TS51221 datasheet(4/18 Pages) SEMTECH

tên linh kiện	TS51221

Giải thích chi tiết về linh kiện	High Efficiency Regulator IC for Wireless Power Receiver Applications

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TS51221

Final Datasheet

Rev 1.1

April 6, 2015

www.semtech.com

4 of 18

Semtech

Thermal Characteristics

Symbol

Parameter

Value

Units

ΘJA

ThermalResistanceJunctiontoAir(Note1)

34.5

°C/W

ΘJC

ThermalResistanceJunctiontoCase(Note1)

2.5

°C/W

TSTG

StorageTemperatureRange

-65to150

°C

TJMAX

MaximumJunctionTemperature

150

°C

OperatingJunctionTemperatureRange

-40to125

°C

Note 1: Assumes 16LD 3x3 QFN with hi-K JEDEC board and 13.5 inch2 of 1 oz Cu and 4 thermal vias connected to PAD

Recommended Operating Conditions

Symbol

Parameter

Min

Typ

Max

Unit

InputOperatingVoltage

4.5

CBST

BootstrapCapacitor

17.6

26.4

LOUT

OutputFilterInductorTypicalValue(Note1)

3.76

4.7

5.64

COUT

OutputFilterCapacitorTypicalValue(Note2)

44(2x22)

COUT-ESR

OutputFilterCapacitorESR

100

mΩ

CBYPASS

InputSupplyBypassCapacitorTypicalValue(Note3)

Note 1: For best performance, an inductor with a saturation current rating higher than the maximum V

OUT load requirement plus the inductor

current ripple.

Note 2: For best performance, a low ESR ceramic capacitor should be used.

Note 3: For best performance, a low ESR ceramic capacitor should be used. If C

BYPASS is not a low ESR ceramic capacitor, a 0.1uF ceramic

capacitor should be added in parallel to CBYPASS.

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