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

ON Resistance

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 PWM Control

PWM/PFM Auto-switching

Max Duty Cycle 100%

Protection Circuits Current Limit Circuit, Short Circuit Protection,

UVLO (2.0V), Thermal Shutdown

Additional Features Integral Soft-start

Optional CL Discharge

Op. Amb. Temperature -40ºC ~ +105ºC

Package DFN3625-11A (Wettable Flank)

0 10 20 30 40 50 60 70 80 90

100

0.1 1 10 100 10000 1000

E ffi

ci en

cy : E

FF I (

% )

Output Current : IOUT (mA)

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

XDL601A333 / XDL602A333

XDL601 XDL602

0 10 20 30 40 50 60 70 80 90

100

0.1 1 10 100 10000 1000

R ip

pl e

V ol

ta ge

: V r(

m V

)

Output Current : IOUT (mA)

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

XDL601A333 / XDL602A333

XDL601 XDL602

1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

0 250 500 750 150012501000

O sc

ill at

io n

Fr eq

ue nc

y: f O

S C (M

H z)

Output Current : IOUT (mA)

XDL601A333

VIN = 5.5V VIN = 5.0V VIN = 4.2V

3.00

3.10

3.20

3.30

3.40

3.50

3.60

0.1 1 10 100 10000 1000

O ut

pu t V

ol ta

ge : V

O U

T ( V

)

Output Current : IOUT (mA)

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

XDL601A333

CIN

VIN VIN

CEVOUT

L2

L1 Lx

AGND PGND

CL

VOUT

EfficiEncy VS. output currEnt output rippLE VS. output currEnt

StAbLE oSciLLAtion frEquEncy SupErior LoAD rEguLAtion typicAL AppLicAtion circuit

Time [100µ s./div]

O ut

pu t V

ol ta

ge : V

O U

T [ V

]

O ut

pu t C

ur re

nt : I

O U

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

O ut

pu t V

ol ta

ge : V

O U

T [ V

]

O ut

pu t C

ur re

nt : I

O U

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 = 25ºC XDL601A18362-Q : CIN = CL = 10µF, XC9235A18DMR : CIN = 4.7µF, CL = 10µF

VOUT (XDL601) VOUT (XC9235) IOUT

fASt trAnSiEnt rESponSE

AEc-q100 grade 2

TA(max): 105°C

z integrated coil Structure • More than 50% of PCB Area Savings • Minimised Radiated Noise (EMI)

z High Efficiency at 3.0MHz operation • 93% (at VIN=5.0V, VOUT=3.3V/500mA)

z Enhanced cot technology • Fast Transient Response • Stable Frequency Operation • Superior Load Regulation

z High reliability • Wettable Flanks Package • High Thermal Performance

fast transient response without the weaknesses of the conventional cot technology

Stable oscillation frequency Superior Load regulation

Dfn3625-11A

inductor

Dc/Dc chip

2.5 mm

3.6mm

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