*4)

- 0.45 0.66 Ω -

(*4)

- 0.52 0.77 Ω -

OUT

×1.1V

OUT(T)

= V

OUT

= V

= V

+1.2V, I

×1.1V - 0 1.0 μA ②

OUT(T)

=100mA

OUT

=1mA

OUT

=1mA - 200 300 % ①

OUT

×0.9V 100 - - % ③

OUT (T)

×1.1V - - 0 % ③

OUT (T)

= 100mA

OUT

= 0V,ILX = 100mA
= 0V,ILX = 100mA

= V

OUT (T)

×0.9V

(*1, *11)

(*3)

- 0.35 0.55 Ω ④

(*3)

- 0.42 0.67 Ω ④

(*8)

900 1050 1350 mA ⑥

<E-1> <E-2> <E-3> V ①

600 - - mA ①

1.00 1.40 1.78 V ③

- 21 35

μA ②

2550 3000 3450 kHz ①

<E-4> <E-5> <E-6> mA ⑩

- <E-7> - % ①

- ±100 - ppm/ ℃ ①

(*11)

(*11)

Voltage which oscillation

≦3450kHz

OSC

, Voltage which oscillation

＜2550kHz

OSC

= 0V - 0.1 - 0.1 μA ⑤

OUT

= 0V - 0.1 - 0.1 μA ⑤

OUT

=1mA

OUT

=0.8×V

OUT

, VIN=VCE=5.0V, Short Lx at

OUT

OUT

(*7)

voltage which Lx becomes “L”

(*13)

OUT(T)

0.65 - 6.0 V ③

- 0.25 V ③

V

SS

(*13)

- - VIN - 1.0 V ①

V

-

IN

0.25

- - V ①

- <E-11> <E-12> ms ①

1.0 - 20 ms ⑦

<E-8> <E-9> <E-10> V ⑦

= open 200 300 450 Ω ⑧

OUT

- 1000 - mA -

IN minus 1.0V and equal to or greater than VCEH.

Series

CIRCUIT

IN minus

7/25

XCL205/XCL206/XCL207

Series

■ELECTRICAL CHARACTERISTICS (Continued)

●Output Voltage

NOMINAL

OUTPUT

VOLTAGE

V

MIN TYP MAX

OUT(T)

1.00 0.980 1.000 1.020

1.20 1.176 1.200 1.224

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

<E-1> <E-2> <E-3>

V

(V)

OUT

●PFM Switching Current

NOMINAL OUTPUT

1.2V＜V

VOLTAGE

V

≦1.2Ｖ

OUT(T)

OUT(T)

1.8V≦V

≦1.75Ｖ

OUT(T)

I

(mA)

PFM

<E-4> <E-5> <E-6>

MIN TYP MAX

190 260 350

180 240 300

170 220 270

●Efficiency ●Short Protection Threshold Voltage

NOMINAL

OUTPUT

VOLTAGE

V

OUT(T)

1.00 79

1.20 82

1.40 83

1.50 84

1.75

1.80

1.90

2.50

2.80

2.85

3.00

3.30

●Soft Start Time (XCL20xB, XCL20xG)

NOMINAL OUTPUT

0.8V≦V

1.8V≦V

Efficiency(%)

XCL205/206/207

<E-7>

3.0MHz

85

86

VOLTAGE

≦1.75Ｖ

OUT(T)

≦4.0Ｖ

OUT(T)

NOMINAL

OUTPUT

VOLTAGE

V

MIN TYP MAX MIN TYP MAX

OUT(T)

1.00 0.375 0.500 0.625 0.188 0.250 0.313

1.20 0.450 0.600 0.750 0.225 0.300 0.375

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

tSS(ms)

<E-11> <E-12>

TYP MAX

0.25 0.4

0.32 0.5

<E-8> <E-9> <E-10> <E-8> <E-9> <E-10>

XCL205/206/207A,B,C XCL205/206/207G

V

SHORT

(V)

8/25