Datasheet > RN5RK371A-TL-F

RN5RK371A-TL-F

更新时间： 2024-11-19 18:53:31

品牌	Logo	应用领域
理光 - RICOH		/
页数	文件大小	规格书
23页	380K
描述
Switching Regulator/Controller

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RN5RK371A-TL-F 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	,	Reach Compliance Code：	unknown
风险等级：	5.77	湿度敏感等级：	1
Base Number Matches：	1

RN5RK371A-TL-F 数据手册

RN5RK SERIES

VFM STEP-UP DC/DC CONVERTER

OUTLINE

NO.EA-045-0602

The RN5RKxx1A/xx1B/xx2A Series are CMOS-based VFM (Chopper) Step-up DC/DC converter ICs with ultra

low supply current and high output voltage accuracy.

Each of the RN5RKxx1A/xx1B consists of an oscillator, a VFM control circuit, a driver transistor to have low

ON resistance (Lx switch), a reference voltage unit, a high speed comparator, resistors for voltage detection, an

Lx switch protection circuit and an internal chip enable circuit. A low ripple, high efficiency step-up DC/DC

converter can be composed of this RN5RKxx1A/xx1B with only three external components: an inductor, a diode

and a capacitor.

The RN5RKxx2A uses the same chip as what is employed in the RN5RKxx1A/1B IC and has a drive pin (EXT)

for an external transistor instead of an Lx pin. As it is possible to load a large output current with a power

transistor which has a low saturation voltage, RN5RKxx2A IC is recommendable to users who need an output

current as large as between several tens mA and several hundreds mA.

Using the chip enable function, it is possible to make the supply current on standby minimized.

Since the package for these ICs is SOT-23-5 (Mini-mold), high density mounting of the ICs on board is

possible.

FEATURES

• Small Number of External Components .............................. Only an inductor, a diode and a capacitor

(RN5RKxx1A/xx1B)

• Standby Current................................................................... Typ. 0µA

• High Output Voltage Accuracy .............................................±2.5%

• Low Ripple and Low Noise

• Low Start-up Voltage............................................................Max.0.9V

• High Efficiency .....................................................................Typ. 80%

• Including a Driver Transistor with Low ON Resistance........Only RN5RKxx1A/xx1B

• Two Kinds of Duty Ratio.......................................................77% (xx1A, xx2A)/ 55% (xx1B)

•

Output Voltage Range.......................................................... 2.0V to 5.5V

• Low Temperature-Drift Coefficient of Output Voltage........... Typ. ±100ppm/°C

• Small Packages ................................................................. SOT-23-5 (Mini-Mold)

APPLICATIONS

• Power source for battery-powered equipment.

• Power source for cameras, camcorders, VCRs, and hand-held communication equipment.

• Power source for those appliances which require higher cell voltage than that of batteries.

12 3 4 5 6 7...23

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与RN5RK371A-TL-F相关器件

型号	品牌	获取价格	描述	数据表
RN5RK371A-TL-FB	RICOH	获取价格	Switching Regulator, Voltage-mode, 0.5A, 120kHz Switching Freq-Max, CMOS, PDSO5, MINI-MOLD
RN5RK371A-TR	RICOH	获取价格	SOT-23-5 VFM STEP-UP DC/DC CONVERTER
RN5RK371A-TR-EF	RICOH	获取价格	Switching Regulator,
RN5RK371B	ETC	获取价格	Voltage-Mode SMPS Controller
RN5RK371B-TL	RICOH	获取价格	SOT-23-5 VFM STEP-UP DC/DC CONVERTER
RN5RK371B-TL-F	RICOH	获取价格	Switching Regulator/Controller
RN5RK371B-TR	RICOH	获取价格	SOT-23-5 VFM STEP-UP DC/DC CONVERTER
RN5RK371B-TR-F	RICOH	获取价格	Switching Regulator, 100kHz Switching Freq-Max, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN
RN5RK371B-TR-FE	RICOH	获取价格	Switching Regulator/Controller,
RN5RK372A	ETC	获取价格	Voltage-Mode SMPS Controller

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