Micro Dc/Dc

XDL601/02 5.5V 1.5A Step-Down Micro Dc/Dc

Vin Max.

5.5V

SEriES XDL601 XDL602

Output Current 1.5A

ONResistance

N-Ch 0.10Ω (typ)

P-Ch 0.14Ω (typ)

Input Voltage Range 2.5V ~ 5.5V

Output Voltage Range 0.8V ~ 3.3V

Switching Frequency 3.0MHz

Quiescent Current (typ.) 400µA 25µA

Control Method

Hi-SAT COT

Fixed PWMControl

PWM/PFMAuto-switching

Max Duty Cycle 100%

Protection CircuitsCurrent Limit Circuit, Short Circuit Protection,

UVLO (2.0V), Thermal Shutdown

Additional FeaturesIntegral Soft-start

Optional CL Discharge

Op. Amb. Temperature -40ºC ~ +105ºC

Package DFN3625-11A (Wettable Flank)

0102030405060708090

100

0.1 1 10 100 10000 1000

Effi

cien

cy: E

FFI (

%)

Output Current : IOUT (mA)

VIN=5.0V, CIN =10µF(C2012X7R1A106M) CL =10µF(C2012X7R1A106M)

XDL601A333 / XDL602A333

XDL601 XDL602

0102030405060708090

100

0.1 1 10 100 10000 1000

Rip

ple

Vol

tage

: Vr(

mV

)

Output Current : IOUT (mA)

VIN=5.0V, CIN =10µF(C2012X7R1A106M) CL =10µF(C2012X7R1A106M)

XDL601A333 / XDL602A333

XDL601 XDL602

1.01.52.02.53.03.54.04.55.05.56.0

0 250 500 750 150012501000

Osc

illat

ion

Freq

uenc

y: f O

SC (M

Hz)

Output Current : IOUT (mA)

XDL601A333

VIN = 5.5VVIN = 5.0VVIN = 4.2V

3.00

3.10

3.20

3.30

3.40

3.50

3.60

0.1 1 10 100 10000 1000

Out

put V

olta

ge: V

OU

T (V

)

Output Current : IOUT (mA)

VIN=5.0V, CIN =10µF(C2012X7R1A106M) CL =10µF(C2012X7R1A106M)

XDL601A333

CIN

VINVIN

CEVOUT

L2

L1 Lx

AGND PGND

CL

VOUT

EfficiEncy VS. output currEnt output rippLE VS. output currEnt

StAbLE oSciLLAtion frEquEncy SupErior LoAD rEguLAtiontypicAL AppLicAtion circuit

Time [100µ s./div]

Out

put V

olta

ge: V

OU

T [V

]

Out

put C

urre

nt: I

OU

T [A

]

1.60

1.65

1.70

1.75

1.80

1.85

1.90

0

0.5

1.0

1.5

2.0

2.5

3.0

Out

put V

olta

ge: V

OU

T [V

]

Out

put C

urre

nt: I

OU

T [A

]

1.60

1.65

1.70

1.75

1.80

1.85

1.90

0

0.5

1.0

1.5

2.0

2.5

3.0

Time [100µ s./div]

VIN = 3.6, VOUT = 1.8V, TRISE = TFALL = 2µs, Ta = 25ºCXDL601A18362-Q : CIN = CL = 10µF, XC9235A18DMR : CIN = 4.7µF, CL = 10µF

VOUT (XDL601)VOUT (XC9235)IOUT

fASt trAnSiEnt rESponSE

AEc-q100grade 2

TA(max): 105°C

zintegrated coil Structure•Morethan50%ofPCBAreaSavings•MinimisedRadiatedNoise(EMI)

zHigh Efficiency at 3.0MHz operation•93%(atVIN=5.0V, VOUT=3.3V/500mA)

zEnhanced cot technology•FastTransientResponse•StableFrequencyOperation•SuperiorLoadRegulation

zHigh reliability•WettableFlanksPackage•HighThermalPerformance

fast transient response without the weaknesses of the conventional cot technology

Stable oscillation frequency Superior Load regulation

Dfn3625-11A

inductor

Dc/Dc chip

2.5mm

3.6mm

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