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R1282 Series
PWM Step-up/Step-down DC/DC Controller
The R1282 Series are low supply current dual output CMOS-based PWM step-up/step-down DC/DC controllers. R1282 includes a soft start circuit, an under-voltage lockout circuit (UVLO), and a latch type protection circuit. By simply using inductors, resistors, capacitors, power MOS, and diodes, as external components, a high-efficiency step-up/step-down DC/DC converter can be easily configured. The oscillator maximum duty cycle, phase compensation, and soft start time can be set with an external resistor and capacitor.
Specs & Datasheets
| 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. 1.4 mA (VIN = 5.5 V, EXT at no load) |
| Feedback Voltage | Both Boost & Inverting: 1.0 V |
| Feedback Voltage Accuracy | ±1.5% |
| Oscillator Frequency | Typ. 700 kHz |
| Package | SON-10 |
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 Documents
Typical Application
L1,L2: 6.8µH, C1=C2=10µF
Efficiency vs. Output Current
Efficiency vs. Output Current
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R1282D002A-TR-FE |
|
SON-10 | R1282D | R1282D-FE |
C
Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.
Sample / Buy
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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.
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 |