Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

R1224N102G Datasheet(PDF) 1 Page - RICOH electronics devices division

Part # R1224N102G
Description  PWM/VFM step-down DC/DC Converter
Download  42 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

R1224N102G Datasheet(HTML) 1 Page - RICOH electronics devices division

  R1224N102G Datasheet HTML 1Page - RICOH electronics devices division R1224N102G Datasheet HTML 2Page - RICOH electronics devices division R1224N102G Datasheet HTML 3Page - RICOH electronics devices division R1224N102G Datasheet HTML 4Page - RICOH electronics devices division R1224N102G Datasheet HTML 5Page - RICOH electronics devices division R1224N102G Datasheet HTML 6Page - RICOH electronics devices division R1224N102G Datasheet HTML 7Page - RICOH electronics devices division R1224N102G Datasheet HTML 8Page - RICOH electronics devices division R1224N102G Datasheet HTML 9Page - RICOH electronics devices division Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 42 page
background image
R1224N SERIES
PWM/VFM step-down DC/DC Converter
NO.EA-096-061102
OUTLINE
The R1224N Series are CMOS-based PWM step-down DC/DC Converter controllers with low supply current.
Each of these ICs consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a
phase compensation circuit, a soft-start circuit, a protection circuit, a PWM/VFM alternative circuit, a chip enable
circuit, resistors for output voltage detect, and input voltage detect circuit. A low ripple, high efficiency step-down
DC/DC converter can be easily composed of this IC with only several external components, or a power-transistor,
an inductor, a diode and capacitors. Output Voltage is fixed or can be adjusted with external resistors (Adjustable
types are without PWM/VFM alternative circuit).
With a PWM/VFM alternative circuit, when the load current is small, the operation is automatically switching
into the VFM oscillator from PWM oscillator. Therefore, the efficiency at small load current is improved. Several
types of the R1224Nxxx, which are without a PWM/VFM alternative circuit, are also available.
If the term of maximum duty cycle keeps on a certain time, the embedded protection circuit works. The
protection circuit is Reset-type protection circuit, and it works to restart the operation with soft-start and repeat
this operation until maximum duty cycle condition is released. When the cause of large load current or something
else is removed, the operation is automatically released and returns to normal operation.
Further, built-in UVLO function works when the input voltage is equal or less than UVLO threshold, it makes
this IC be standby and suppresses the consumption current and avoid an unstable operation.
FEATURES
• Supply Current ................................................................Typ. 20µA (R1224Nxx2E/F/M/L, R1224N102M)
Typ. 30
µA (R1224Nxx2G, R1224N102G)
Typ. 40
µA (R1224Nxx2H, R1224N102H)
• Standby Current ..............................................................Typ. 0µA
• Input Voltage Range .......................................................2.3V~18.5V
• Output Voltage Range.....................................................1.2V to 6.0V (R1224Nxx2x)
1.0V to VIN (R1224N102x)
• Output Voltage Accuracy.................................................±2.0%
• Oscillator Frequency .......................................................Typ. 180kHz (R1224Nxx2M, R1224N102M)
Typ. 300kHz (R1224Nxx2E/G, R1224N102G)
Typ. 500kHz (R1224Nxx2F/H, R1224N102H)
• Efficiency.........................................................................Typ. 90%
• Low Temperature-Drift Coefficient of Output Voltage......Typ. ±100ppm/°C
• Package .......................................................................... SOT-23-5
• Built-in Soft-start Function............................................... Typ. 10ms
• Built-in Current Limit Circuit
APPLICATIONS
• Power source for hand-held communication equipment, cameras, video instruments such as VCRs,
camcorders.
• Power source for battery-powered equipment.
• Power source for household electrical appliances.
1


Similar Part No. - R1224N102G

ManufacturerPart #DatasheetDescription
logo
RICOH electronics devic...
R1221N RICOH-R1221N Datasheet
218Kb / 21P
   Step-down DC/DC Converter with Voltage Detector
R1221N15AA RICOH-R1221N15AA Datasheet
218Kb / 21P
   Step-down DC/DC Converter with Voltage Detector
R1221N15AA-TR RICOH-R1221N15AA-TR Datasheet
218Kb / 21P
   Step-down DC/DC Converter with Voltage Detector
R1221N15AC RICOH-R1221N15AC Datasheet
218Kb / 21P
   Step-down DC/DC Converter with Voltage Detector
R1221N15AC-TR RICOH-R1221N15AC-TR Datasheet
218Kb / 21P
   Step-down DC/DC Converter with Voltage Detector
More results

Similar Description - R1224N102G

ManufacturerPart #DatasheetDescription
logo
RICOH electronics devic...
R1225N RICOH-R1225N Datasheet
263Kb / 31P
   PWM/VFM step-down DC/DC Converter
R1223N RICOH-R1223N Datasheet
207Kb / 19P
   PWM/VFM Step-down DC/DC Converter
R1230D RICOH-R1230D Datasheet
881Kb / 20P
   PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier
R1234D RICOH-R1234D Datasheet
915Kb / 26P
   PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier
logo
Richtek Technology Corp...
RT9261 RICHTEK-RT9261_07 Datasheet
153Kb / 12P
   VFM Step-Up DC/DC Converter
logo
ELM Technology Corporat...
ELM600-SERIES ELM-TECH-ELM600-SERIES Datasheet
1Mb / 7P
   PWM step down DC/DC converter
logo
RICOH electronics devic...
RH5RI301B RICOH-RH5RI301B Datasheet
179Kb / 24P
   VFM STEP-UP DC/DC CONVERTER?
logo
Richtek Technology Corp...
RT9261B RICHTEK-RT9261B_07 Datasheet
127Kb / 8P
   VFM Step-Up DC/DC Converter
RT9261 RICHTEK-RT9261 Datasheet
219Kb / 14P
   VFM Step-up DC/DC Converter
logo
RICOH electronics devic...
RH5RIXX1B RICOH-RH5RIXX1B Datasheet
178Kb / 24P
   VFM STEP-UP DC/DC CONVERTER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com