RP401 Series
1A PWM/VFM Step-up DC/DC Converter

Download Datasheet

  • Description

    The RP401 Series are CMOS-based PWM/VFM step-up DC/DC converters which can start-up from Typ. 0.6V. RP401 can be switched from two control types by inputting signal to the MODE pin - fixed PWM control or PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. (RP401N Series can be selected from fixed PWM control or PWM/VFM auto switching control.)

    RP401 includes a soft start circuit. By simply using an inductor, a capacitor, (resisters for adjustable type), and a diode as external components, a high-efficiency step-up DC/DC converter can be easily configured. The output voltage can be selected from the internally fixed or the externally adjustment. In addition to SOT-23-5 package, a 1.8mm × 2.0mm square DFN(PLP)1820-6 package is also available.

  • Spec
    Consumer
    Input Voltage Range 0.6 V to 5.5 V (6.0 V)
    Operating Temperature Range -40°C to 85°C (125°C)
    Supply Current Typ. 400 µA (VSET = 3.0 V, switching)
    Typ. 130 µA (non-switching, VFM mode)
    Typ. 230 µA (non-switching, PWM mode)
    Standby Current Typ. 0.15 µA (CE = "L")
    Output Voltage Range 1.8 V to 5.5 V
    (Internally Fixed: xx1, Externally Adjustable:001)
    Output Voltage Accuracy ±2%
    Feedback Voltage 0.6 V
    Feedback Voltage Accuracy ±2%
    Oscillator Frequency Typ. 1.2 MHz
    Maximum Duty Cycle Min. 80%, Typ. 88%
    Package DFN(PLP)1820-6, SOT-23-5

    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
    Documents
    • RP401K001C/D Typical Application (Externally adjustable output voltage type)

      RP401K001C/D Typical Application (Externally adjustable output voltage type)

    • RP401Kxx1A/B Typical Application (Internally fixed output Voltage type)

      RP401Kxx1A/B Typical Application (Internally fixed output Voltage type)

    • RP401x331x / RP401K001x (VOUT=3.3V) Efficiency vs. Output Current: Fixed PWM control

      RP401x331x / RP401K001x (VOUT=3.3V) Efficiency vs. Output Current: Fixed PWM control

    • RP401x331x / RP401K001x (VOUT=3.3V) Efficiency vs. Output Current: PWM/VFM auto switching control

      RP401x331x / RP401K001x (VOUT=3.3V) Efficiency vs. Output Current: PWM/VFM auto switching control

  • Quality &
    Packages
    • 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.

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

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Boost
VIN
min (V)
0.6
VIN
max (V)
5.5
VOUT
min (V)
1.8
VOUT
max (V)
5.5
ISS
(µA)
130