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R1224N152M Datasheet (PDF) - RICOH electronics devices division

R1224N152M Datasheet PDF - RICOH electronics devices division
Part # R1224N152M
Download  R1224N152M Download

File Size   1494.66 Kbytes
Page   42 Pages
Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division
Description PWM/VFM step-down DC/DC Converter

R1224N152M Datasheet (PDF)

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R1224N152M Datasheet PDF - RICOH electronics devices division

Part # R1224N152M
Download  R1224N152M Click to download

File Size   1494.66 Kbytes
Page   42 Pages
Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division
Description PWM/VFM step-down DC/DC Converter

R1224N152M Datasheet (HTML) - RICOH electronics devices division

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R1224N152M Product details

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).

FEATURES
• Supply Current .............................................Typ. 20µA (R1224Nxx2E/F/M/L, R1224N102M)
                                                                        Typ. 30µA (R1224Nxx2G, R1224N102G)
                                                                        Typ. 40µA (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.




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