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.
Qualification Test Plan (QTP) Sheets
To download the QTP sheets, a myNISD account is required. If you do not have an account, please register in advance.If you already have an account, please click the button below. After logging in to myNISD, the QTP sheet list page for the corresponding series will be displayed.
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