MYRBP420080W21RD/E中文資料村田數據手冊PDF規(guī)格書

■GENERALDESCRIPTION

The MYRBP-W/B series is a synchronous step-up mini DC/DCconverter

which integrates an inductor and a control IC in one tiny package (2.0mm×2.5mm, h=1.0mm).

A stable step-up power supply is configured using only two capacitors connectedexternally.

An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the circuitwiring.

A wide operating voltage range of 0.65V to 6.0V enables support for applications that require an internally fixed output voltage (2.2V to 5.5V).

PWM control (MYRBP-W) or automatic PWM/PFM switching control (MYRBP-B) can beselected.

Duringthedevicesenterstand-bymode,MYRBP-WD/BDtypespreventtheapplicationmalfunctionbyCLDischargeFunctionwhichcanquicklydischargetheelectricchargeattheoutputcapacitor(CL).MYRBP-W/BtypesisabletodriveRealTimeClocketc.

■FEATURES

Input VoltageRange

: operating hold voltage 0.65V ~6.0V

:Start-upvoltage0.9V ~6.0V

Fixed OutputVoltage

: 2.2V ~ 5.5V (0.1Vincrements)

OscillationFrequency

: 3.0MHz(±20%)

InputCurrent

:0.8A

Output Current

: 500mA @VOUT=5.0V, VBAT=3.3V (TYP.) 350mA @VOUT=3.3V, VBAT =1.8V(TYP.)

Control ModeSelection

Load TransientResponse

: PWM (MYRBP-W Series)or

Auto PWM/PFM (MYRBP-BSeries)

:100mV@VOUT=3.3V,VBAT=1.8V

,IOUT=1mA→200mA

ProtectionCircuits

: Over-current limit (Integral latch method) Output short-circuitprotection

Functions

:Soft-start

Load Disconnection Function (Dtype)

CL Auto Discharge Function (D type) Bypass Switch Function (E type)

Output Capacitor

: CeramicCapacitor

OperatingAmbientTemperature

: -40℃ ~ +85℃

EnvironmentallyFriendly

: EU RoHS Compliant, Pb Free

HalogenFree

■APPLICATIONS

●Portableequipment

●Beauty & healthequipment

●Wearabledevices

●Game &Hobby

●PCPeripherals

●Devices with 1~3Alkaline,

1~3 Nickel Hydride, 1 Lithium and 1Li-ion