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Overview
| Topology | Buck Converter |
| Input voltage | 2.7-5.5 V |
| Switching frequency | 1200-3000 kHz |
| Output 1 | 3.6 V / 3 A |
| IC revision | 003 |
Description
The XC9273 series is a group of synchronous-rectification type DC/DC converters with a built-in 47mΩ P-channel MOS driver transistor and 36mΩ N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. The small on-resistances of these two internal driver transistors enable a high efficiency, stable power supply with an output current up to 3.0A. A 0.6V reference voltage source is incorporated, and the output voltage can be set freely by external resistors. Oscillation frequency is set to 1.2MHz or 3.0MHz can be selected for suiting to your particular application. The operation mode is HISAT-COT (*) control, which has an excellent transient response. PWM control or PWM/PFM auto switching control can be selected at the MODE1 pin, and a high-speed response, low ripple, and high efficiency are achieved across the entire load range (from light loads to heavy loads). As for the soft-start function as fast as 0.25ms in typical for quick turn-on. The soft start time can be set as desired by adding an external capacitance to the SS pin. Internal protection circuits include over current protection, short-circuit protection, and thermal shutdown circuits to enable safe use. Short circuit protection or Hiccup mode can be selected at the MODE2 pin. Soft-off function and CL High Speed discharge function discharge the electric charge at the output capacitor CL when putting the IC in a stand-by mode. Soft-off function can be selected at the MODE3 pin.
Features
- Input Voltage Range: 2.7V ~ 5.5V
- Output Voltage Range: PFM control 0.6V ~ 3.6V; PWM/PFM automatic switching control 0.8V ~ 3.6V
- FB Voltage: 0.6V ± 1.0%
- Output Current: 3.0A
- Oscillation Frequency: 1.2MHz, 3.0MHz
- Efficiency: 95% (VIN=5.0V, VOUT=3.3V, IOUT=1.0A)
- Control Methods: HiSAT-COT® Control;100% Duty Cycle;Mode select between;Fixed PWM and PWM/PFM Auto
- Protection Functions: Thermal Shutdown; Current Limit (Pendent character); HICCUP or Short Circuit Protection
- Functions: UVLO, Soft-Start, Soft-off; CL High Speed Discharge, Power good
- Output Capacitor: Ceramic Capacitor
- Operating Ambient Temperature: -40℃ ~ 105℃
- Package: QFN0404-24C
- Environmentally Friendly: EU RoHS Compliant, Pb Free
Typical applications
- Industrial application, FPGA, SSD, ASIC, DSP
- PC, Graphic board, Storage
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | IRP,40K(A) | Mount | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | RDC typ.(mΩ) | VOP(V) | RDC(mΩ) | Material | Qty. | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-LHMI SMT Power Inductor, 0.22 µH, 11.1 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.22 µH | Saturation Current @ 10%11.1 A | Saturation Current @ 30%21.5 A | DC Resistance8 mΩ | Self Resonant Frequency230 MHz | Performance Rated Current11.4 A | MountSMT | – | – | – | Size4012 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4.45 mm | Width4.06 mm | Height1 mm | – | – | DC Resistance6.6 mΩ | Operating Voltage120 V | – | – | Packaging Unit4000 | –Check availability | |||
| SPECWE-LHMI SMT Power Inductor, 0.22 µH, 10.8 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.22 µH | Saturation Current @ 10%10.8 A | Saturation Current @ 30%22.3 A | DC Resistance7.3 mΩ | Self Resonant Frequency195 MHz | Performance Rated Current11.4 A | MountSMT | – | – | – | Size4020 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4.45 mm | Width4.06 mm | Height1.8 mm | – | – | DC Resistance6.6 mΩ | Operating Voltage120 V | – | – | Packaging Unit3000 | –Check availability | |||
 | SPECWE-MAPI SMT Power Inductor, 1 µH, 5.3 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance1 µH | Saturation Current @ 10%5.3 A | Saturation Current @ 30%11.5 A | DC Resistance15 mΩ | Self Resonant Frequency55 MHz | Performance Rated Current10.1 A | MountSMT | – | – | – | Size4020 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4 mm | Width4 mm | Height2 mm | – | – | DC Resistance12 mΩ | Operating Voltage80 V | – | – | Packaging Unit1000 | –Check availability | |||
 | SPECWE-HCI SMT Flat Wire High Current Inductor, 1 µH, 5.5 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance1 µH | Saturation Current @ 10%5.5 A | Saturation Current @ 30%11.5 A | DC Resistance5.225 mΩ | Self Resonant Frequency158 MHz | Performance Rated Current14.8 A | MountSMT | – | – | – | Size5040 | Operating Temperature -40 °C up to +150 °C | – | – | – | Length5.5 mm | Width5.3 mm | Height4 mm | – | – | – | – | DC Resistance4.75 mΩ | MaterialSuperflux | Packaging Unit1500 | –Check availability | |||
 | SPECWE-MAIA SMT Power Inductor, 1 µH, 5.3 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAIA SMT Power Inductor | Inductance1 µH | Saturation Current @ 10%5.3 A | Saturation Current @ 30%11.5 A | DC Resistance15 mΩ | Self Resonant Frequency55 MHz | Performance Rated Current10.1 A | MountSMT | – | – | – | Size4020 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4.1 mm | Width4.1 mm | Height2.1 mm | – | – | DC Resistance12 mΩ | – | – | – | Packaging Unit1000 | –Check availability | |||
| SPECWE-MAPI SMT Power Inductor, 1 µH, 6.2 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance1 µH | Saturation Current @ 10%6.2 A | Saturation Current @ 30%12.5 A | DC Resistance13.5 mΩ | Self Resonant Frequency59 MHz | Performance Rated Current10.25 A | MountSMT | – | – | – | Size4030 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4.3 mm | Width4.3 mm | Height3.1 mm | – | – | DC Resistance11.6 mΩ | Operating Voltage80 V | – | – | Packaging Unit700 | –Check availability | |||
| SPECWE-MAIA SMT Power Inductor, 1 µH, 6.2 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAIA SMT Power Inductor | Inductance1 µH | Saturation Current @ 10%6.2 A | Saturation Current @ 30%12.5 A | DC Resistance13.5 mΩ | Self Resonant Frequency59 MHz | Performance Rated Current10.25 A | MountSMT | – | – | – | Size4030 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4 mm | Width4 mm | Height3 mm | – | – | DC Resistance11.6 mΩ | – | – | – | Packaging Unit700 | –Check availability | |||
SPECWCAP-CSGP MLCCs 6.3 V(DC), –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 6.3 V(DC) | – | – | – | – | – | – | – | Capacitance47 µF | Capacitance±20% | Rated Voltage6.3 V (DC) | Size1206 | Operating Temperature -55 °C up to +85 °C | Dissipation Factor10 % | Insulation Resistance0.002 GΩ | Ceramic TypeX5R Class II | Length3.2 mm | Width1.6 mm | Height1.6 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | Packaging Unit2000 | –Check availability | ||||
SPECWCAP-CSGP MLCCs 10 V(DC), –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | – | – | – | Capacitance47 µF | Capacitance±20% | Rated Voltage10 V (DC) | Size1206 | Operating Temperature -55 °C up to +85 °C | Dissipation Factor10 % | Insulation Resistance0.002 GΩ | Ceramic TypeX5R Class II | Length3.2 mm | Width1.6 mm | Height1.6 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | Packaging Unit2000 | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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