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RP512 Series
0.3µA IQ Low Quiescent Current 300mA Buck DC/DC Converter with Synchronous Rectifier

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Description

RP512 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 10.6 mm2.
  • Selectable packages including WLCSP, DFN, and SOT. 0.4 mm-thickness WLCSP package adaptable to IC cards.

Spec

Standard
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 300 mA
Driver ON-resistance PMOS: Typ. 0.15 Ω, NMOS: Typ. 0.15 Ω (RP512Z)
Oscillator Frequency 1 MHz
Package WLCSP-8-P1, DFN(PL)2527-10, SOT-89-5

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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

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

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Buck
VIN
min (V)		 2.0
VIN
max (V)		 5.5
VOUT
min (V)		 1.0
VOUT
max (V)		 4.0
IOUT
(mA)		 300
ISS
(µA)		 0.3

Technical Documents

  • 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 & Packages

Product Name Compatibility Package Marking Reliability
RP512Zxx1x-TR-T
  • gradeConsumer
  • plp
 WLCSP-8-P1 See datasheet RP512Z-T
RP512Kxx1x-TR
  • gradeConsumer
  • plp
 DFN(PL)2527-10 See datasheet RP512K
RP512Hxx1x-T1-FE
  • gradeConsumer
  • plp
 SOT-89-5 See datasheet RP512H-FE
  • 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

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Buy / Contact

  • Purchase, Request for samples and documents
    Sales 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
RP512 Series