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reference designRAA230407

Renesas RAA230407

3-ch Step-Down Switching Regulator + 1-ch LDO

Overview

TopologyBuck Converter
Input voltage2.5-5.5 V
Switching frequency1300-2000 kHz
Output 11.8 V / 0.5 A
Output 23.3 V / 0.5 A
Output 33 V / 0.5 A
Output 42.5 V / 0.5 A
IC revision1.02

Description

The RAA23040x is a power supply IC that has 3-ch step-down Switching Regulator containing power MOSFETs and 1-ch LDO.

Features

  • Switching Regulator (ch1, ch3, ch4)
  • ¾ Synchronous rectification type step-down circuit
  • ¾ Integrated power MOSFETs
  • ¾ Internal phase compensator
  • ¾ Power good function (ch1)
  • ¾ Low power mode
  • (ch1, ch3 and ch4 operate at low frequency and reduce the power consumption of the IC.)
  • ¾ Switching frequency: 1.3 MHz to 2 MHz (variable)
  • ¾ Internal timer-latch-type short-circuit protector
    • LDO (ch2)
  • ¾ Internal over current protector (foldback-current limiting)
    • Common part
  • ¾ Independent On/Off control for each channel
  • ¾ Internal digital soft-start function (adjustable soft-start time)
  • ¾ Internal discharge circuit
  • ¾ Internal timer-latch-type thermal shutdown circuit (shutdown temperature: 150°C or higher)
  • ¾ Internal recovery-type under voltage lockout circuit

More information

Products

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L(µH)
IR(mA)
IR 2(mA)
ISAT(mA)
RDC(mΩ)
fres(MHz)
Type
H(mm)
W(mm)
IR(A)
Mount
SamplesAvailability & Sample
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74479787247Ai
SPECWE-PMI Power Multilayer Inductor, 4.7 µH, 1000 mA
Replacement Order Code 74479887247A
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Status PTNi| Production will be discontinued. Expected lifetime: <2 years.
Product seriesWE-PMI Power Multilayer Inductor
Inductance4.7 µH
Rated Current1000 mA
Rated Current 21500 mA
Saturation Current270 mA
DC Resistance110 mΩ
Self Resonant Frequency25 MHz
TypeLow RDC 
Height0.8 mm
Width2 mm
–
MountSMT 
744028004
SPECWE-TPC SMT Tiny Power Inductor, 4.7 µH, –
Replacement Order Code–
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Downloads9 files

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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TPC SMT Tiny Power Inductor
Inductance4.7 µH
–
–
Saturation Current700 mA
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Self Resonant Frequency70 MHz
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Height1.1 mm
Width2.8 mm
Rated Current0.85 A
MountSMT 
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