XCL201 datasheet(4/21 Pages) TOREX

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XCL201/XCL202 Series

■

ELECTRICAL CHARACTERISTICS

XCL201B121BR/XCL202B121BR, VOUT=1.2V, fOSC=1.2MHz, Ta=25℃

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS CIRCUIT

Output Voltage

VOUT

When connected to external components,

VIN=VCE=5.0V, IOUT=30mA

1.176

1.200

1.224

①

Operating Voltage Range

VIN

2.0

6.0

①

Maximum Output Current

IOUTMAX

VIN=VOUT(T)+2.0V, VCE=1.0V

When connected to external components

(*8)

400

①

UVLO Voltage

VUVLO

VCE=VIN,VOUT=0V

Voltage which Lx pin holding “L” level

(*1, *10)

1.00

1.40

1.78

②

Supply Current (XCL201)

Supply Current (XCL202)

IDD

VIN=VCE=5.0V, VOUT=VOUT(T)×1.1V

②

Stand-by Current

ISTB

VIN=5.0V, VCE=0V, VOUT= VOUT(T)×1.1V

1.0

③

Oscillation Frequency

fOSC

When connected to external components,

VIN=VOUT(T)+2.0V, VCE=1.0V , IOUT=100mA

1020

1200

1380

kHz

①

PFM Switching Current

(*11)

IPFM

When connected to external components,

VIN=VOUT(T)+2.0V, VCE=VIN , IOUT=1mA

140

180

240

⑩

PFM Duty Limit

(*11)

DTYLIMIT_PFM

VCE=VIN = 2.0V, IOUT=1mA

200

300

①

Maximum Duty Cycle

MAXDTY

VIN=VCE=5.0V, VOUT=VOUT (T)×0.9V

100

③

Minimum Duty Cycle

MINDTY

VIN=VCE=5.0V, VOUT=VOUT (T)×1.1V

③

Efficiency

(*2)

EFFI

When connected to external components,

VCE=VIN=VOUT (T)+1.2V, IOUT=100mA

①

Lx SW "H" ON Resistance 1

ｘH1

VIN=VCE=5.0V, VOUT=0V,ILX=100mA

(*3)

0.35

0.55

Ω

④

Lx SW "H" ON Resistance 2

ｘH2

VIN=VCE=3.6V, VOUT=0V,ILX=100mA

(*3)

0.42

0.67

Ω

④

Lx SW "L" ON Resistance 1

ｘL1

VIN=VCE=5.0V

(*4)

0.45

0.66

Ω

Lx SW "L" ON Resistance 2

ｘL2

VIN=VCE=3.6V

(*4)

0.52

0.77

Ω

Lx SW "H" Leakage Current

(*5)

ILeakH

VIN=VOUT=5.0V, VCE=0V, LX=0V

0.01

1.0

⑨

Current Limit

(*9)

ILIM

VIN=VCE=5.0V, VOUT=VOUT (T)×0.9V

(*7)

700

800

1000

⑥

Output Voltage

Temperature Characteristics

△VOUT/

(VOUT・△Topr)

IOUT=30mA

-40℃≦Topr≦85℃

±100

ppm/ ℃

①

CE "H" Voltage

VCEH

VOUT=0V, Applied voltage to VCE,

Voltage changes Lx to “H” level

(*10)

0.65

6.0

③

CE "L" Voltage

VCEL

VOUT=0V, Applied voltage to VCE,

Voltage changes Lx to “L” level

(*10)

VSS

0.25

③

CE "H" Current

ICEH

VIN=VCE=5.0V, VOUT=0V

- 0.1

0.1

⑤

CE "L" Current

ICEL

VIN=5.0V, VCE=0V, VOUT=0V

- 0.1

0.1

⑤

Soft Start Time

tSS

When connected to external components,

VCE=0V→VIN , IOUT=1mA

0.25

0.40

①

Latch Time

tLAT

VIN=VCE=5.0V, VOUT=0.8×VOUT(T)

Short Lx at 1Ω resistance

(*6)

1.0

⑦

Short Protection

Threshold Voltage

VSHORT

Sweeping VOUT, VIN=VCE=5.0V, Short Lx at

1Ω resistance, VOUT voltage which Lx becomes “L”

level within 1ms

0.450

0.600

0.750

⑦

CL Discharge

RDCHG

VIN=5.0V, LX=5.0V, VCE=0V, VOUT=open

200

300

450

Ω

⑧

Inductance Value

Test frequency=1MHz

4.7

H-

Allowed Inductor Current

IDC

ΔT=40℃

600

Test conditions: Unless otherwise stated, VIN=5.0V, VOUT(T)=Nominal Voltage

NOTE:

(*1) Including hysteresis operating voltage range.

(*2) EFFI= { ( output voltage×output current ) / ( input voltage×input current) }×100

(*3) ON resistance (Ω)=(VIN - Lx pin measurement voltage) / 100mA

(*4) Design value

(*5) When temperature is high, a current of approximately 10μA (maximum) may leak.

(*6) Time until it short-circuits VOUT with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.

(*7) When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

(*8) When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.

If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.

(*9) Current limit denotes the level of detection at peak of coil current.

(*10) “H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V

(*11) IPFM and DTYLIMIT_PFM are defined only for the XCL202 series which have PFM control function. (Not for the XCL201 series)

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