Skip to main content Skip to first level navigation
Skip to main content First level navigation Menu
Contact Us About Us ricoh.com
Breadcrumbs
Facebook (Open link in new window) YouTube (Open link in new window) LinkedIn (Open link in new window)
Main content
Main content

RP402 Series

PWM/VFM Step-up DC/DC Converter with Synchronous Rectifier

  • Consumer
  • PLP
  • RoHS

The RP402 Series are min. 0.6V input, CMOS-based PWM/VFM step-up DC/DC converters with synchronous rectifier. The RP402 have three switching control types, or PWM control, forced PWM control, and PWM/VFM auto change control. The RP402 includes a soft start circuit, a bypass switch, shutdown switch, an anti-ringing switch. By simply using with an inductor, a capacitor, and resistors (for output voltage adjustable type) as external components, a high-efficiency step-up DC/DC converter can be realized.

The output voltage can be selected from the internally fixed type or externally adjustment is possible. In addition to SOT-23-5 package, a 2.0mm square DFN(PLP)2020-8 package is available. The RP402 are ideal for the applications powered by one-cell or two-cell alkaline, nickel-metal-hydride (NiMH) or one-cell Lithium-ion (Li+) batteries.

Specs & Datasheets

  Consumer
Input Voltage Range Internally Fixed Ver.: 0.6 V to 4.8 V
Externally Adjustable Ver: 0.6 V to 4.6 V
Operating Temperature Range -40°C to 85°C (125°C)
Supply Current Typ. 21 µA
Standby Current Typ. 0.2 µA
Start-up Voltage Typ. 0.7 V
Output Voltage Range 1.8 V to 5.5 V
Internally Fixed Ver.(Except RP402K00xx): 0.1 V step
Externally Adjustable (RP402K00xx)
Output Voltage Accuracy ±1.5%
Feedback Voltage 1.0 V
Feedback Voltage Accuracy ±15 mV
Output Current 800 mA (VIN = 3.6 V, VOUT = 5.0 V)
Driver ON-resistance NMOS/ PMOS: 0.20 Ω (VOUT = 5.0 V, 25°C)
Oscillator Frequency 1.2 MHz (Normal PWM Type), 1.0 MHz (Forced PWM Type)
Efficiency 94% (100 mA/ 5.0 V, VIN = 3.6 V, 25°C)
90% (1 mA/ 5.0 V, VIN = 3.6 V, 25°C)
Package DFN(PLP)2020-8, SOT-23-5

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

RP402Kxxxx Typical Application (Adjustable Output Voltage Type)

RP402Kxxxx Typical Application (Adjustable Output Voltage Type)

L: 2.2 µH, C1: 10 µF, C2: 10 µF x2

RP402K/Nxxxx Typical Application (Fixed Output Voltage Type)

RP402K/Nxxxx Typical Application (Fixed Output Voltage Type)

*) MODE pin : only RP402Kxxxx.
L: 2.2 µH, C1: 10 µF, C2: 10 µF x2

RP402x501x / RP402K501x (VOUT=5.0V) Efficiency vs. Output Current: Fixed PWM control

RP402x501x / RP402K501x (VOUT=5.0V) Efficiency vs. Output Current: Fixed PWM control

RP402x501x / RP402K501x (VOUT=5.0V) Efficiency vs. Output Current: PWM/VFM auto switching control

RP402x501x / RP402K501x (VOUT=5.0V) Efficiency vs. Output Current: PWM/VFM auto switching control

Quality & Packages

Product Name Compatibility Package Marking Reliability
RP402Kxxxx-TR
  • gradeConsumerC
  • plpP
DFN(PLP)2020-8 RP402K RP402K
RP402Nxxxx-TR-FE
  • gradeConsumerC
  • plpP
SOT-23-5 RP402N RP402N-FE

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 Boost
VIN
min (V)
0.6
VIN
max (V)
4.8
VOUT
min (V)
1.8
VOUT
max (V)
5.5
ISS
(µA)
21