NC2780 Series
Synchronous 34V Input Buck Switching Regulator (Controller)
NC2780 Series
Synchronous 34V Input Buck Switching Regulator (Controller)
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Provides at-a-glance product features, functions, and concepts.
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Description
The NC2780 is a CMOS-based controller-type buck switching regulator that operates using external high-side and low-side NMOSFETs. Equipped with a PFM function, it achieves high efficiency even at light loads, enabling low consumption in the system. Also, the switching frequency can be adjusted in the range of 250 kHz to 1 MHz by an external resistor.
Spec
| Standard | Industrial | Automotive | |
|---|---|---|---|
| Input Voltage Range | 4.0 V to 34.0 V (36.0 V) | ||
| Operating Temperature Range | -40°C to 105°C (125°C) | -40°C to 125°C (150°C) | -40°C to 125°C (150°C) |
| Supply Current | Typ. 15 µA | ||
| Standby Current | Typ. 3 µA | ||
| Output Voltage Range | Externally Adjustable: 0.7 V to 5.3 V | ||
| Feedback Voltage | 0.64 V | ||
| Feedback Voltage Accuracy | ±1% | ||
| Oscillator Frequency | Externally Adjustable: 250 kHz to 1 MHz | ||
| Package | HSOP-18-AK | ||
Protections / Functions
| TSD | OCP | OVP | UVLO | OVLO | Reverse | Shutdown | Soft Start | SSCG | PGOOD | Auto Discharge | Anti-ringing | Sequencing | Max Duty | Ext. Phase | LED Adjust |
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Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| OCP | Overcurrent Protection Note: The function previously labeled as "ILX (LX Current Limit Function)" is now shown as "OCP." |
| OVP | Overvoltage Protection |
| UVLO | Undervoltage Lockout Protection |
| OVLO | Overvoltage Lockout Protection |
| Reverse | Reverse Current Protection Circuit |
| Shutdown | Shutdown Function |
| Soft Start | Soft Start Function |
| SSCG | Spread Spectrum Clock Generator Function |
| PGOOD | Power Good Output |
| Auto Discharge | Auto Discharge Function |
| Anti-ringing | Anti-ringing Switch Function |
| Sequencing | Start-up Sequencing Control |
| Max Duty | Maximum Duty Cycle |
| Ext. Phase | Externally Adjustable Phase Compensation |
| LED Adjust | LED High-speed Dimming Control |
Technical Documents
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Typical Application
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Efficiency Typical Characteristics
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Related Links
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| NC2780AKxxxxE2S |
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HSOP-18-AK | See datasheet | NC2780AKS |
| NC2780AKxxxxE2D |
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HSOP-18-AK | See datasheet | NC2780AKD |
| NC2780AKxxxxE2P |
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HSOP-18-AK | See datasheet | NC2780AKP |
| NC2780AKxxxxE2Q |
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HSOP-18-AK | See datasheet | NC2780AKQ |
- Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Qualification Test Plan (QTP) Sheets
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FAQ
Buy / Contact
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Purchase, Request for samples and documentsSales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
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Available from 1 piece!Our electronic device products are available through our authorized online distributors.
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Technical Support
NC2780 Series