Datasheets
R1243S001A-E2-FE by:

Switching Regulator, Current-mode, 2A, 1100kHz Switching Freq-Max, CMOS, PDSO8, ANTIMONY AND HALOGEN FREE, HSOP-8

Part Details for R1243S001A-E2-FE by Ricoh Electronic Devices Co Ltd

Results Overview of R1243S001A-E2-FE by Ricoh Electronic Devices Co Ltd

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Applications Consumer Electronics

R1243S001A-E2-FE Information

R1243S001A-E2-FE by Ricoh Electronic Devices Co Ltd is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Price & Stock for R1243S001A-E2-FE

Part # Distributor Description Stock Price Buy
Quest Components   723
  • 1 $5.1600
  • 315 $2.8380
  • 706 $2.5800
$2.5800 / $5.1600 Buy Now

Part Details for R1243S001A-E2-FE

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R1243S001A-E2-FE Part Data Attributes

R1243S001A-E2-FE Ricoh Electronic Devices Co Ltd
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R1243S001A-E2-FE Ricoh Electronic Devices Co Ltd Switching Regulator, Current-mode, 2A, 1100kHz Switching Freq-Max, CMOS, PDSO8, ANTIMONY AND HALOGEN FREE, HSOP-8
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Transferred
Ihs Manufacturer RICOH ELECTRONIC DEVICES CO LTD
Part Package Code SOIC
Pin Count 8
Reach Compliance Code unknown
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer Ricoh
Additional Feature OPERATES IN ADJUSTABLE MODE FROM 0.8 V TO 18 V
Analog IC - Other Type SWITCHING REGULATOR
Control Mode CURRENT-MODE
Control Technique PULSE WIDTH MODULATION
Input Voltage-Max 30 V
Input Voltage-Min 4.5 V
Input Voltage-Nom 12 V
JESD-30 Code R-PDSO-G8
JESD-609 Code e3
Length 5.2 mm
Moisture Sensitivity Level 1
Number of Functions 1
Number of Terminals 8
Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C
Output Current-Max 2 A
Package Body Material PLASTIC/EPOXY
Package Code HLSOP
Package Shape RECTANGULAR
Package Style SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Seated Height-Max 1.6 mm
Surface Mount YES
Switcher Configuration BUCK
Switching Frequency-Max 1100 kHz
Technology CMOS
Temperature Grade INDUSTRIAL
Terminal Finish MATTE TIN
Terminal Form GULL WING
Terminal Pitch 1.27 mm
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) 10
Width 4.4 mm

Alternate Parts for R1243S001A-E2-FE

This table gives cross-reference parts and alternative options found for R1243S001A-E2-FE. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of R1243S001A-E2-FE, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
ADP2441ACPZ-R7 Analog Devices Inc $3.0476 36 V,1 A, Synchronous, Step-Down DC-DC Regulator R1243S001A-E2-FE vs ADP2441ACPZ-R7
R1243S001B-E2-FE Ricoh Electronic Devices Co Ltd Check for Price Switching Regulator, Current-mode, 2A, 1100kHz Switching Freq-Max, CMOS, PDSO8, ANTIMONY AND HALOGEN FREE, HSOP-8 R1243S001A-E2-FE vs R1243S001B-E2-FE
ADP2441ACPZ-R2 Analog Devices Inc Check for Price 36 V,1 A, Synchronous, Step-Down DC-DC Regulator R1243S001A-E2-FE vs ADP2441ACPZ-R2
TPS5405DR Texas Instruments Check for Price 6.5V to 28V Input, 5V Fixed Output at 2A Step-Down Regulator with Intregrated MosFET 8-SOIC -40 to 125 R1243S001A-E2-FE vs TPS5405DR

R1243S001A-E2-FE Related Parts

R1243S001A-E2-FE Frequently Asked Questions (FAQ)

  • Ricoh recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.

  • To ensure stable output voltage regulation, it's essential to follow the recommended input and output capacitor values, as well as the suggested PCB layout. Additionally, ensure that the input voltage is within the recommended range, and the output current is within the specified maximum rating.

  • The maximum allowed input voltage ripple for the R1243S001A-E2-FE is 1Vp-p. Exceeding this value may affect the regulator's performance and stability.

  • The R1243S001A-E2-FE is rated for operation up to 125°C. However, it's essential to consider the derating curves and ensure that the regulator is not exposed to temperatures above the recommended maximum rating.

  • The R1243S001A-E2-FE has built-in overcurrent protection. However, it's still recommended to add external protection, such as a fuse or a current-limiting resistor, to prevent damage from excessive current surges.

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