XCL221 Datasheet | Torex Semiconductor

DESCRIPTION The XCL221/XCL222 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 XCL221/XCL222 series uses synchronous rectification at an operating frequency of 1.2MHz. The XCL221/XCL222 series uses Hi SAT-COT (- ) synchronous rectification. Hi SAT-COT+PWM control (XCL221) or Hi SATCOT+automatic PWM/PFM switching control (XCL222) 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 UVLOfunction, the internal P-channel driver transistor is forced OFF when input voltage bees 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 PGND pins. The power consumption will be less than 1.0μA. (- ) Hi SAT-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 - Wearable Device - Bluetooth Module - SSD(Solid State Drive) - Mobile phone - Digital still camera - Portable game devices - FEATURES Input Voltage : 2.5V ~ 5.5V Output Voltage : 0.8V ~ 3.6V (±2.0%) Oscillation Frequency : 1.2MHz Output Current : 500m A Efficiency Control Methods : 93% (VIN=5.0V, VOUT=3.3V/200m A) : Hi SAT-COT 100% Duty Cycle PWM (XCL221) PWM/PFM (XCL222) 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...