36V, 600mA Inductor Built-in Step-down “micro DC/DC” Converter
The XCL247 Series is a small (3.0mm×3.0mm, h=1.7mm) 36V, 600mA step-down DC/DC converter with an integrated control IC and coil. Integrating the coil makes for easier circuit board layout and minimizes malfunction and noise from the component and wiring layout.
The input voltage range is 3.0V to 36.0V, and the switching frequency is 1.2MHz, making it possible to supply a stable voltage with high efficiency. The output voltage can be changed from 2.8V to 6.0V using an external resistor, so the same part number can be used for multiple power lines.
By connecting a resistor and capacitance to the EN/SS terminal, it is possible to externally adjust the soft start time longer than the internal soft start.
The power good function also monitors the output voltage status. This soft start external adjustment function and power good function make it easy to configure the power supply sequence.
The built-in current limiter and thermal shutdown functions as protection functions make it safe to use.
Feature
| Input Voltage Range | 3.0V ~ 36.0V |
| Peak voltage | 46V(Applied Time≦400ms) |
| Output Voltage Range | 2.8V ~ 6.0V |
| Output Current | 600mA |
| Oscillation Frequency | 1.2MHz |
| Quiescent Current | 270μA |
| Efficiency | 86% (VIN=12V,VOUT=5V, IOUT=300mA) |
| Control Methods | F-PWM |
| Protection functions | Current Limit Thermal Shutdown |
| Functions | Soft start (external adjustment) Power Good |
| Output Capacitor | Ceramic Capacitor |
| Operating Ambient Temperature | -40℃~ 105℃ |
Typical Application Circuit
Technical Document
Packages
| Package | Number of Pins | Pcs/Reel | Package Size(mm) |
|---|---|---|---|
| DFN3030-10B | 10 | 3,000 | 3.0 x 3.0 x 1.7 |
Evaluation Board
| Series Name | Evaluation Board No. | Evaluation Board details | Evaluation Board data | Online Store |
|---|---|---|---|---|
| XCL247 | XCL247-DFN3030-10B-BB |
36V Inductor Built-in Step-Down DC/DC Converter 
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| XCL247 | Assembled Board XCL247B0K1H-EVB |
36V Step-down DC/DC 
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XCL247 Series Part Numbers
| Part number | Sample | FB Voltage | Oscillation Frequency | Packages | EDA | Online Store |
|---|---|---|---|---|---|---|
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| XCL247B0K1H2-G | 0.75V | 1.2MHz | DFN3030-10B |
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