GENERAL DESCRIPTION

The XC9290/XC9291 series are 600mA synchronous rectification DC/DC converters adopting HiSAT-COT (*) control. Due to

increasing the oscillation frequency to high frequency, coil with a size of 0.8 x 0.45 mm can be used. A 0.6 x 0.3 mm ceramic

capacitor can be used for the input capacitance (CIN) and the output capacitance (CL), realizing that the mounting area including

peripheral components can be reduced to 3.15 mm2.

Due to increasing the oscillation frequency to a high frequency, the mounting area is reduced. Additionally, an efficiency equal

to or higher than that of conventional products can realize by improving on-resistance and current consumption. Because of

these features, XC9290/XC9291 series are ideal for equipment requiring miniaturization and low-profile mounting area, and

battery-powered equipment such as mobile equipment.

Moreover, the high-speed transient response technology of the HiSAT-COT control makes it possible to minimize the

fluctuation of the output voltage for a load transient condition. This feature is optimal for applications requiring a fast response

and output voltage stability for an instantaneous load fluctuation like FPGA.

APPLICATIONS

● Smart phones / Mobile phones

● Wireless earphone / Headset

● Wearable devices

● DSC / Camcorder

● Portable game consoles

● Smartcard

● Power supply for module

● Various small power sources

■FEATURES

Input Voltage Range : 2.5V ~ 6.0V

Output Voltage Range : 0.7V ~ 3.6V (±2.0%)

Output Current : 600mA

Quiescent Current : 11μA

Oscillation Frequency : 4MHz, 6MHz

Efficiency (fOSC=4MHz) : 90.0% (VIN=3.7V,VOUT=1.8V,IOUT=200mA)

Control Methods : HiSAT-COT Control

PWM Control (XC9290)

PWM/PFM Auto (XC9291)

Protection Functions : Current Limit

Functions : Soft-Start, UVLO

CL Discharge (Type B)

Input / Output Capacitor : Ceramic Capacitor

Operating Ambient Temperature : -40℃ ~ 105℃

Package : LGA-6B01 (1.2 x 1.2 x 0.3mm)

WLP-5-08 (0.88 x 0.96 x 0.33mm)

Environmentally : EU RoHS Compliant, Pb Free