R1290 Series
Triple Output DC/DC Converter for LCD/CCD
R1290 Series
Triple Output DC/DC Converter for LCD/CCD
拡大
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Description
The R1290 Series are triple output CMOS-based step-up/inverting DC/DC converters. R1290 consists of the inductor type PWM step-up DC/DC converter (DC/DC1) with an internal 2A Nch. driver and charge pump type positive/negative DC/DC converters (DC/DC2, DC/DC3). Triple output start-up sequence can be set by external capacitors. R1290 is ideally suitable for use in power source for equipment that requires sequence control such as LCD and CCD.
Spec
| Standard | Automotive | |
|---|---|---|
| Input Voltage Range | 2.0 V to 5.5 V (6.5 V) | |
| Operating Temperature Range | -40°C to 95°C (125°C) | -40°C to 105°C (125°C) |
| Supply Current | Typ. 3.5 mA | |
| Standby Current | Typ. 0.1 µA | |
| Output Voltage Range | Boost DC/DC: Max. 20 V (Externally Adjustable) | |
| Feedback Voltage | 1.0 V | |
| Feedback Voltage Accuracy | ±15 mV | |
| Feedback Voltage Temperature Coefficient | Typ. ±150 ppm/°C | |
| Driver ON-resistance | Typ. 150 mΩ | |
| Oscillator Frequency | Externally Adjustable: 180 kHz to 1.4 MHz | |
| Package | QFN0404-24 | |
| Charge-pump Output Voltage | Adjustable with external resistors | |
| Charge-pump VREF/CPPFB Voltage Temperature Coefficient | VREF Voltage Temperature Coefficient: Typ. 150 ppm/°C CPPFB Voltage Temperature Coefficient: Typ. 150 ppm/°C |
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| Charge-pump Oscillator Frequency | 1/4 of the main step-up DC/DC converter oscillator frequency | |
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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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 |
Technical Documents
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Typical Application
For external parts, please refer to the datasheet.
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Related Links
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R1290K10xA-E2 |
|
QFN0404-24 | R1290K | R1290K |
| R1290K10xA-E2-AE |
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QFN0404-24 | R1290K | R1290K-AE |
- 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
R1290 Series