R1283 Series
PWM Step-up/Inverting DC/DC Converter for CCD/LCD
R1283 Series
PWM Step-up/Inverting DC/DC Converter for CCD/LCD
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Description
The R1283 Series are dual output CMOS-based PWM step-up/inverting DC/DC converters. R1283 includes a soft start circuit, an under-voltage lockout circuit (UVLO), and a latch protection circuit. By simply using inductors, resistors, capacitors, and diodes as external components, a high-efficiency step-up/inverting DC/DC converter can be easily configured. R1283 has internal 400mΩ ON resistance transistors for both step-up and inverting. Start-up sequence of two DC/DC converters can be selected. Since the shutdown sequence can also be set by the auto-discharge function of the inverting DC/DC converter, the products are ideally suitable for applications that require setting of power supply start-up/shutdown sequence for CCD, LCD, and OLED.
Spec
| Standard | |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V (6.5 V) |
| Operating Temperature Range | -40°C to 85°C (125°C) |
| Supply Current | Typ. 2 mA |
| Standby Current | Typ. 0.1 µA |
| Output Voltage Range | Boost: Max. 20 V (Externally Adjustable) Inverting: VCC-20 V(Externally Adjustable) |
| Output Voltage Accuracy | ±1.5% (Ta = 25°C) |
| Driver ON-resistance | Boost Nch driver: Typ. 400 mΩ Inverting Pch driver: Typ. 400 mΩ |
| Oscillator Frequency | Typ. 300 kHz, 700 kHz, 1.4 MHz |
| Maximum Duty Cycle | Typ. 91% |
| Package | DFN(PL)2730-12 |
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
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Efficiency vs. Output Current
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Efficiency vs. Output Current
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Related Links
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R1283K00xx-TR |
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DFN(PL)2730-12 | See datasheet | R1283K |
- 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
R1283 Series