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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 | 2.1 |
Description
The XC9274/XC9275 series is a group of synchronous-rectification type DC/DC converters with a built-in 51mΩ P-channel MOS driver transistor and 49mΩ 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, the XC9274 series is PWM control, the XC9275 series is PWM/PFM auto switching control, allowing fast response, low ripple, and high efficiency over the full range of loads (from light loads to heavy loads).During stand-by, all circuits are shutdown to reduce current consumption to as low as 1.0μA or less.As for the soft-start function as fast as 0.25ms in typical for quick turn-on.Internal protection circuits include over current protection, short-circuit protection, and thermal shutdown circuits to enable safe use.Short-circuit protection is available only for B,C type.Hiccup mode is available only for D,E type.Soft-off function is available only for B, D type.The package is the SOP-8FD.
Features
- Input Voltage Range: 2.7V～5.5V
- Output Voltage Range: 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
- PWM Control (XC9274)
- PWM/PFM auto switching Control (XC9275)
- Protection Circuits: Termal Shutdown
- Current Limit (Pendent character)
- HICCUP(D,E Type)
- Short Circuit Protection(B,C Type)
- Functions: UVLO , Soft-Start
- Soft-off(B,D Type)
- CL High Speed Discharge
- Capacitor: Ceramic Capacitor
- Operating Ambient Temperature: -40°C～+105°C
- Package: SOP-8FD
- Environmentally Friendly: EU RoHS Compliant, Pb Free
Typical applications
- PC, Graphic board, Storage
- Industrial application
- FPGA, SSD, ASIC, DSP
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 | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MAPI SMT Power Inductor, 1 µH, 5.3 A | 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 | – | – | ||||
 | WE-HCI SMT Flat Wire High Current Inductor, 1 µH, 5.5 A | 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 | ||||
 | WE-MAIA SMT Power Inductor, 1 µH, 5.3 A | 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 | – | – | – | ||||
| WE-MAPI SMT Power Inductor, 1 µH, 6.2 A | 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 | – | – | ||||
| WE-MAIA SMT Power Inductor, 1 µH, 6.2 A | 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 | – | – | – | ||||
| WCAP-CSGP MLCCs 6.3 V(DC), –, – | 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 | – | – | – | – | |||||
| WCAP-CSGP MLCCs 10 V(DC), –, – | 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 | – | – | – | – |