Datasheet > RP500N331A-TR

RP500N331A-TR

更新时间： 2024-11-08 04:51:27

品牌	Logo	应用领域
理光 - RICOH		光电二极管
页数	文件大小	规格书
22页	472K
描述
Switching Regulator, 0.9A, 1440kHz Switching Freq-Max, CMOS, PDSO6, SOT-23, 6 PIN

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RP500N331A-TR 数据手册

RP500x SERIES

step-down DC/DC Converters with synchronous rectifier

NO.EA-155-080522

OUTLINE

The RP500X Series are CMOS-based step-down DC/DC Converters with synchronous rectifier.

Each of these ICs consists of an oscillator, a switching control circuit, a reference voltage unit, an error

amplifier, a soft-start circuit, protection circuits, UVLO circuit, switching transistors, and so on. A low ripple, high

efficiency step-down DC/DC converter can be easily composed of this IC with only an inductor and capacitors. In

terms of the output voltage, since the feedback resistances are built-in, the voltage is fixed internally.

50mV(custom-made) step output can be set by laser-trim and 1.5% or 24mV tolerance depending on the output

voltage is guaranteed.

Mode alternative circuit works automatically for improving the efficiency. Considering fixed noise frequency,

PWM fixed control type is also available. As protection circuits, the current limit circuit which limits peak current

of Lx at each clock cycle, and the latch type protection circuit which works if the term of the over-current

condition keeps on a certain time exist. The latch-type protection circuit works to latch an internal driver with

keeping it disable. To release the condition of the protection, after disabling this IC with a chip enable circuit,

enable it again, or restart this IC with power-on or make the supply voltage at UVLO detector threshold level or

lower than UVLO.

Since packages are DFN(PLP)1820-6, SOT23-6, WLCSP-6 (0.16φ), high density mounting on boards is

possible.

FEATURES

zꢀInput Voltage Range.............................................. 2.55V to 5.50V

zꢀOutput Voltage....................................................... 1.1V to 3.3V

(It is possible in the range from1.1V to 3.3V with a step 0.1V)

zꢀHigh Accuracy Output Voltage .............................. ±1.5% (Vout≥1.6V)

±24mV (Vout<1.6V)

zꢀSupply Current......................................................... Typ.400µA(at PWM mode)

Typ.100µA(at PFM mode)

zꢀOscillator Frequency ............................................. Typ. 1.2MHz

zꢀBuilt-in Soft start Function ..................................... Typ.0.1ms

zꢀBuilt-in Latch type Protection ................................ Typ.1.5ms

zꢀBuilt-in UVLO Function.......................................... Typ. 2.2V

zꢀTwo choices of Switching Mode............................ Automatic PWM/PFM mode change / PWM fixed

zꢀPackages............................................................... DFN(PLP)1820-6, SOT23-6W, WLCSP-6 (0.16φ)

APPLICATIONS

zꢀPower source for portable equipment such as cellular, PDA, DSC, Notebook PC

zꢀPower source for HDD

zꢀPower source for Li-ion battery-used equipment

12 3 4 5 6 7...22

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与RP500N331A-TR相关器件

型号	品牌	获取价格	描述	数据表
RP500N331A-TR-FE	RICOH	获取价格	Switching Regulator, 1440kHz Switching Freq-Max, CMOS, PDSO6, HALOGEN FREE AND ROHS COMPLI
RP500N334A-TR	RICOH	获取价格	Switching Regulator, 0.9A, 1440kHz Switching Freq-Max, CMOS, PDSO6, SOT-23, 6 PIN
RP500X	RICOH	获取价格	The RP500X Series are CMOS-based step-down DC/DC Converters with synchronous rectifier.
RP500Z112A-E2	RICOH	获取价格	Switching Regulator, 0.9A, 1440kHz Switching Freq-Max, CMOS, PBGA6, WLCSP-6
RP500Z113A-E2-F	RICOH	获取价格	Switching Regulator, Current-mode, 0.9A, 1440kHz Switching Freq-Max, CMOS, PBGA6, HALOGEN
RP500Z121A-E2	RICOH	获取价格	Switching Regulator, 0.9A, 1440kHz Switching Freq-Max, CMOS, PBGA6, WLCSP-6
RP500Z121A-E2-F	RICOH	获取价格	Switching Regulator, Current-mode, 0.9A, 1440kHz Switching Freq-Max, CMOS, PBGA6, HALOGEN
RP500Z122A-E2	RICOH	获取价格	Switching Regulator, 0.9A, 1440kHz Switching Freq-Max, CMOS, PBGA6, WLCSP-6
RP500Z122A-E2-F	RICOH	获取价格	Switching Regulator, Current-mode, 0.9A, 1440kHz Switching Freq-Max, CMOS, PBGA6, HALOGEN
RP500Z124A-E2-F	RICOH	获取价格	Switching Regulator, Current-mode, 0.9A, 1440kHz Switching Freq-Max, CMOS, PBGA6, HALOGEN

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