R1260 Series
60V Input / 80V Absolute Maximum Rating Synchronous Step-down DC/DC Controller
R1260 Series
60V Input / 80V Absolute Maximum Rating Synchronous Step-down DC/DC Controller
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Provides at-a-glance product features, functions, and concepts.
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Description
The R1260 is a step-down DC/DC controller which can generate an output voltage of 1.0 V to 16.0 V by driving external high- / low-side NMOSFETs. By the adoption of a unique current mode PWM architecture without an external current sense resistor, this device can make up a stable DC/DC converter with high-efficiency even if adding low Ron MOSFETs and a low DCR inductor externally.
Key Benefits
- 48 V power can be provided by a wide-ranging input voltage of 5 V to 60 V.
- High-accuracy feedback voltage: 0.8 V ±1.5% (Operating Temperature Range)
- High efficiency at light load (IOUT=1mA) by VFM control (80% @VIN=24V, 70% @VIN=48V)
Spec
| Standard | Industrial | Automotive | |
|---|---|---|---|
| Input Voltage Range | 5.0 V to 60.0 V (80.0 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 (at VFM mode) | ||
| Standby Current | Typ. 3 µA | ||
| Output Voltage Range | Externally Adjustable: 1.0 V to 16.0 V | ||
| Feedback Voltage | 0.8 V | ||
| Feedback Voltage Accuracy | ±1.5% | ||
| Oscillator Frequency | Externally Adjustable: 150 kHz to 600 kHz | ||
| Package | HSOP-18 | ||
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 |
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| 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 (at 250 kHz)
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Efficiency vs. Output Current
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Related Links
Quality & Packages
- 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.
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
R1260 Series