Summary of XDL601/02 – 5.5V, 1.5A HI-SAT COT SYNCHRONOUS BUCK MICRO DC/DC WITH INTEGRATED COIL
The XDL601/02 are ultra-compact 1.5A synchronous step-down Micro DC/DC converters with an integrated inductor and Torex Hi-SAT COT control for very fast transient response and stable frequency. They operate from 2.5V–5.5V with outputs 0.8V–3.3V (±2%); XDL601 uses Hi-SAT COT with fixed PWM at 3.0MHz, while XDL602 auto-switches PWM/PFM for light-load efficiency. Features include AEC-Q100 Grade 2 (-40°C to 105°C), thermal shutdown, soft-start, UVLO, and a DFN3625-11B package with wettable flanks, enabling >50% PCB area savings and low EMI.
Parts used in the XDL601/02 Project:
- XDL601 micro DC/DC converter (DFN3625-11B package)
- XDL602 micro DC/DC converter
- Integrated inductor (built into XDL601/02)
The XDL601/02 are ultra-small, 1.5A, synchronous step-down Micro DC/DC Converters with integrated inductor and high-speed transient response. The superfast load transient performance is due to Torex’s innovative Hi-SAT COT control method, which, when compared to standard Constant On-Time (COT) control also provides less fluctuation in oscillation frequency against load and input voltage.
The XDL601/02 total solution size is only 30mm2 and is optimised for space constrained applications such as sensors, cameras, small control modules, telematics, infotainment & HMI. The XDL601 operates with Hi-SAT COT plus fixed PWM mode with a 3.0MHz switching frequency whereas the XCL602 automatically switches between PWM and PFM (pulse-skipping) mode to maximize efficiency at lighter loads.
The input voltage range is 2.5V to 5.5V and the output voltage range is 0.8V to 3.3V (accuracy ±2.0%). The operating ambient temperature range is -40°C ~ 105°C and this series is AEC-Q100 Grade 2 compliant. In addition, Thermal shutdown, integral soft-start and a built-in UVLO function are also included for added protection.
The XDL601 is available in a small DFN3625-11B (3.6 x 2.5 x 1.6mm) package which has Wettable flanks.
Key Features
- Operates from 2.5V to 5.5V
- Up to 1.5A Output Current
- Output Voltages from 0.8V to 3.3V
- Hi-SAT COT with PWM Control or PWM/PFM Auto-Switching
- AEC-Q100 qualified (-40˚C ~ +105˚C)
Key Benefits
- Integrated Coil Structure
- More than 50% of PCB Area Savings
- Minimized Radiated Noise (EMI)
- High Efficiency at 3.0MHz Operation
- 93% (at VIN=5.0V, VOUT=3.3V/500mA)
- Enhanced COT Technology
- Fast Transient Response
- Stable Frequency Operation
- Superior Load Regulation
- High Reliability
- Exposed Flanks Package
- High Thermal Performance
Read more: XDL601/02 – 5.5V, 1.5A HI-SAT COT SYNCHRONOUS BUCK MICRO DC/DC WITH INTEGRATED COIL
- What input voltage range do the XDL601/02 support?
They operate from 2.5V to 5.5V. - What output current can the XDL601/02 provide?
They provide up to 1.5A output current. - What output voltage range is available?
Output voltages range from 0.8V to 3.3V with ±2.0% accuracy. - What control methods do XDL601 and XDL602 use?
XDL601 uses Hi-SAT COT with fixed PWM at 3.0MHz; XDL602 automatically switches between PWM and PFM. - What package is the XDL601 available in?
XDL601 is available in a DFN3625-11B (3.6 x 2.5 x 1.6mm) package with wettable flanks. - What temperature range and qualification do these parts have?
They are AEC-Q100 Grade 2 qualified and operate from -40°C to 105°C. - What protection features are included?
They include thermal shutdown, integral soft-start, and a built-in UVLO function. - What are the efficiency and switching frequency characteristics?
They operate at 3.0MHz; efficiency can reach 93% (VIN=5.0V, VOUT=3.3V, 500mA). - What benefits does the integrated coil offer?
Integrated coil structure saves more than 50% PCB area and minimizes radiated noise (EMI).
