Special Contents for Automotive Applications
The reason RICOH power management IC has been chosen for more than 20 years
Special Contents for IoT Devices
Ultra-low supply current / Low noise / Low electromotive force / Battery monitoring
Special Contents for Industrial Applications
Long term supply / Flexible quantity purchase / High quality and reliability
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.
|Input Voltage Range (Maximum Rating)||0.6 V to 5.5 V (6.0 V)|
|Start-up Voltage||Typ. 0.6 V|
|Supply Current 1||Typ. 400 μA (VSET=3.0 V, Switching)|
|Supply Current 2||Typ. 130 μA (No switching, VFM)
Typ. 230 μA (No switching, PWM)
|Standby Current||Typ. 0.15 μA (CE="L")|
|Hold-on Voltage||Min. 0.6 V|
|Output Voltage Range||1.8 V to 5.5 V (Internally fixed) (xx1)
Externally adjustable (Feedback voltage : 0.6 V) (001C/D)
|Output Voltage Accuracy||±2%|
|Oscillator Frequency||1.2 MHz|
|Oscillator Maximum Duty Cycle||Min. 80%, Typ. 88%|
|Coil-current Limit Circuit||Current Limit Typ.1 A*|
|Soft Start Time||Typ. 0.7 ms|
|Latch Protection Circuit||Delay time for protection Typ. 3.3 ms (A Version only)|
|MODE pin||"H" : fixed PWM control,
"L" : PWM/VFM auto switching control (A/B Version)
*) This is an approximate value, because ON duty depends on conditions
(Internally fixed output Voltage type)
(Externally adjustable output voltage type)
RP401x331x / RP401K001x (VOUT=3.3V) Efficiency vs. Output Current
PWM/VFM auto switching control
Fixed PWM control
*) The tab is substrate level (GND).
In the RP401 Series, Output Voltage, Type of Output Voltage, and package for the ICs can be selected at the user’s request.
|Product Name||Package||Quantity per Reel|
|Package *1||Marking||Reliability *2|
*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.