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RN5RK Series
8V Input VFM Step-up DC/DC Converter
The RN5RK Series are low supply current, CMOS-based VFM step-up DC/DC converters. By simply using an inductor, a diode, and a capacitor as external components, a high-efficiency step-up DC/DC converter can be easily configured. RN5RK comes in two versions: xx1 version with an internal output transistor and xx2 version with an external transistor.
Specs & Datasheets
| Consumer | |
|---|---|
| Input Voltage Range | 0.7 V to 8.0 V (9.0 V) |
| Operating Temperature Range | -40°C to 85°C (125°C) |
| Supply Current | Typ. 35 µA |
| Standby Current | Typ. 0 µA |
| Start-up Voltage | Max. 0.9 V (Ver. xx1) Max. 0.8 V (Ver. xx2) |
| Output Voltage Range | 2.0 V to 5.5 V (0.1 V step) |
| Output Voltage Accuracy | ±2.5% |
| Oscillator Frequency | Typ. 100 kHz |
| Maximum Duty Cycle | Min. 70%, Typ. 77% (Ver. A) Min. 47%, Typ. 55% (Ver. B) |
| Package | SOT-23-5 |
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 Documents
RN5RKxx1x Typical Application
L=100µH, CL=47µF
RN5RKxx2A Typical Application
L=27µH, CL=47µF×2, Rb=300Ω, Cb=0.01µF
RN5RK301A Efficiency vs. Output Current
RN5RK302A Efficiency vs. Output Current
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| RN5RKxxxx-TR-FE |
|
SOT-23-5 | RN5RK | RN5RK-FE |
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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Please contact us or our distributors for unpublished reliability information.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
Buy Online
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 |