產(chǎn)品介紹：

R1210NXX2C/XX2D系列為PWM升壓DC/DC變換器控制器，精度高，CMOS工藝低電流。

R1210NXX2X系列的每一個(gè)都由振蕩器、PWM電路、參考電壓單元、誤差放大器、相位補(bǔ)償電路、電壓檢測(cè)電阻、芯片使能電路、抗劇烈負(fù)載暫態(tài)控制器和輸出電壓檢測(cè)器組成。一個(gè)低紋波，高效率的升壓DC/DC變換器可以由這種集成電路組成，只需要四個(gè)外部組件，或一個(gè)電感，一個(gè)二極管，一個(gè)晶體管和一個(gè)電容。

R1210NXX2X系列可通過電路控制器檢測(cè)輸出電壓的急劇變化，提高了負(fù)載的瞬態(tài)響應(yīng)。

每個(gè)R1210NXX2X系列都有一個(gè)驅(qū)動(dòng)引腳，或外部晶體管的“EXT”引腳。通過將一個(gè)低通電阻的功率電阻電阻電阻連接到EXT'引腳，大電流通過電感，從而可以提供大輸出電流。

內(nèi)置芯片使能電路，以超低靜電流實(shí)現(xiàn)待機(jī)。

由于這些集成電路的封裝是小型SOT-23-5，因此可以在板上高密度安裝集成電路。

產(chǎn)品特性：

外部組件……

只有電感、二極管、電容和晶體管

當(dāng)前……TYP備用。OuA

低的輸出電壓溫度漂移系數(shù)....TYP.±100ppm/C

輸出電壓 ...........在2.2V到6.0 v范圍內(nèi)，步長0.1V進(jìn)行逐級(jí)設(shè)置

兩種基本振蕩器頻率......的選擇100千赫(XX2C), 180千赫(XX2D)

小包裝……OT-23-5 (Mini-mold)

低波紋，低噪聲

振蕩器的啟動(dòng)電壓 .....................MAX.0.8v

應(yīng)用程序

電池供電設(shè)備的電源。

便攜式通訊設(shè)備，照相機(jī)，錄像機(jī)的電源

要求電壓高于電池電壓的電器的電源。

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R1210N221A，R1210N231A，R1210N241A，R1210N251A，R1210N261A，R1210N271A，R1210N281A，R1210N291A，R1210N301A，R1210N311A，R1210N321A，R1210N331A，R1210N341A，R1210N351A，R1210N221C，R1210N231C，R1210N241C，R1210N251C，R1210N261C，R1210N271C，R1210N281C，R1210N291C，R1210N301C，R1210N311C，R1210N321C，R1210N331C，R1210N341C，R1210N351C，R1210N361C，R1210N371C，R1210N381C，R1210N391C，R1210N401C，R1210N411C，R1210N421C，R1210N431C，R1210N441C，R1210N451C，R1210N461C，R1210N471C，R1210N481C，R1210N491C，R1210N501C，R1210N511C，R1210N521C，R1210N531C，R1210N541C，R1210N551C，R1210N561C，R1210N571C，R1210N581C，R1210N591C，R1210N601C，R1210N221D，R1210N231D，R1210N241D，R1210N251D，R1210N261D，R1210N271D，R1210N281D，R1210N291D，R1210N301D，R1210N311D，R1210N321D，R1210N331D，R1210N341D，R1210N351D，R1210N361D，R1210N371D，R1210N381D，R1210N391D，R1210N401D，R1210N411D，R1210N421D，R1210N431D，R1210N441D，R1210N451D，R1210N461D，R1210N471D，R1210N481D，R1210N491D，R1210N501D，R1210N511D，R1210N521D，R1210N531D，R1210N541D，R1210N551D，R1210N561D，R1210N571D，R1210N581D，R1210N591D，R1210N601D，R1210N222C，R1210N232C，R1210N242C，R1210N252C，R1210N262C，R1210N272C，R1210N282C，R1210N292C，R1210N302C，R1210N312C，R1210N322C，R1210N332C，R1210N342C，R1210N352C，R1210N362C，R1210N372C，R1210N382C，R1210N392C，R1210N402C，R1210N412C，R1210N422C，R1210N432C，R1210N442C，R1210N452C，R1210N462C，R1210N472C，R1210N482C，R1210N492C，R1210N502C，R1210N512C，R1210N522C，R1210N532C，R1210N542C，R1210N552C，R1210N562C，R1210N572C，R1210N582C，R1210N592C，R1210N602C，R1210N222D，R1210N232D，R1210N242D，R1210N252D，R1210N262D，R1210N272D，R1210N282D，R1210N292D，R1210N302D，R1210N312D，R1210N322D，R1210N332D，R1210N342D，R1210N352D，R1210N362D，R1210N372D，R1210N382D，R1210N392D，R1210N402D，R1210N412D，R1210N422D，R1210N432D，R1210N442D，R1210N452D，R1210N462D，R1210N472D，R1210N482D，R1210N492D，R1210N502D，R1210N512D，R1210N522D，R1210N532D，R1210N542D，R1210N552D，R1210N562D，R1210N572D，R1210N582D，R1210N592D，R1210N602D

OUTLINE

The R1210NXX2C/XX2D Series are PWM step-up DC/DC Converter controllers, with high accuracy, low supplycurrent by CMOS process.

Each of the R1210NXX2X Series consists of an oscillator, a PWM circuit, a reference voltage unit, an error ampli-fier, phase compensation circuit, resistors for voltage detection, a chip enable circuit, a controller against drastic loadtransient and an output voltage detector. A low ripple, high efficiency step-up DC/DC converter can be composed ofthis IC with only four external components, or an inductor, a diode, a transistor and a capacitor.

The R1210NXX2X Series can detect drastic change of output voltage with a circuit controller, the load transient re-sponse is improved.

Each of the R1210NXX2X Series has a driver pin, or 'EXT' pin for external transistor. By connecting a power ran-sistor with low ON-resistance to EXT' pin, a large current flows through an inductor thus, large output current can besupplied.

The built-in chip enable circuit can make the standby mode with ultra low quiescent current.

Since the package for these ICs is small SOT-23-5, high density mounting of the ICs on board is possible.

FEATURES

External Components ...…

Only an inductor, a diode, a capacitor, and a transistor

Standby Current .......TYP. OuA

Low 'Temperature-Drift Coefficient of Output Voltage....TYP.±100ppm/C

Output Voltage ...........Stepwise Setting with a step of 0.1V in the range of 2.2V to6.0V

Two choices of Basic Oscillator Frequency......100kHz (XX2C),180kHz(XX2D)

Small Package.......OT-23-5(Mini-mold)

Low Ripple, Low Noise

Oscillator Start-up Voltage..................... MAX.0.8v

APPLICATIONS

Power source for battery-powered equipment.

Power source for portable communication appliances, cameras,VCRs

Power source for appliances which require higher voltage than battery voltage.