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RP507 Series

600mA PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier

  • Consumer
  • PLP
  • RoHS

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(PLP)1616-6D package is available.

Specs & Datasheets

  Consumer
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(PLP)1616-6D

Download Datasheet

Protections / Functions

Functional Description

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

RP507K001B Typical Application

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=1.8V, L=2.2µH)

RP507K001B Efficiency vs. Output Current (VOUT=3.3V, L=4.7µH)

RP507K001B Efficiency vs. Output Current (VOUT=3.3V, L=4.7µH)

Quality & Packages

Product Name Compatibility Package Marking Reliability
RP507K001B-TR
  • gradeConsumerC
  • plpP
DFN(PLP)1616-6D RP507K RP507K

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

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

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Buck
VIN
min (V)
2.3
VIN
max (V)
5.5
VOUT
min (V)
0.7
VOUT
max (V)
5.5
IOUT
(mA)
600
ISS
(µA)
32