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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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)
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Spec
Consumer 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 ILX 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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Technical
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Typical Application (at 250 kHz)
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Efficiency vs. Output Current
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Related Links
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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.
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Sample / Buy
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Buy Online
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Buy, Request for Samples, Request for Information Materials
Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
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Download Datasheet
Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| ILX | LX Current Limit Function |
| OCP | Overcurrent Protection |
| 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 |