RP511 Series
0.3µA IQ Low Quiescent Current 100mA Buck DC/DC Converter with Synchronous Rectifier

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  • Description

    RP511 is a buck DCDC converter featuring 0.3 µA ultra-low operating quiescent current. It is suitable for use in wearable and IoT devices that require miniaturization and long-lifetime of battery.

    Key Benefits

    • VFM (fSW up to 1 MHz) control achieves 0.3 µA ultra-low operating quiescent current.
    • The wide range of VIN from 2.0 V to 5.5 V allows operation from coin cell to USB port.
    • Total mount area including CIN, COUT, and inductor is 8.0 mm2.
    • Selectable packages including WLCSP, DFN, and SOT. 0.4 mm-thickness WLCSP package adaptable to IC cards.

  • Spec
    Input Voltage Range 2.0 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 1.0 V to 4.0 V (0.1 V step)
    Output Voltage Accuracy ±1.5% (VSET ≥ 1.2 V, Ta = 25°C), ±18 mV (VSET < 1.2 V)
    Output Current 100 mA
    Driver ON-resistance PMOS: Typ. 0.15 Ω, NMOS: Typ.0.15 Ω (RP511Z)
    Oscillator Frequency 1 MHz
    Package WLCSP-8-P1, DFN(PL)2527-10, SOT-89-5

    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
    • Typical Application

      Typical Application

      L: 2.2 µH, CIN: 10 µF, COUT: 22 µF

    • Efficiency vs. Output Current (VOUT = 1.8 V)

      Efficiency vs. Output Current (VOUT = 1.8 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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