XCL211 datasheet(4/16 Pages) TOREX

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XCL211/XCL212 series

■

ELECTRICAL CHARACTERISTICS

XCL211B082DR/XCL212B082DR,

Ta=25℃

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNIT

CIRCUIT

FB Voltage

VFB

VIN=5.0V, VCE=5.0V

Voltage to start oscillation while

VFB=0.72V → 0.88V

0.784

0.800

0.816

③

Operating Voltage Range

VIN

When connected to external components

2.7

6.0

①

Maximum Output Current

IOUTMAX

VIN=VCE=5.0V (*1,*2)

When connected to external components

2.0

①

UVLO Voltage

VUVLO

VCE=5.0V, VFB=0.72V

Voltage which Lx pin holding “L” level (*3)

2.00

2.68

③

Quiescent Current

VIN=VCE=5.0V, VFB=0.88V

μA

②

Stand-by Current

ISTB

VIN=5.0V, VCE=0V, VFB=0.88V

0.01

1.00

μA

②

Oscillation Frequency

fOSC

VIN=VCE=5.0V, IOUT=300mA

When connected to external components

2040

2400

2760

kHz

①

PFM Switch Current (*4)

IPFM

VIN=VCE=6.0V, IOUT=1mA

When connected to external components

680

①

PFM Duty Limit (*4)

DTYLIMIT_PFM

VIN=VCE=2.7V, IOUT=1mA

When connected to external components

180

250

①

Maximum Duty Cycle

DMAX

VIN=VCE=5.0V, VFB=0.72V

100

③

Minimum Duty Cycle

DMIN

VIN=VCE=5.0V, VFB=0.88V

③

LXSW”H”ON Resistance

RLXH

VIN=VCE=4.0V, VFB=0.72V (*6)

0.11

0.21

Ω

④

LXSW”L”ON Resistance

RLXL

0.12

0.30 (*7)

Ω

LXSW”H” Leakage Current

ILeakH

VIN=5.0V, VCE=0V, VFB=0.88V, VLx=0V

0.01

1.00 (*8)

μA

⑤

Current Limit

ILIM

VIN=VCE=5.0V, VFB=0.72V (*9)

4.0

④

Output Voltage

Temperature

Characteristics

∆VOUT/

(∆topr・VOUT)

IOUT=100mA

-40℃≦Topr≦85℃

When connected to external components

±100

ppm/℃

①

CE ”H” Voltage

VCEH

VIN=5.0V, VFB=0.72V Applied voltage to VCE

Voltage changes Lx to “H” level

1.2

VIN

③

CE ”L” Voltage

VCEL

VIN=5.0V, VFB=0.72V Applied voltage to VCE

Voltage changes Lx to “L” level

GND

0.4

③

CE ”H” Current

ICEH

VIN=5.0V, VCE=5.0V, VFB=0V

-0.1

0.1

μA

⑤

CE ”L” Current

ICEL

VIN=5.0V, VCE=0V, VFB=0V

-0.1

0.1

μA

⑤

FB ”H” Current

IFBH

VIN=5.0V, VCE =0V, VFB=5.0V

-0.1

0.1

μA

⑤

FB ”L” Current

IFBL

VIN=5.0V, VCE=0V, VFB=0V

-0.1

0.1

μA

⑤

Soft-Start Time

tSS

VIN=5.0V, VCE=0V → 5.0V, IOUT=1mA

When connected to external components

0.3

1.0

2.0

①

Thermal Shutdown Temperature

TTSD

150

℃

Hysteresis Width

THYS

℃

CL Discharge Resistance

RDCHG

VIN=5.0V, VCE=0V, VFB=0.72V, VLx=1.0V

130

160

Ω

⑥

Inductance

Test Freq.=1.0MHz

1.5

μH

Inductor Rated Current

IDC

∆T=+40℃

2.3

External Components: CIN1=20

μF(ceramic), CIN2=1μF(ceramic), CL=20μF(ceramic), R1=15kΩ, R2=30kΩ, CFB=1000pF

Condition: Unless otherwise stated,”H”= VIN ~ VIN - 1.2V, “L”= + 0.1V ~ -0.1V

(*1) Mount conditions affect heat dissipation. Maximum output current is not guaranteed when TTSD starts to operate earlier.

(*2) 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.

(*3) These values include UVLO detect voltage, UVLO release voltage and hysteresis operating voltage range.

UVLO release voltage is defined as the VIN voltage which makes Lx pin “H”.

(*4) XCL211 series exclude IPFM and DTYLIMIT_PFM because those are only for the PFM control’s functions.

(*5) On resistance = (VIN – Lx pin measurement voltage) / 0.1A

(*6) Design value

(*7) When temperature is high, a current of approximately 20

μA (maximum) may leak.

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

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