XCL237/38/39/40/41/42/43/44 Series
Step-Down Micro DC/DC Converters with Integrated Inductor
Low Noise and Fast Transient Response with HiSAT-COT® control
Torex latest XCL Micro DC/DC include integrated Coils and utilise our proprietary HiSAT-COT control to deliver fast transient response and excellent voltage stability. The small package size and internal Inductor mean designers are able to implement smaller, more cost-effective DC/DC circuits, that offer superior performance, much closer to their point of load. The amount of external capacitance required can also be reduced significantly because of the fast transient response performance.
Low output voltage ripple has always been a cornerstone of Torex DC/DC design and these new families offer best in class performance. In addition, EMI is measured well below the CISPR 32 thresholds, making these Micro DC/DC Converters ideal for noise sensitive applications.
KEY ELECTRICAL PARAMETERS:
| SERIES | XCL237/38  |
XCL239/40 |
XCL241/42 |
XCL243/44 |
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| Replaces | XCL213/24 | XCL219/220 | XCL221/22 | XCL223/24 | ||
| IOUT (max) | 1.5 A | 1.0 A | 0.5 A | 0.7 A | ||
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ON Resistance (Typ.) |
P-Ch |
0.14 Ω
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0.24 Ω | 0.14 A | ||
| N-Ch | 0.10 Ω | 0.16 Ω | 0.10 A | |||
| VIN Range | 2.5 V ~ 5.5 V | |||||
| VOUT Range | 0.8 V ~ 3.6 V, selectable in 0.05 V steps, ±2.0% | |||||
| Switching Frequency | 3.0 MHz | 1.2 MHz | 3.0 MHz | |||
| Switching Operation | PWM | XCL237 | XCL239 | XCL241 | XCL243 | |
| PFM/PWM | XCL238 | XCL240 | XCL242 | XCL244 | ||
| Quiescent Current (Typ.) | 25 μA | 25 μA | 15 μA | 25 μA | ||
| Standby Current (Typ.) | 0.0μA | |||||
| Protection Circuits | Current Limit with Short Circuit protection and Thermal Shutdown (150 oC) | |||||
| Other Features | Soft-start, UVLO and CL Discharge | |||||
| Amb. Op. Temp. Range | -40 ~ 105 ºC | |||||
| Package | USP-9B01 | CL-2025-02 | USP-8B04 | |||
| Dimensions (mm) | 3.2 x 2.5 x 1.0 | 2.5 x 2.0 x 1.04 | 2.25 × 1.5 x 0.75 | |||
PACKAGES
USP-9B01
3.2 x 2.5 x 1.0mm
CL-2025-02
2.5 x 2.0 x 1.04mm
USP-8B04
2.25 x 1.5 x 0.75mm
TYPICAL APPLICATION CIRCUITS
USP-9B01
CL-2025-02
USP-8B04
EFFICIENCY vs. OUTPUT CURRENT
CIN & CL=10 μF (GRM188C81A106KA73)
CIN= 4.7 μF (GRM188C81A475ME11)
CL=10 μF (GRM188C81A106KA73)
LOAD TRANSIENT RESPONSE
VIN=5.0V, IOUT=10 mA↔1000 mA (tr, tf=5 μs)
CIN & CL=10 μF (GRM188C81A106KA73D)
VIN=3.8V, IOUT=1 mA↔500 mA (tr, tf=1 μs)
CIN= 4.7 μF (GRM188C81A475ME11)
CL=10 μF (GRM188C81A106KA73)
LOWER NEAR MAGNETIC FIELD AND EMI
| DC/DC + COIL XC9288 3MHz |
micro DC/DC XCL240 3MHz |
micro DC/DC XCL242 1.2MHz |
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| Evaluation Board |
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| 30MHz ~ 1GHz Near Magnetic Field |
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| CISPR32 (10m) Radiation Noise |
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APPLICATION EXAMPLES
12 V / 24 V INPUT, EXAMPLE OF MULTIPLE POWER SUPPLIES
5V INPUT, EXAMPLE OF MULTIPLE POWER SUPPLIES
For further examples, click the images for more information.
5.0V POL SOLUTIONS
LI-ION BATTERY SOLUTIONS
12V/24V POL SOLUTIONS
