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Torex Semiconductor

XCL206 Datasheet Preview

XCL206 Datasheet

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

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XCL205/XCL206/XCL207Series
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ETR2801-005b
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. 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 0.42ΩP-channel driver transistor and 0.52ΩN-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/XCL206B/XCL207B series provide short-time turn-on by the soft start function internally set in 0.25 ms
(TYP). XCL205B(C) /XCL206 B(C) / XCL207B(C) 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.
APPLICATIONS
Mobile phones, Smart phones
Bluetooth Headsets
WiMAX PDAs, MIDs, UMPCs
Portable game consoles
Digital cameras, Camcorders
Electronic dictionaries
FEATURES
Ultra Small
: 2.5mm×2.0mm, H=1.0mm
Input Voltage
: 2.0V ~ 6.0V
Output Voltage
: 0.8V ~ 4.0V (+2.0%)
High Efficiency (VOUT=1.8V)
Output Current
: 85% (TYP.)
: 600mA
Oscillation Frequency
: 3.0MHz (+15%)
Maximum Duty Cycle
: 100%
Control Methods
: PWM (XCL205)
PWM/PFM Auto (XCL206)
PWM/PFM Manual (XCL207)
High Speed Soft-Start Circuit Built-In
Current Limiter Circuit Built-In (Constant Current & Latching)
Low ESR Ceramic Capacitor Compatible
CL High Speed Auto Discharge
* Performance depends on external components and wiring on the PCB.
TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE
CHARACTERISTICS
XCL205/206/207 Series
CL
10μF
600mA
L1
LX VIN
Vss Vss
VOUT CE/MODE
L2
CIN
4.7μF
(TOP VIEW)
* “L1 and LX”, and “L2 and VOUT” is connected by wiring.
XCL205A333xx/XCL206A333xx/XCL207A333xx
100
XCL206/XCL207(PWM/PFM)
80
60
VIN= 5.5V
5.0V
40 4.2V
20
XCL205/XCL207
(PWM)
VOUT=3.3V
0
0.1
1
10 100 1000
Output Current:IOUT (mA)
1/26




Torex Semiconductor

XCL206 Datasheet Preview

XCL206 Datasheet

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

No Preview Available !

XCL205/XCL206/XCL207 Series
PIN CONFIGURATION
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L1
7
VIN 6
1 Lx
Vss 5
CE/MODE 4
2 Vss
3 VOUT
8
L2
* 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.
(BOTTOM VIEW)
PIN ASSIGNMENT
PIN NUMBER
1
2,5
3
4
6
7
8
PIN NAME
Lx
VSS
VOUT
CE / MODE
VIN
L1
L2
FUNCTION
Switching Output
Ground
Output Voltage
Chip Enable & Mode Switch
Power Input
Inductor Electrodes
PRODUCT CLASSIFICATION
Ordering Information
XCL205①②③④⑤⑥-G* Fixed PWM control
XCL206①②③④⑤⑥-G* PWM / PFM automatic switching control
XCL207①②③④⑤⑥-G* Manual Mode Selection Pin (Semi-custom)
DESIGNATOR
DESCRIPTION
SYMBOL
DESCRIPTION
A Low speed soft-start, No CL auto discharge
Functions selection
(All CE active high)
B High speed soft-start, CL auto discharge
②③
Output Voltage
Oscillation Frequency
C
08~40
3
Low speed soft-start, CL auto discharge
e.g. VOUT=2.8V→②=2, =8
VOUT=2.85V→②=2, =L
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
3.0MHz
Device Structure
A Control number assigned for micro DC/DC
Device Orientation
R Embossed tape, standard feed
* The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
2/26


Part Number XCL206
Description Inductor Built-in Step-Down micro DC/DC Converters
Maker Torex Semiconductor
Total Page 26 Pages
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