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.
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Spec
Consumer 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 mΩOscillator 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 -
Technical
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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
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Quality &
PackagesProduct Name Compatibility Package Marking Reliability R1283K00xx-TR 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.
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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 |
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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 |