XCL223/XCL224 Series is Not Recommended for New Designs.
XCL223/XCL224 Series
ETR28012_005
HiSAT-COT® 0.7A Inductor Built-in Step-Down “micro DC/DC” Converters
☆Green Operation Compatible
■GENERAL DESCRIPTION
The XCL223/XCL224 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC
in one tiny package (2.25mm×1.5mm, h=0.75mm). An internal coil simplifies the circuit and enables minimization of noise and
other operational trouble due to the circuit wiring. A wide operating voltage range of 2.5V to 5.5V enables support for applications
that require an internally fixed output voltage (0.8V to 3.6V). The XCL223/XCL224 series uses synchronous rectification at an
operating frequency of 3.0MHz. The XCL223/XCL224 series uses HiSAT-COT synchronous rectification. HiSAT-COT+PWM
control (XCL223) or HiSAT-COT+automatic PWM/PFM switching control (XCL224) can be selected.
The series have a high speed soft-start as fast as 0.3ms in typical for quick turn-on. With the built-in UVLO function, the internal
P-channel driver transistor is forced OFF when input voltage becomes 2.0V or lower. When CE=”L”, the integrated CL discharge
function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge switch located
between the LX and PGND pins. The power consumption will be less than 1.0μA.
(*) HiSAT-COT is a proprietary high-speed transient response technology for DC/DC converter which was developed by Torex. It is Ideal for the
LSI's that require high precision and high stability power supply voltage.
■FEATURES
Input Voltage
Output Voltage
Oscillation Frequency
Output Current
Efficiency
■APPLICATIONS
●Note Book PC
:
:
:
:
:
:
2.5V ~ 5.5V
0.8V ~ 3.6V (±2.0%)
3.0MHz
●Tablet PC
700mA
●Mobile phone
●Wearable Device
●Optical Device
88% (VIN=5.0V, VOUT=3.3V/300mA)
HiSAT-COT
100% Duty Cycle
PWM (XCL223)
Control Methods
PWM/PFM (XCL224)
Thermal Shut Down
Current Limit Circuit (Drop)
Short Circuit Protection
Soft-Start Circuit Built-In
UVLO
Circuit Protection
Functions
:
:
CL Discharge
Output Capacitor
Operating Ambient
Temperature
:
:
Low ESR Ceramic Capacitor
-40℃~ 105℃
Package
Environmental Friendly
:
:
USP-8B04
EU RoHS Compliant, Pb Free
■ TYPICAL PERFORMANCE
CHARACTERISTICS
■TYPICAL APPLICATION CIRCUIT
XCL223A333D2/XCL224A333D2(VOUT=3.3V)
100
XCL224
V
IN
VIN
PGND
AGND
VOUT
80
60
C
IN
LX
V
OUT
V
CE
CE
CL
40
L2
L1
XCL223
20
Vin=5.0V
0
0.1
1
10
100
1000
Output Current : IOUT [mA]
1/18