RP517 Series
0.3V Low Output Voltage Low Quiescent Current 300mA Buck DC/DC Converter

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  • Description

    RP517 is a low-voltage resistance buck DC/DC converter featuring ultra-low 0.3 µA quiescent current and 0.3 V output voltage. Suitable for wearable and IoT devices which require long-life batteries and downsizing.

    Key Benefits

    • Ultra-low consumption current (IQ: 0.3 µA) with the VFM control for DC/DC (switching frequency: 1 MHz max.)
    • Suitable for low power devices due to its ultra-low output voltage range from 0.3 V to 1.2 V
    • Suitable for coin batteries and USB ports due to its wide input range from 1.8 V to 5.5 V
    • Selectable 2 packages: WLCSP and DFN. Suitable for IC cards due to WLCSP’s thickness of 0.4 mm and less.

  • Spec
    Input Voltage Range 1.8 V to 5.5 V (6.5 V)
    Operating Temperature Range -40°C to 85°C (125°C)
    Standby Current Typ. 0.01 µA
    Operating Quiescent Current Typ. 0.3 µA
    Output Voltage Range 0.3 V to 1.2 V (0.1 V step)
    Output Voltage Accuracy ±18 mV (Ta = 25°C)
    Output Current 300 mA
    Oscillator Frequency Typ. 1 MHz
    Maximum Duty Cycle Typ. PMOS 0.15 Ω, NMOS 0.15 Ω (RP517Z)
    Package WLCSP-8-P1, DFN(PL)2527-10

    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
  • Technical
    • Typical Application

      Typical Application

    • Efficiency vs. Output Current (VOUT = 0.5 V)

      Efficiency vs. Output Current (VOUT = 0.5 V)

    • Related Links

      • Prime Designer

        Online Design Tool

        Registration to myNISD is required to use some of the functions, such as simulations.

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  • Quality &
    • 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.

Download Datasheet

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

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