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XCL219/XCL220Series

HiSAT-COT ® Control 1.0A Inductor Built-in Step-Down “micro DC/DC” Converters

☆Green Operation Compatible

ETR28010-002

■GENERAL DESCRIPTION

The XCL219/XCL220 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control

IC in one tiny package (2.0mm×2.5mm, h=1.0mm). 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 XCL219/XCL220 series uses synchronous

rectification at an operating frequency of 3.0MHz. The XCL219/XCL220 series uses HiSAT-COT (*) synchronous rectification.

HiSAT-COT+PWM control (XCL219) or HiSAT-COT+automatic PWM/PFM switching control (XCL220) 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=Low, 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 VSS 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.

■APPLICATIONS

●Note Book PC

●Tablet PC

●SSD(Solid State Drive)

●Mobile phone

●Digital still camera

●Portable game machine

■ TYPICAL PERFORMANCE

CHARACTERISTICS

■TYPICAL APPLICATION CIRCUIT

■FEATURES

Input Voltage

: 2.5V ~ 5.5V

Output Voltage

: 0.8V ~ 3.6V(±2.0%)

Oscillation Frequency

: 3.0MHz

Output Current

: 1.0A

Efficiency

: 93% (VIN=5.0V, VOUT=3.3V/300mA)

Control Methods

: HiSAT-COT

100% Duty Cycle

HiSAT-COT+PWM (XCL219)

HiSAT-COT+PWM/PFM (XCL220)

Circuit Protection

: Thermal Shut Down

Current Limit Circuit (Drop)

Short Circuit Protection (Latch)

Functions

: Soft-start Circuit Built-in

UVLO

CL Discharge

Output Capacitor

: Low ESR Ceramic Capacitor

Operating Ambient Temperature : -40℃~ +105℃

Package

: CL-2025-02

Environmental Friendly

: EU RoHS Compliant, Pb Free

XCL219/XCL220 (VOUT=3.3V)

1.0A

CIN

4.7μF

CL

10μF

7

8

1

2

3

4

5

6

PGND

VIN

Lx

CE

VOUT

AGND

0

20

40

60

80

100

0.1

1

10

100

1000

Output Current : I

OUT (mA)

XCL219

XCL220

V

IN=5.0V