RP507 Series
600mA PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier
Description
The RP507 is low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. The RP507 is PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. The output voltage is adjustable with external divider resistors. The RP507 includes a soft start circuit, an under-voltage lockout circuit (UVLO), thermal shutdown circuit, and an auto-discharge circuit. By simply using an inductor, capacitors and resistors as external components, a high-efficiency step-down DC/DC converter can be easily configured. A small size inductor (2.0 x 1.2mm, 2.2µH), a small size input capacitor (1.0 x 0.5mm, 4.7µF) and output capacitor (1.0 x 0.5mm, 10µF) can be used. A 1.6mm × 1.6mm DFN(PL)1616-6D package is available.
Spec
| Standard | |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V (6.5 V) |
| Operating Temperature Range | -40°C to 85°C (125°C) |
| Supply Current | Typ. 32 µA |
| Standby Current | Typ. 0 µA |
| Output Voltage Range | 0.7 V to 5.5 V (As for 1.0 V or less, input voltage range is limited.) |
| Output Voltage Accuracy | ±1.5% (Ta = 25°C) |
| Feedback Voltage | 0.6 V |
| Feedback Voltage Accuracy | ±9 mV |
| Feedback Voltage Temperature Coefficient | Typ. ±100 ppm/°C |
| Output Current | 600 mA |
| Driver ON-resistance | Pch: Typ. 0.38 Ω, Nch: Typ. 0.3 Ω (VIN = 3.6 V) |
| Oscillator Frequency | Typ. 2.0 MHz |
| Maximum Duty Cycle | 100% |
| Package | DFN(PL)1616-6D |
Protections / Functions
| TSD | OCP | OVP | UVLO | OVLO | Reverse | Shutdown | Soft Start | SSCG | PGOOD | Auto Discharge | Anti-ringing | Sequencing | Max Duty | Ext. Phase | LED Adjust |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
|
|
|
|
Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| OCP | Overcurrent Protection Note: The function previously labeled as "ILX (LX Current Limit Function)" is now shown as "OCP." |
| 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
-
RP507K001B Typical Application
L : 2.2µH / 4.7µH
-
RP507K001B Efficiency vs. Output Current (VOUT=1.8V, L=2.2µH)
-
RP507K001B Efficiency vs. Output Current (VOUT=3.3V, L=4.7µH)
-
Related Links
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| RP507K001B-TR |
|
DFN(PL)1616-6D | See datasheet | RP507K |
- 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
-
Purchase, Request for samples and documentsSales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
-
Available from 1 piece!Our electronic device products are available through our authorized online distributors.
-
Technical Support