Datasheet > RP500N312A-TR-FE

RP500N312A-TR-FE

更新时间： 2024-11-07 17:09:35

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RP500N312A-TR-FE 数据手册

RP500x SERIES

600mA^∗Step-down DC/DC Converter with Synchronous Rectifier

NO.EA-155-100802

OUTLINE

The RP500x Series are CMOS-based 600mA^∗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. 0.1V

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 WLCSP-6-P2, DFN1616-6, DFN(PLP)1820-6, SOT-23-6W, high density mounting on

boards is possible.

∗)This is an approximate value, because output current depends on conditions and external parts.

FEATURES

• Supply Current......................................................Typ. 400μA (at PWM mode)

Typ. 100μA (at VFM mode)

• Standby Current....................................................Max. 5μA

• Input Voltage Range .............................................2.55V to 5.50V

• Output Voltage Range...........................................1.1V to 3.3V (0.1V steps)

(For other voltages, please refer to MARK INFORMATIONS.)

• Output Voltage Accuracy.......................................±1.5% (VOUT≥1.6V), ±24mV (VOUT<1.6V)

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

• Oscillator Frequency.............................................Typ. 1.2MHz

• Oscillator Maximum Duty Cycle............................Min. 100%

• Built-in Driver ON Resistance ...............................Typ. Pch. 0.3Ω, Nch. 0.38Ω (V^IN=3.6V)

• UVLO Detector Threshold.....................................Typ. 2.2V

• Soft Start Time.......................................................Typ. 120μs

• Lx Current Limit.....................................................Typ. 900mA

• Latch type Protection Circuit.................................Typ. 1.5ms

• Two choices of Switching Mode............................Automatic PWM/VFM mode change / PWM fixed

• Packages ..............................................................WLCSP-6-P2, DFN1616-6, DFN(PLP)1820-6, SOT-23-6W

APPLICATIONS

• Power source for battery-powered equipment.

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

• Power source for HDD, portable equipment.

12 3 4 5 6 7...25

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与RP500N312A-TR-FE相关器件

型号	品牌	获取价格	描述	数据表
RP500N313A-TR-F	RICOH	获取价格	Switching Regulator, Current-mode, 0.9A, 1440kHz Switching Freq-Max, CMOS, PDSO6, LEAD FRE
RP500N314A-TR-F	RICOH	获取价格	Switching Regulator, Current-mode, 0.9A, 1440kHz Switching Freq-Max, CMOS, PDSO6, LEAD FRE
RP500N322A-TR	RICOH	获取价格	Switching Regulator, 0.9A, 1440kHz Switching Freq-Max, CMOS, PDSO6, SOT-23, 6 PIN
RP500N331A-TR	RICOH	获取价格	Switching Regulator, 0.9A, 1440kHz Switching Freq-Max, CMOS, PDSO6, SOT-23, 6 PIN
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

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