Inductor Built-in Step-Down micro DC/DC Converters - Torex Semiconductor
Description
XCL205/XCL206/XCL207 Series
ETR28001-018a
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.
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.
■APPLICATIONS
●Mobile phones, Smart phones ●Bluetooth Headsets ●WiMAX PDAs, MIDs, UMPCs ●Portable game consoles ●Digital cameras, Camcorders ●Electronic dictionaries
■FEATURES
Ultra-Small Input Vo...
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